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Our Products

E308L
E309L Mo
E316
E316L
E347
E310
E2209-17
E2553-16
E2594-17
E2595-17
E410
E320LR
E254
E630

GENERAL CHARACTERISTICS :

Lime – titania all position electrodes.
Exhibits smooth running.
Soft & stable arc with ease of striking and with negligible spatter.
Self-peeling slag.
Smooth bead appearance with fine ripples.
Weldable on AC and DC+ polarity.
Austenitic weld deposit which contains appropriate quantity of “FERRITE” to prevent cracking.
High degree of corrosion resistance in oxidizing environments such as nitric acid.
High resistance to intergranular corrosion.

CHEMICAL ANALYSIS OF ALL WELDS DEPOSIT (%) :

C	Mn	Si	Cr	Ni	S	P
0.040 max	0.05-2.5	0.90 max	18.0-21.0	9.0-11.0	0.03 max	0.040 max

ALL WELD MECHANICAL PROPERTIES :

Ultimate Tensile Strength (kg/mm2)	Elongation (L = 4d) %	CVN Impact Value Joules at +20oC
56-66	36-45	56-80

STEEL TO BE WELDED :

Steel Grades	BS970	DIN 17440	W.Nt	AFNOR NFA35-573/ 574/576	ASTM/ACI A240/A312	SIS	UNS
Extra low carbon	304S12	X2CrNi 19 11	1.4306	Z2CN 18.10	304 L	2352	S30403
C 0.03% max		X2CrNi 18 10	1.4311	Z2CN 18.10 a “I” azote	TP304L CF-3		S30403
Medium carbon	304S15	X12CrNi 18 8	1.4300	Z10CN 18.09	302, 304	2333	S30400
	304S15	X5CrNi 18 10	1.4301	Z6CN 18.09	TP304H, TP 304	S30409 CF-B
Ti, No stabilized	321S12	X6CiNiTi 18 10	1.4541	Z6CNT 18.10	321, TP321	2337	S32100
	347S17	X5CrNiNb 18 9	1.4543	Z6CNNb 18.10	347,TP347	2338	S34700
	347S17	X6CrNiNb 18 10	1.4550		CF-8c, CPF-8c	S34709
		GxCrNiNb 18 19

WELDING CURRENT RANGES & PACKING DATA FOR SIZES MANUFACTURED :

Dia (mm)	2.5	3.15	4.00	5.00
Length (mm)	350	350	350	350
Current (amp) (AC or DC+)	50-85	70-115	85-145	135-180
Pieces per Carton	125	90	60	35

NOTE ON USAGE :

Ensure that electrodes are dry enough. In case of moisture pick-up redry the electrodes at 250oC for 30 to 60 minutes. Thereafter, either allow the oven to cool slowly to about 60oc or transfer them to a holding oven maintained at 50oC-60oC.
Clean the joint faces to remove moisture, grease or any foreign matter.
Employ welding currents within the prescribed range.
Keep the arc as short as possible.
Restrict weaving of electrode to within two and a half times the core wire diameter.
Use stainless steel wire brush for cleaning the weld beads.

GENERAL CHARACTERISTICS :

Lime titania all position electrode.
Negligible spatter; easy slag release; smooth bead appearance.
High quality weld deposit with defect-free radiographic performance in multipass welds.
High resistance to corrosion.
For joining stainless steel to carbon steel and to low alloy steels.
For root passes in clad steel.
Operates on AC and DC(+).
For barrier layer on 410 grade steel.

CHEMICAL ANALYSIS OF ALL WELDS DEPOSIT (%) :

C	Mn	Si	Cr	Ni	Mo	S	P	Cu
0.04 max	0.50-2.50	0.90 max	22.0-25.0	12.0-14.0	2.0-3.0	0.025 max	0.040 max	0.50 max

ALL WELD MECHANICAL PROPERTIES : (AS WELDED)

Ultimate Tensile Strength (MPa)	Elongation (L = 4d) %	CVN Impact Value Joules at +20oC
560 Min	30-40	50-70

Hydrogen in Weld metal: 4ml/100g.max (Mercury method)

SPECIAL FEATURES :

Carbon level controlled below 0.035%.
As weld metal contains higher level of Cr & Ni and also higher levels of ferrite, it proves to be versatile for joining vastly dissimilar steels, such as welding grades 316L or 304 or 410 to low alloy steels. Such versatility is due to the superior tolerance to dilution of alloying elements caused by carbon steels or low alloy steels. Such tolerance results in satisfactory combination of strength and ductility in the welded joint. Such combinations of dissimilar steels have to be tackled in welding of stiffners, brackets or other attachments.
The high level of austenite serves to absorb weld metal hydrogen and thereby to prevent diffusion of hydrogen into the hardened HAZ of carbon steel or low alloy steel. This reduces the risk of hydrogen cracking.

WELDING CURRENT RANGES & PACKING DATA FOR SIZES MANUFACTURED :

Dia (mm)	2.5	3.15	4.00	5.00
Length (mm)	350	350	350	350
Current (amp) (AC or DC+)	50-85	70-115	85-145	135-180

NOTE ON USAGE :

Ensure that electrodes are dry enough. In case of moisture pick-up redry the electrodes at 250oC for 30 to 60 minutes. Thereafter, either allow the oven to cool slowly to about 60oc or transfer them to a holding oven maintained at 50oC-60oC.
Clean the joint faces to remove moisture, grease or any foreign matter.
Employ welding currents within the prescribed range.
Keep the arc as short as possible.
Restrict weaving of electrode to within two and a half times the core wire diameter.
Use stainless steel wire brush for cleaning the weld beads.

GENERAL CHARACTERISTICS :

Lime – titania all position electrodes.
Exhibits smooth running.
Soft & stable arc with ease of striking and with negligible spatter.
Self-peeling slag.
Smooth bead appearance with fine ripples.
Weldable on AC and DC+ polarity.
Austenitic weld deposit which contains appropriate quantity of “FERRITE” to prevent cracking.
High resistance to general and intergranular corrosion and to creep.
Especially resistant to sulphuric acid.
High resistance is much better than that of 18Cr-18Ni stainless steel welds.

CHEMICAL ANALYSIS OF ALL WELDS DEPOSIT (%) :

C	Mn	Si	Cr	Ni	Nb (Cb)	S	P
0.07 max	0.05-2.0	0.90 max	17.0-20.0	11.0-14.0	2.0-3.0	0.03 max	0.04 max

ALL WELD MECHANICAL PROPERTIES :

Ultimate Tensile Strength (N/mm2)	Elongation (L = 4d)%	CVN Impact Value Joules at +20oC
56-66	30-42	56-80

WELDING CURRENT RANGES AND PACKING DATA FOR SIZES MANUFACTURED :

Dia (mm)	2.5	3.15	4.00	5.00
Length (mm)	350	350	350	350
Current (amp) (AC or DC+)	50-85	70-115	85-145	135-180
Pieces per carton	125	90	60	35

NOTE ON USAGE :

Ensure that electrodes are dry enough. In case of moisture pick-up redry the electrodes at 250oC for 30 to 60 minutes. Thereafter, either allow the oven to cool slowly to about 60oc or transfer them to a holding oven maintained at 50oC-60oC.
Clean the joint faces to remove moisture, grease or any foreign matter.
Employ welding currents within the prescribed range.
Keep the arc as short as possible.
Restrict weaving of electrode to within two and a half times the core wire diameter.
Use stainless steel wire brush for cleaning the weld beads.

Approved by: UHDE India Ltd.
KVAERNER POWERGAS INDIA LTD.

GENERAL CHARACTERISTICS :

Lime – titania all position electrodes.
Exhibits smooth running.
Soft & stable arc with ease of striking and with negligible spatter.
Self-peeling slag.
Smooth bead appearance with fine ripples.
Weldable on AC and DC+ polarity.
Austenitic weld deposit which contains appropriate quantity of “FERRITE” to prevent cracking.
High degree of corrosion resistance in oxidizing environments such as nitric acid.
High resistance to intergranular corrosion.

CHEMICAL ANALYSIS OF ALL WELDS DEPOSIT (%) :

C	Mn	Si	Cr	Ni	Nb (Cb)	S	P
0.04 max	0.50 – 2.0	0.90 max	17.0-20.0	11.0-14.0	2.0-3.0	0.03 max	0.04 max

ALL WELD MECHANICAL PROPERTIES :

Ultimate Tensile Strength kg/mm2	Elongation (L = 4d) %	CVN Impact Value Joules at +20oC
56-66	30-42	56-80

STEEL TO BE WELDED :

Steel Grades	BS970	DIN 17440	W.Nt	AFNOR NFA35-573/ 574/576	ASTM/ACI A240/A312	SIS	UNS
Extra low carbon	316S11	X2CrNiMo 17 13 2	1.4404	Z2 CND 17.12	316L TP316L	CF-3M2353	S31603
C < 0.03%		X2CrNiMo 18 14 3	1.4435
		X2CrNiMoN 17 12 2	1.4406	Z2 CND 17.12 a l’azote	316 LN		S31653
		X2CrNiMoN 17 13 3		1.4429 a l’azote	Z2CND 17.13
Medium carbon S31600	316S31	X5CrNiMo 17 12 2	1.4401	Z6 CND 17.12	316 TP 316 H CPF	8M (2437)
	316S33	X5CrNiMo 17 12 3	1.4436		TP316	2343	S30409
		G-X6CrNiMo 18 12	1.4437
		G-X10CrNiMo 18 9	1.4410
		G-X6CrNiMo 18 10	1.4408		CF-8c
TiNb stabilized	320S31	XCrNiMo 17 12 2	1.4571	Z6CNDT 17.12	316Ti	2344	S32100
		X5CrNiMo 18 9	1.4543	Z6 CNDT 17.13			S34700
		X6CrNiNb 18 10	1.4550	Z6 CNDNb 17.12	316Nb	CPF-10MC	S34709
		GX7 CrNiNb 18 9	1.4552	Z6CNDnb 17.13

WELDING CURRENT RANGES AND PACKING DATA FOR SIZES MANUFACTURED :

Dia (mm)	2.5	3.15	4.00	5.00
Length (mm)	350	350	350	350
Current (amp) (AC or DC+)	50-85	70-115	85-145	135-180
Pieces per carton	125	90	60	35

NOTE ON USAGE :

Ensure that electrodes are dry enough. In case of moisture pick-up redry the electrodes at 250oC for 30 to 60 minutes. Thereafter, either allow the oven to cool slowly to about 60oc or transfer them to a holding oven maintained at 50oC-60oC.
Clean the joint faces to remove moisture, grease or any foreign matter.
Employ welding currents within the prescribed range.
Keep the arc as short as possible.
Restrict weaving of electrode to within two and a half times the core wire diameter.
Use stainless steel wire brush for cleaning the weld beads.

Approved by : UHDE India Ltd.

GENERAL CHARACTERISTICS :

Lime – titania all position electrodes.
Exhibits smooth running.
Soft & stable arc with ease of striking and with negligible spatter.
Self-peeling slag.
Smooth bead appearance with fine ripples.
Weldable on AC and DC+ polarity.
Austenitic weld deposit which contains appropriate quantity of “FERRITE” to prevent cracking.
High degree of corrosion resistance in oxidizing environments such as nitric acid.
High resistance to intergranular corrosion.

CHEMICAL ANALYSIS OF ALL WELDS DEPOSIT (%) :

C	Mn	Si	Cr	Ni	Nb (Cb)	S	P
0.070 max	0.05-2.0	0.90 max	18.0-21.0	9.0-11.0	0.5-1.0	0.03 max	0.040 max

ALL WELD MECHANICAL PROPERTIES :

Ultimate Tensile Strength kg/mm2	Elongation (L = 4d) %	CVN Impact Value Joules at +20oC
56-66	30-42	56-80

STEEL TO BE WELDED :

Steel Grades	DIN 17440	W.Nt	AFNOR NFA35-573/ 574/576	ASTM/ACI A240/A312	SIS
Ti, Nb stabilized	X6CrNiTi 18 10	1.4541	Z6CNT 18.10	321,347
	X5CrNiNb 18 9	1.4543	Z6CNNb 18.10	TP321, TP347
	X6CrNib 18 10	1.4550		CF-8c, CPF-8c
	GX7CrNiNb 18 9	1.4552
Non Stabilized	X12CrNi 18 8	1.4300	Z10CN 18.09	302, 304	302, 304
	X5CrNi 18 10	1.4301	X6CN 18.09	TP304H, TP 304	2333
	X2CrNi 18 11	1.4306	X10CN 17.07	CF-8	2371
	G-X6CrNi 189	1.4308			2331
	G-X10CrNi 18 8

WELDING CURRENT RANGES AND PACKING DATA FOR SIZES MANUFACTURED :

Dia (mm)	2.5	3.15	4.00	5.00
Length (mm)	350	350	350	350
Current (amp) (AC or DC+)	50-85	70-115	85-145	135-180
Pieces per carton	125	90	60	35

NOTE ON USAGE :

Ensure that electrodes are dry enough. In case of moisture pick-up redry the electrodes at 250oC for 30 to 60 minutes. Thereafter, either allow the oven to cool slowly to about 60oc or transfer them to a holding oven maintained at 50oC-60oC.
Clean the joint faces to remove moisture, grease or any foreign matter.
Employ welding currents within the prescribed range.
Keep the arc as short as possible.
Restrict weaving of electrode to within two and a half times the core wire diameter.
Use stainless steel wire brush for cleaning the weld beads.

Approved by : UHDE India Ltd.

GENERAL CHARACTERISTICS :

Lime – titania all position electrodes.
Exhibits smooth running.
Soft & stable arc with ease of striking and with negligible spatter.
Self-peeling slag.
Smooth bead appearance with fine ripples.
Weldable on AC and DC+ polarity.
Suitable for welding steels of similar composition and also for clad steels, dissimilar steels and air hardening steels.
High resistance to oxidation and scaling upto 1150oC.
Avoid service in temperature range of 650oC – 859oC.
High resistance is much better than that of 18Cr-18Ni stainless steel welds.

CHEMICAL ANALYSIS OF ALL WELDS DEPOSIT (%) :

C	Mn	Si	Cr	Ni	S	P
0.10-0.20	1.0-2.50	0.60 max	25.0-28.0	20.0-22.50	0.025 max	0.040 max

ALL WELD MECHANICAL PROPERTIES :

Ultimate Tensile Strength kg/mm2	Elongation (L = 4d) %	CVN Impact Value Joules at +20oC
56-66	30-40	56-90

STEEL TO BE WELDED :

Steel Grades	BS990	DIN 17440	W.Nt	AFNOR NFA35-573/ 574/576	ASTM/ACI A240/A312	SIS
Heat resisting steels		X10CrA124	1.4762	Z10CAS24
		G-X25 CrNiSi 18 9	11.4825
		G-X40CrNiSi 22 9	1.4826
		X15CrNiSi 20 12	1.4828	Z15CN20.12
		G-X25CrNiSi 20 14	1.4832
	310S31	X15CrNiSi 25 20	1.4841		3105-CK20	2361	S31008
		X12CrNi 25 21	1.4845	X12CN25.20
		G-X40 CrNi 26 142	1.4843
				Z15CNS20.12
				Z15CN24.13

WELDING CURRENT RANGES AND PACKING DATA FOR SIZES MANUFACTURED :

Dia (mm)	2.5	3.15	4.00	5.00
Length (mm)	350	350	350	350
Current (amp) (AC or DC+)	50-85	70-115	85-145	135-180
Pieces per carton	125	90	60	35

NOTE ON USAGE :

Ensure that electrodes are dry enough. In case of moisture pick-up redry the electrodes at 250oC for 30 to 60 minutes. Thereafter, either allow the oven to cool slowly to about 60oc or transfer them to a holding oven maintained at 50oC-60oC.
Clean the joint faces to remove moisture, grease or any foreign matter.
Employ welding currents within the prescribed range.
Keep the arc as short as possible.
Restrict weaving of electrode to within two and a half times the core wire diameter.
Use stainless steel wire brush for cleaning the weld beads.

GENERAL CHARACTERISTICS :

Lime-titania based covering on core of 2209 grade, designed for highly pleasing overall operating characteristics.
Controlled weld chemistry (with C < 0.03%) for achieving:
a) Balanced austenite ferrite contents
b) High resistance to general corrosion, pitting corrosion & stress corrosion.
c) Pitting Resistance Equivalent (PREN) of > 35.
d) High yield strength (>550 MPa).
e) High notch toughness at subzero temperature down to -40oC.
Core wire of 2209 grade helps to bring about homogenous microstructure with ferrite content of 30-40%.

APPLICATIONS :

Designed for welding wrought, forged, or cast DSS of the standard grade 22 Cr – 9 Ni – 3 Mo and a number of proprietary DSS materials including Sandvik SAF 2205, SAF 2304. Avesta 2205, Thyssen Remanit 4462, Krupp Fale 223, Sumitomo SM 22Cr.

ASTM: A182 Gr. F 51 UNS: S31803, S32205 EN : 1.4462	Castings : ASTM A 890
	Grade	2A	3A	4A
	UNS	J 93345	J 93371	J 92205
	Class	CE 8 MN	CD 6 MN	CD 3 MN

These steels are now increasingly used in the offshore oil & gas, chemical & petrochemical process industries.

CHEMICAL ANALYSIS OF ALL WELDS DEPOSIT (%) :

C	Mn	Si	Cr	Ni	Mo	N	PREN
0.03 max	0.5-1.5	0.90 max	22.0-23.5	8.5-10.0	2.5-3.5	0.1-0.2	>35

PREN - % Cr + 3.3 x % Mo + 16 x % N

ALL WELD MECHANICAL PROPERTIES : (As Welded)

0.2% Proof Stress MPa		UTs	Elongation %
480 min		690 min	20 min
Typical	680	850	24-25
CVN Impact Values (Joules)
+20oC		70 – 75
-30oC		50 - 60
-40oC		40 - 50

Hardness (Approx) 240-250 Brinell.

WELDING CURRENT RANGES :

Dia (mm)	2.5	3.15	4.00	5.00
Length (mm)	350	350	350	350
DC+ or AC 70V	50-80	80-110	110-140	150-180

NOTE ON USAGE :

In welding duplex stainless steel, due attention has to be given to heat input :
a) Use welding currents within the prescribed range & as low as possible, consistent with plate thickness and proper fusion.
b) Keep the arc as short as possible.
c) Avoid heat build-up, minimizing weaving of electrode,
d) Control interpass temperature at 100o-150oC, & not exceeding 150oC,
e) Heat input: 1.0 to 1.5 kJ/mm
a) Clean the joint faces of all contamination.
b) Use stainless steel wire brush for cleaning the weld beads.
c) Ensure that electrodes are dry enough. Redry the electrodes at 250o to 300oC for one hour minimum. Thereafter, either allow the oven to cool slowly to about 60oC or transfer them to a holding oven maintained at 50o to 60oC.
C. PWHT – None
Solution treatment if required in special case at 1130 o +/- C + W.Q

This is specially designed for welding of duplex stainless steels of similar composition and containing copper

GENERAL CHARACTERISTICS :

Lime-titania covering to derive the advance of pleasuring operating characteristics on DC(+) as well as AC (70V).
Controlled weld chemistry for achieving.
a) The desired level of ferrite.
b) High resistance to general corrosion, pitting & stress corrosion.
c) High yield strength (> 600 MPa)

Applications: Pumps, valves, process equipment in offshore oil & gas industries, pulp & paper, textile industries, chemical and petrochemical plants.

MATERIALS TO BE WELDED (Mostly castings)

ASTM A351, A 744 (CD4MCu)
UNS J93370
ASTM A 240 (wrought)
UNS S32550
BS 3146 – ANC 21
BS 3100 332 C13
DIN 1.4515, 1.4517

Proprietary Alloys:
Creusot Uranus 55, 5OM
APV Lake and Elliot DPH
Langley Alloys Ferralium.

SPECIAL PROPERTY:

Addition of Copper:
(a) Confers improved corrosion resistance in sulphuric acid media,
(b) Increases strength and wear resistance.

CHEMICAL ANALYSIS OF ALL WELDS DEPOSIT (%) :

C	Mn	Si	S	P	Cr	Ni	Mo	Cu	N
0.06 max	0.05-1.5	0.9 max	0.025 max	0.035 max	24.0-27.0	7.0-8.0	2.8-4.0	1.5-2.5	0.10-0.25

ALL WELD MECHANICAL PROPERTIES (As welded):

Ultimate Tensile Strength kg/mm2	Elongation (L = 4d) %	CVN Impact Value Joules at +20oC	Hardness
760 min	15 min	30-50	300 HV

WELDING CURRENT RANGES :

Dia (mm)	2.5	3.15	4.00	5.00
Length (mm)	350	350	350	350
Current (amp) (AC or DC+)	60-80	75-110	100-140	140-200

NOTE ON USAGE :

Ensure that electrodes are dry enough. In case of moisture pick-up redry the electrodes at 200-250oC for 2 hrs. Thereafter, either allow the oven to cool slowly to about 60oc or transfer the electrodes to a holding oven maintained at 50-60oC. Avoid overdrying i.e. temperature not more than 300oC and not more than two cycles of two hours at 200-250oC. a) Use welding currents within the prescribed range, & as low as possible, consistent with plate thickness & proper fusion.
b) Keep the arc as short as possible.
c) Avoid heat build-up by minimizing weaving of electrode;
d) Control preheat & interpass temperature in the range of 100oC-200oC
Clean the joint faces of all contamination.
Use stainless steel wire brush for cleaning the weld beads.
Rapid cooling recommended if impact property has to be improved.
Prevent excessive ferrite formation (>65%) in case of a risk of cold cracking due to high restraint (control preheat and interpass in the range of 100-200oC).

GENERAL CHARACTERISTICS :

Lime-titania based covering designed for highly pleasing overall operating characteristics.
Controlled weld chemistry (with C < 0.03%) for achieving: a) Balanced austenite ferrite contents (30-50%, depending on heat input & cooling rate).
b) High resistance to general corrosion, pitting corrosion & stress corrosion, especially in chloride containing media e.g. sea water.
c) Pitting Resistance Equivalent (PREN) of > 40 (40-46).
d) High yield strength (>580 MPa).
e) High notch toughness at subzero temperature down to -40oC.
f) Core wire of DSS helps to achieve superior operating characteristics, combined with greater uniformity of weld metal & hence higher level of notch toughness.

MATERIALS TO BE WELDED (Mostly castings)

Designed for welding:
1. Wrought, forged, or cast SDSS of what is referred to as 2507 grade.
2. A number of proprietary SDSS materials, including Sandvik SAF 2507, & UR 47N.

ASTM: A182 Gr. F 53 UNS: S32750 EN : 1.4410
	Castings : ASTM A 890
	Grade : 5A
	Class : CE 3 MN
	UNS : J 93404

These, steels are now increasingly used in the offshore oil & gas, chemical & petrochemical process industries.

CHEMICAL ANALYSIS OF ALL WELDS DEPOSIT (%) :

C	Mn	Si	Cr	Ni	Mo	N	Cu	S	P	PREN
0.03 max	0.5-1.5	0.90 max	24.0-27.0	8.0-10.5	3.5-4.5	0.20-0.30	0.50 max	0.02 max	0.03 max	40-46

PREN - % Cr + 3.3 x % Mo + 16 x % N

Special properties: Weld metal meets the requirement of
a) IGC test as per ASTM A 262 Practice – C.
b) Pitting Corrosion test as per ASTM G48, Method A.

ALL WELD MECHANICAL PROPERTIES (As welded):

0.2% Proof Stress MPa		UTs	Elongation %
550 Min		760 min	16.0 min
Typical	700	880	20-24
CVN Impact Values (Joules)
+20oC	50-60	-20oC	30-40
0oC	40-50	-40oC	27 min

WELDING CURRENT RANGES :

Dia (mm)	2.5	3.15	4.00	5.00
Length (mm)	350	350	350	350
DC+ or AC 70V	50-80	75-110	100-140	140-200

NOTE ON USAGE :

In welding duplex stainless steel, due attention has to be given to heat input:
a) Use welding currents within the prescribed range & as low as possible, consistent with plate thickness and proper fusion.
b) Keep the arc as short as possible.
c) Avoid heat build-up, minimizing weaving of electrode,
d) Control interpass temperature at 100o-150oC, & not exceeding 150oC,
e) Heat input: 1.0 to 1.5 kJ/mm
f) Preheat is generally not required.
a) Clean the joint faces of all contamination.
b) use stainless steel wire brush for cleaning the weld beads.
c) ensure that electrodes are dry enough. Redry the electrodes at 250o to 300oC for one hour minimum. Thereafter, either allow the oven to cool slowly to about 60oC or transfer them to a holding oven maintained at 50o to 60oC.
PWHT – None

GENERAL CHARACTERISTICS :

Lime-titania based covering designed for highly pleasing overall operating characteristics.
Controlled weld chemistry (with C < 0.03%) for achieving:
(a) Balanced austenite ferrite contents (30-50% ferrite, depending on heat input & cooling rate).
(b) High resistance to general corrosion, pitting corrosion & stress corrosion, especially in chloride containing media e.g. sea water.
(c) Pitting Resistance Equivalent (PREN) of > 40 (42-46).
(d) High yield strength (>580 MPa).
(e) Good notch toughness.
(f) Addition of tungsten & copper for enhancing strength & corrosion resistance.

MATERIALS TO BE WELDED (Mostly castings)

Designed for welding:
1. Wrought, forged, or cast SDSS of what is referred to as 2507 grade.
2. A number of proprietary SDSS materials, including Sandvik SAF 2507, & UR 47N.

Castings : ASTM A 890	Proprietary Alloys
		UNS	EN
Grade : 6A	Zeron 100	S32760	1,4507
		(Wrought)
		J 93380 (Cast)
Class : CD 3 M WCuN	DP 3W	S 32740
Class : CD 3 M WCuN	DP 3W	J 93370
UNS: 93380	SD 40	S 32520	1.4501
UNS: 93380	UR 52 N+	S 32550

These, steels are now increasingly used in the offshore oil & gas, chemical & petrochemical process industries.

It can also be used for welding:
(a) Standard grade Duplex Stainless Steels such as UNS 32205 & S 31803 &
(b) Low alloy steels to duplex stainless steels.

CHEMICAL ANALYSIS OF ALL WELDS DEPOSIT (%) :

C	Mn	Si	Cr	Ni	Mo	N	W	Cu	S	P	PREN
0.03 max	0.5-2.0	0.90 max	24.0-27.0	8.0-10.5	2.5-4.5	0.20-0.30	0.5-1.0	0.50-1.5	0.02 max	0.03 max	42-46

PREN - % Cr + 3.3 x % Mo + 3.3 x % W/2 + 16 x % N

Special properties:

1) Weld metal meets the requirement of
a) IGC test as per ASTM A 262 Practice – C.
b) Pitting Corrosion test as per ASTM G48, Method A.
2) In line with base material such as Zeron 100, weld metal of S. S. 4475 (SPL) is fortified with addition of Cu & W. Both these elements together confer a higher level of tensile strength and corrosion resistance. Presence of Cu improves corrosion resistance in a number of acid environments also. Tungsten enhances tensile strength & furthermore, improves pitting corrosion resistance. (As is evident from the formula for PREN, W plays a part). Hence, it displays high resistance to pitting attack in more aggressive chloride environment such as seawater at elevated temperatures.
3) Tensile strength is about 10% higher than that of E 2594 (meant for welding grade 2507 or casting Grade 5A).
4) Presence of Cu & W together enlarge the scope for using this grade of steel and weld metal in chemical and process industries, in addition to offshore oil and gas industry.

ALL WELD MECHANICAL PROPERTIES (As welded):

0.2% Proof Stress MPa		MPa	Elongation %
550 Min		760 min	16.0 min
Typical	700	880	20-24
CVN Impact Values (Joules)
+20oC		50-60
30oC		30-45
-20oC		30-40

Hardness : 260 – 290 Brinell.

WELDING CURRENT RANGES :

Dia (mm)	2.5	3.15	4.00	5.00
Length (mm)	350	350	350	350
DC+ or AC 70V	50-80	75-110	100-140	140-200

NOTE ON USAGE :

A. In welding duplex stainless steel, due attention has to be given to heat input: a) Use welding currents within the prescribed range & as low as possible, consistent with plate thickness and proper fusion.
b) Keep the arc as short as possible.
c) Avoid heat build-up, minimizing weaving of electrode,
d) Control interpass temperature at 100o-150oC, & not exceeding 150oC,
e) Heat input: 1.0 to 1.5 kJ/mm
f) Preheat is generally not required.
a) Clean the joint faces of all contamination.
b) use stainless steel wire brush for cleaning the weld beads.
c) ensure that electrodes are dry enough. Redry the electrodes at 250o to 300oC for one hour minimum. Thereafter, either allow the oven to cool slowly to about 60oC or transfer them to a holding oven maintained at 50o to 60oC
PWHT – None

GENERAL CHARACTERISTICS & SPECIAL PROPERTIES:

It displays highly pleasing overall operating characteristics.
A fully austenitic stainless steel electrode.
Deposits weld metal of extra low carbon level and also stabilized with Nb, for resistance to intergranular corrosion, & with low residuals to improve resistance to cracking.
Addition of Molybdenum and Copper at substantial levels.
This alloy combination confers high degree of corrosion resistance in
a) Sulphuric & sulphurous acids and their salts, in particular,
b) Other mineral acids &
c) Organic acid.

MATERIALS TO BE WELDED:

It is designed for welding of Alloy 20 type steels, produced as castings and supplied under proprietary names such as:
Carpenter Alloy 20, 20Cb, & 20Cb-3
Lake & Elliot Paramount P20
Meigh Langalloy 20V.
Specifications: ASTM A351, A 744 Grade CN – 7M
BS 1504 – 332 C 11.

APPLICATIONS:

This electrode is for welding of base materials mentioned above, mostly castings, in chemical process industry and metal cleaning and pickling operations.
Tanks, cast pumps & valves, agitators and rotors, heat exchangers.

CHEMICAL ANALYSIS OF ALL WELDS DEPOSIT (%) :

C	Mn	Si	S	P	Cr	Ni	Mo	Nb(Cb)*	Cu
0.03 max	1.50-2.50	0.30 max	0.015 max	0.020 max	19.0-21.0	32.0-36.0	2.0-3.0/td>	0.40 max	3.0-4.0

*Nb(Cb) = 8 x % C, Min.

ALL WELD MECHANICAL PROPERTIES : (As Welded)

Ultimate Tensile Strength (MPa)	Elongation (L = 4d) %	Hardness (Typical) 180 HV 40
520-580	30-40

WELDING CURRENT RANGES FOR SIZES MANUFACTURED:

Dia (mm)	2.50	3.15	4.00
Length (mm)	350	350	350
Current Range (amp) DC(+)	60-80	70-110	90-150

NOTE ON USAGE :

Clean the joint faces thoroughly to remove any foreign matter.
Use stainless steel wire brush for cleaning welds.
Redry electrodes for 1-2 hours at 200o-250oC after taking care to place electrodes in the oven at room temperature. Thereafter, allow the oven to cool to 60oC-80oC and maintain at this temperature before removing the electrodes for using. In the alternative, transfer the electrodes to a holding oven maintained at 60o-80oC. avoid excessive redrying, i.e., not over 300oC and not more than two cycles of 2 hours each.
For best results, use this electrodeon DC(+) only. Use short arc to the extent possible. Minimize weaving. In line with the safe practices in welding of austenitic stainless steels, avoid build up of heat and keep interpass temperature below 150oC.
Use welding currents within the range and also as low as possible, consistent with proper fusion, to control heat input and dilution, so as to prevent micro-fissuring in HAZ or in weld metal. It has to be noted that this fully austenitic stainless steel is highly sensitive to heat input and to impurities.
If necessary, use buttering technique at lowest possible heat input (small diameter electrode).

SPECIAL NOTES:

Highly austenitic and with addition of niobium which increases the susceptibility to hot cracking. Furthermore, the higher level of silicon in castalloy (for improving fluidity for casting) tends to contribute to silicon pick up which, in turn, enhances cracking sensitivity. Hence, weld repair of casting defects poses a challenge, & calls for utmost care in controlling heat input through selection of size of electrode and welding current, degree of weaving and also in ensuring cleanliness of joint faces.
The core wire is of grade 320 with due control on undesirable elements, i.e., with low residuals. The coating is formulated appropriately, especially to permit relatively low welding currents. These two factors contribute significantly to the welding performance for sound welds.

GENERAL CHARACTERISTICS & SPECIAL PROPERTIES:

It displays highly pleasing overall operating characteristics.
A fully austenitic stainless steel electrode.
Deposits weld metal of extra low carbon level and also stabilized with Nb, for resistance to intergranular corrosion, & with low residuals to improve resistance to cracking.
Addition of Molybdenum and Copper at substantial levels.
This alloy combination confers high degree of corrosion resistance in
a) Sulphuric & sulphurous acids and their salts, in particular,
b) Other mineral acids &
c) Organic acid.

MATERIALS TO BE WELDED:

APPLICATIONS:

CHEMICAL ANALYSIS OF ALL WELDS DEPOSIT (%) :

C	Mn	Si	S	P	Cr	Ni	Mo	Nb(Cb)*	Cu
0.03 max	1.50-2.50	0.30 max	0.015 max	0.020 max	19.0-21.0	32.0-36.0	2.0-3.0/td>	0.40 max	3.0-4.0

*Nb(Cb) = 8 x % C, Min.

ALL WELD MECHANICAL PROPERTIES : (As Welded)

Ultimate Tensile Strength (MPa)	Elongation (L = 4d) %	Hardness (Typical) 180 HV 40
520-580	30-40

WELDING CURRENT RANGES FOR SIZES MANUFACTURED:

Dia (mm)	2.50	3.15	4.00
Length (mm)	350	350	350
Current Range (amp) DC(+)	60-80	70-110	90-150

NOTE ON USAGE :

Clean the joint faces thoroughly to remove any foreign matter.
Use stainless steel wire brush for cleaning welds.
Redry electrodes for 1-2 hours at 200o-250oC after taking care to place electrodes in the oven at room temperature. Thereafter, allow the oven to cool to 60oC-80oC and maintain at this temperature before removing the electrodes for using. In the alternative, transfer the electrodes to a holding oven maintained at 60o-80oC. avoid excessive redrying, i.e., not over 300oC and not more than two cycles of 2 hours each.
For best results, use this electrodeon DC(+) only. Use short arc to the extent possible. Minimize weaving. In line with the safe practices in welding of austenitic stainless steels, avoid build up of heat and keep interpass temperature below 150oC.
Use welding currents within the range and also as low as possible, consistent with proper fusion, to control heat input and dilution, so as to prevent micro-fissuring in HAZ or in weld metal. It has to be noted that this fully austenitic stainless steel is highly sensitive to heat input and to impurities.
If necessary, use buttering technique at lowest possible heat input (small diameter electrode).

SPECIAL NOTES:

Highly austenitic and with addition of niobium which increases the susceptibility to hot cracking. Furthermore, the higher level of silicon in castalloy (for improving fluidity for casting) tends to contribute to silicon pick up which, in turn, enhances cracking sensitivity. Hence, weld repair of casting defects poses a challenge, & calls for utmost care in controlling heat input through selection of size of electrode and welding current, degree of weaving and also in ensuring cleanliness of joint faces.
The core wire is of grade 320 with due control on undesirable elements, i.e., with low residuals. The coating is formulated appropriately, especially to permit relatively low welding currents. These two factors contribute significantly to the welding performance for sound welds.

GENERAL CHARACTERISTICS & SPECIAL PROPERTIES:

Special electrode with lime-titania type covering. E254 welding electrode has been designed for welding of 6%. Mo Super-austenitic parent material of similar composition.
Operates with pleasing welding performance characteristics – low spatter, smooth arc well controlled weld pool, easy deslagging & smooth weld beads.
Weld metal of High PRE (>40) (PRE = %Cr + 3.3 x %Mo + 16 x %N)

MATERIALS TO BE WELDED:

a) Cast
ASTMA A 351 CK3MCuN
b) Wrought
ASTM – UNS S31254, A182 F44
AVESTA 254 SMO

APPLICATIONS:

Mostly in foundries for welding or repair of castings for use in process plant wherein service conditions demand high resistance to chloride pitting and crevice corrosion, such as in media containing sea water.

Heat exchangers and pipe work.
Pulp bleaching plants.
Gas cleaning installations
Acid solution containing halides.

CHEMICAL ANALYSIS OF ALL WELDS DEPOSIT (%) :

C	Mn	Si	Cr	Ni	Mo	N	Cu	S	P
0.03 max	0.8-1.5	0.80 max	19.5-21.0	17.5-19.5	6.0-7.0	0.18-0.25	0.50-1.00	0.02 max	0.03 max

ALL WELD MECHANICAL PROPERTIES : (Solution treated 1200-1240oC /2 hr+ WQ)

Ultimate Tensile Strength (MPa)	Elongation (L = 4d) %
600-750	35-45

WELDING CURRENT RANGES FOR SIZES MANUFACTURED:

Dia (mm)	2.50	3.15	4.00
Length (mm)	350	350	350
Current Range (amp) DC(+)	60-90	80-110	130-160

NOTE ON USAGE :

Clean the joint faces thoroughly to remove any foreign matter.
Use stainless steel wire brush for cleaning welds.
Redry electrodes for 1-2 hours at 200o-250oC after taking care to place electrodes in the oven at room temperature. Thereafter, allow the oven to cool to 60oC-80oC and maintain at this temperature before removing the electrodes for using. In the alternative, transfer the electrodes to a holding oven maintained at 60o-80oC. avoid excessive redrying, i.e., not over 300oC and not more than two cycles of 2 hours each.
For best results, use this electrodeon DC(+) only. Use short arc to the extent possible. Minimize weaving.
Preheat not required. However, heating upto 100oC will help to burn off any organic matter. Thereafter, welding may be commenced after cooling to 50oC or lower.
In line with the safe practices in welding of austenitic stainless steels, avoid build up of heat and keep interpass temperature well below 150oC.
Use welding currents within the range and also as low as possible, consistent with proper fusion, to control heat input and dilution, so as to prevent micro-fissuring in HAZ or in weld metal. It has to be noted that this fully austenitic stainless steel is highly sensitive to heat input and to impurities.
In case of highly susceptible castings, it is a good practice to do buttering with 100oC max interpass and less than 1 kJ/mm heat input (i.e., small diameter electrode). This will facilitate subsequent welding operation.
Post weld solution treatment becomes necessary, as Mo-rich weld deposit (matching composition of base material) in as welded condition, is prone to Mo micro segregation which impairs pitting resistance in service. Prone to inter metallic phase formation (sigma, chi) in the range 600o - 1000oC, especially when duration in this range is long due to slow heating. Hence, 1200oC – 1240oC for one hour per 25 mm is recommended to dissolve these phases.

When such solution treatment is not possible, it is recommended to use nickel-base alloy electrode such as our cryomate – 5 (ENiCrMo-3).

GENERAL CHARACTERISTICS

Lime-titania based covering designed for highly pleasing overall operating characteristics in terms of arc stability, low spatter, ease of slag removal, smooth well rippled weld beads.

MATERIALS TO BE WELDED:

GRADE	UNS	ASTM	EN
17/4 PH	S17400	A 564 Gr.630	1.4542

Cast Alloys:

ASTM A 747 CB-7Cu-1, CB 7Cu-2

The group of precipitation hardening stainless steels, combines exceptionally high strength with good corrosion resistance similar to that of 304L.

Base materials are always solution treated followed by ageing treatment, depending on the final strength level required. These alloy steels are capable of attaining proof strength of 1100 MPa and even higher which however, will have low ductility and low toughness.

APPLICATIONS:

Oil & gas, chemicals, pulp & paper, marine, aerospace, power generation industries, for propeller shafts, pump impellers, rotors, valve bodies, compressor impellers, centrifuge bowls, gas turbine components.

CHEMICAL ANALYSIS OF ALL WELDS DEPOSIT (%) :

C	Mn	Si	S	P	Cr	Ni	Cu	Nb	Mo
0.05 max	0.25-0.75	0.75 max	0.03 max	0.04 max	16.0-16.75	4.5-5.0	3.25-4.00	0.15-0.30	0.75 max

ALL WELD MECHANICAL PROPERTIES : (Solution treated 1200-1240oC /2 hr+ WQ)

	Ultimate Tensile Strength	Elongation (L = 4d) %	CVN Impact Energy (Joules at 0oC)
		950 MPa min.	7.0 min.	80-110
Typical values	1000	12.0	95

P.W.H.T : (As per AWS A 5.4 – 2006)
1025-1050oC for one hour (+0, -15 minutes) and air cool to ambient, and then precipitation hardening at 610oC – 630oC for four hours (+0, -15 minutes) and air cool to ambient.

SPECIAL PROPERTIES OF WELD METAL:

In line with base materials, such as Alloys 630 & 450. (a) Addition of copper to the Cr-Ni martensitic stainless steels, promotes precipitation hardening reaction when the steel is subjected to appropriate heat treatment. This leads to high strength (1000 MPa or higher).
(b) Presence of Nb impacts some stabilization.
(c) Proof strength level can be varied within a wide range of 600 to 1100 MPa, through changes in heat treatment to suit specific application. Thus, weld metal may be used
(i) As welded or
(ii) Welded & precipitation hardened or
(iii) Welded, solution treated and precipitation hardened.

WELDING CURRENT RANGES FOR SIZES MANUFACTURED:

Dia (mm)	2.50	3.15	4.00	5.00
Length (mm)	350	350	350	350
Current Range (amp) DC(+)	70-100	80-115	130-160	180-200

NOTE ON USAGE :

Ensure that electrodes are dry enough. In case of moisture pick-up redry the electrodes at 250oC for 30 to 60 minutes. Thereafter, either allow the oven to cool slowly to about 60oC or transfer them to a holding oven maintained at 50oC-60oC.
Clean the joint faces thoroughly to remove any foreign matter.
Employ welding currents within the prescribed range.
Keep the arc as short as possible.
Restrict weaving of electrode to within two and a half times the core wire diameter.
Use stainless steel wire brush for cleaning welds.