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Wire electrodes for inert-gas welding

NT® Wire electrodes for inert-gas welding

Processes: WIG und MAG

Standard designation as specified in
DIN 8559/8575
material no.
AWS
EN
Standard analysis of weld metal,
%
Base metal

B: structural steels, R: pipe steels,
K: boiler steels, G: steel castings,
Fk: fine-grained structural steels, S: shipbuilding steel, quality grades A-E

EN standards: see pages 52-53
Applications and properties
SG 2
SG 2
1.5152
ER7O S-6
EN 1668:W425W3Si1
EN 440:G3Si1
C
Si
Mn
0,1
0,9
1,5
B: St 34-St 52
R: St 35.8, St 45.8
K: H I - H IV, 17 Mn 4, 19 Mn 5
G: GS 38-GS 45
Fk: StE 255-StE 355, WStE 255-WStE 355
S: A-B-C-D-E
Universal applicability in building construction, boiler and tank construction under CO2 and gas mixtures; largely spatter-free material transfer even under CO2; especially well suited for thick-plate welding at high current strength because of viscous weld pool
SG 3
SG 3
ER7O S-6
1.5130
EN 440:G4Si1
C
Si
Mn
0,08
0,9
1,7
B: St34 St52
R: St 35.8, St 45.8, St55
K: HI-HIV, 17 Mn 4, 19 Mn 5
G: GS 38-GS 45
Fk: StE 255-StE 420, WStE 420
S: A-B-C-D-E
Because of low weld-pool viscosity especially well suited for short-arc welding and out-of-position welding; largely spatter-free material transfer even under CO2; also suited for vertical-down welding with wire of small diameter
NiMo 1-IG
ER90 S-G
EN 12534:Mn3Ni1Mo
-
C
Si
Mn
Ni
Mo
0,08
0,6
1,8
1,0
0,3
Fk: StE 460-StE 500, TStE 460-TStE 500 quenched and tempered Fk structural steels, such as
N-A-X-TRA 55-65
20 Mn Mo Ni 55
Welding of joints on high-strength quenched and tempered structural steels in tank, pipeline, and equipment construction; also suited for low-temperature applications; adjustment of preheating and interpass temperatures necessary for matching the base metal
NiMo 1,2-IG
-
-
ER 100 S-G
EN 12534: Mn3Ni1CrMo
C
Mn
Cr
Ni
Mo
0,08
1,6
0,3
1,4
0,25
Fk: StE-, TStE 460-500
N-A-XTRA 56-65
Welding of joints on high-strength quenched and tempered structural steels in tank, pipeline, and equipment construction, automotive and machine construction; adjustment of preheating and interpass temperatures necessary for matching the base metal
NiCrMo 2,5-IG
-
-
ER 110 S-G
EN12534:
Mn3CrNi2,5Mo
C
Si
Mn
Cr
Ni
Mo
0,08
0,6
1,4
0,3
1,4
0,25
Fk: quenched and tempered Fk structural steels, such as
N-A-X-TRA 65-70, USS-T 1, etc.
Welding of joints on quenched and tempered Fk structural steels with stringent requirements on low-temperature ductility, for instance, in the construction of LPG tankers; adjustment of preheating and interpass temperatures necessary for matching the base metal
NiCu 1-IG
-
-
ER 80 S-Ni 1
EN 440:G 424 GO
C
Si
Mn
Ni
Cu
0,1
0,5
1,1
1,0
0,4
Weather-proof structural steels, as specified in StEW Sheet
087-70: WTSt 37-2, WTSt 37-3, WTSt 52-3
Special structural steels, such as Corten A, Patinax 37, Alcodur 50, Koralpin 52
Special application for welding work on weather-proof structural steels, such as in bridge construction; high low-temperature ductility
2,5 Ni-IG
-
-
ER 8O S-Ni 2
EN 440:G2Ni2
C
Si
Mn
Ni
0,1
0,6
1,1
2,5
B+R: TTSt 35-TTSt 45 (N+V)
low-temperature Ni steels, such as
14 Ni 6, 10 Ni 14,12 Ni 14
Fk: TStE 255-TStE 380
High-grade joints in tank and pipeline construction, such as components of plants and machines for the refrigeration industry; weld metal characterised by especially high low-temperature ductility and ageing stability; TIG welding recommended for thin sheets and root passes
Mo-IG
SG Mo
1.5424
ER 80 S-G
EN 1 2070:W MoSi
EN 1 2070:G MoSi
C
Si
Mn
Mo
0,1
0,6
1,1
0,5
B: St 52
R: St 45.8, 15 Mo 3
K: H Ill - H IV, 17 MNn 4, 19 Mn 5, 15 Mo 3,15 NiCuMoNb 5, 20 MnMo 45,
17 MnMoV 64
G: GS-22 Mo 4
Fk: StE 255-StE 460
Steam-boiler, pressure-vessel (autoclave), and especially pipeline construction (natural gas pipelines); suited for operating temperatures up to 500 °C
CrMo 1-IG
SG CrMo 1
1.7339
ER 80 S-G
EN 12070:W CrMo 1 Si
EN 12070:G CrMo 1 Si
C
Si
Mn
Cr
Mo
0,12
0,6
1,0
1,1
0,5
K: HIVL, 13 CrMo 44
G: GS-17 CrMo 55
Steam-boiler, pressure-vessel (autoclave), and especially pipeline construction for operating temperatures up to 550 °C, also suited for welding work on tempering and case-hardening steels
CrMo 2-IG
CrMo 2
1.7384
ER 90 S-G
EN 12070:W CrMo 2 Si
EN 12070:G CrMo 2 Si
C
Si
Mn
Cr
Mo
< 0,08
0,6
1,1
2,8
1,0
K: 10 CrMo 910
G: GS-12 CrMo 910
Steam-boiler, pressure-vessel (autoclave), and pipeline construction, especially for pipes in cracking units of the oil industry; operating temperatures up to 600 °C;
for welding work on tempering and case-hardening steels with up to 2-3 per cent Cr

{mospagebreak title=Page 2}

NT® wire electrodes for inert-gas welding

Processes: WIG and MAG

Standard designation as specified in DIN
material no.
AWS
EN
Standard analysis of weld metal,
%
Base metal* Applications and properties
20 MVW-IG
SG CrMoWV 12
1.4937
-
EN12979:W CrMoWV12
C
Si
Mn
Cr
Mo
W
V
0,2
0,4
0,6
11,5
1,0
0,5
0,3
K: X20 CrMoWV 12 1 For welding of joints on modified 12 % Cr steels in the chemical industry as well as in turbine and steam-boiler construction for operating temperatures up to 600 °C; preheating and interpass temperature: about 400 °C; furnace cooling (about 100 °C) after welding, followed by annealing at 760 °C for 4 h, or quenching and tempering for 1/2 h at 1050 °C/oil + 2 h at 760 °C
16/13-IG
-
1.4961
-
EN 12072:W Z 16 13 Nb
C
Si
Mn
Cr
Ni
Nb
0,15
0,6
2,6
16,0
13,5
+
K, R: X8 CrNiNb 16 13 Welding of high-quality joints on high-pressure steam boilers and turbine components for operating temperatures above 550 °C; fully austenitic weld metal, insensitive toward embrittlement, immune to hot cracking; no preheating necessary, attention necessary for keeping heat input low
18/11-IG
SG X6 CrNi 18 11
1.4948
ER 308 H
EN 12072:W 19 9 H
EN 12072:G 19 9 H
C
Si
Mn
Cr
Ni
0,04
0,6
1,4
19,0
9,8
K, R: X6 CrNi 18 11
X3 CrNi 18 11
very high-temperature resistant austenitic Cr-Ni steels
Austenitic welding filler with controlled ferrite content for root welding and for welding of predominantly thin-walled components in boiler, reactor, and turbine construction; for operating temperatures up to 700 °C, in the case of cold-condition corrosion, usable up to 300 °C; interpass temperature: max. 200 °C; material no. 1.4541 and 1.4550, approved for use in the high-temperature-resistant range up to 550 °C, likewise weldable with quality grade 18/11-IG
4806-IG
DIN 1736:
S-NiCr 20 Nb
2.4806
ER NiCrMo3
C
Si
Mn
Cr
Nb
Fe
Ni
Ti
< 0,03
< 0,3
3,0
20,0
2,5
< 1,5
Rest
+
NiCr 15 Fe with X8 Ni 9, including the 1.5-5 % Ni steels; St 37.2-St.52.3 H I-H III, 17 Mn 4, 15 Mo 3 with NiCr 15 Fe and corrosion-resistant, low-temperature austenitic steels; low-alloy boiler steels on high-temperature-resistant austenitic steels and high-temperature-resistant Cr steels Welding filler for corrosion-resistant, high- and low-temperature-resistant joints in chemical apparatus, boiler, and reactor construction; moreover for ferrite-austenite joints at operating temperatures up to 550 °C; fully austenitic weld metal, insensitive toward embrittlement, chemically stable, scale-resistant up to 1350 °C and stable at low-temperatures down to -196 °C
625-IG
DIN 1736:
S-NiCr 21 Mo 9 Nb
2.4831
ER NiCrMo 3
C
Cr
Ni
Mo
Nb
Fe
< 0,02
21,5
60,0
9,0
3,5
< 2,0
1.4529, 1.4583, 1.4876,
2.4641, 2.4816, 2.4856 as well as mixed joints with H III, 17 Mn 4, 15 Mo 3, StE 355 and X8 Ni 9
Wire electrode for welding of high-quality joints on Mo-alloyed nickel-based alloys (such as INCONEL 625, INCOLOY 825 (©))‚ as well as very high-temperature-resistant and heat-resistant steels for operating temperatures up to 550 °C (1200 °C in a sulphur-free atmosphere); highly immune to hot cracking, resistant toward stress-corrosion cracking; optimal results with the application of the pulsed-arc technique with the inert gases argon and argon/helium
4370-IG
DIN 8555:
MSG 8-GZ-200
DIN 8556:
SG X15 CrNiMn 18 8
1.4370
ER 307
EN 12072:W 18 8 Mn
EN 12072:G 18 8 Mn
C
Cr
Ni
Mn
0,08
19,3
9,0
7,0
High-strength unalloyed as well as alloyed structural and tempering steels with and among one another; unalloyed as well as alloyed steels with high-alloy Cr- and Cr-Ni steels; heat-resistant steels up to 850 °C; austenitic manganese steels together and with other steels; low-temperature sheet and pipe steels in combination with low-temperature austenitic materials Especially crack-resistant joints on high-strength unalloyed and alloyed tempering steels, high-temperature-resistant structural steels, stainless Cr steels, austenitic manganese steels together and in combination with other steel types; moreover, for ductile, stress-compensating intermediate passes in hard-facing with hard alloys and repair of cavitation damage on water turbines; austenitic weld metal, corrosion-resistant, scale-resistant up to 850 °C, and ductile at subzero temperatures down to -110 °C
4337-IG
DIN 8556:
SG X10 CrNi 30 9
1.4337
ER 312
EN 12072:W299
EN 12072:G 299
C
Cr
Ni
0,12
30,0
9,5
High-strength tempering steels, austenitic manganese steel, tool steel, wearing sheets of different alloys Well-known “29/9” alloy for welding of crack-resistant joints on steels which are difficult to weld, as well as for ductile intermediate passes in hard-facing
19/9 M-IG
X12 CrNiMo 19 10 3
1.4431
ER 308
EN 12072:W 20 10 3
EN 12072:G 20 10 3
C
Cr
Ni
Mo
0,08
19,0
9,5
3,5
High-strength, unalloyed structural, tempering, and hard-facing steels, with and among one another, unalloyed as well as alloyed boiler or structural steels with high-alloy Cr and Cr-Ni steels, austenitic manganese steels

Welding of joints on austenitic and ferritic steels; moreover, for high-strength tempering steels, stainless Cr steels, austenitic manganese steels, together and in combination with other steel types; austenitic weld metal, with increased ferrite content, crack-resistant and ductile; adjustment of preheating and interpass temperatures necessary for matching the base metal

{mospagebreak title=Page 3}

NT® Wire electrodes for inert gas welding

Processes: WIG and MAG

Standard designation
as specified in DIN 8556
material no.
AWS
EN 12072
Standard analysis of weld metal,
%
Base metals* Applications and Properties
4302-IG
SG X5 CrNi 19 9
1.4302
ER 308
C
Cr
Ni
≤ 0,06
19,9
9,5
1.4300 X12 CrNi18 8
1.4301 X5 CrNi 18 9
1.4308 G-X6 CrNi 18 9
1.4312 G-X10 CrNi 18 8
Welding of joints in chemical apparatus and tank construction, in the textile and cellulose industries, as well as in dye-house operations; moreover, weld surfacing of sealing surfaces on valves and fittings exposed to acids, as well as on gas, water and steam valves of unalloyed or low-alloy steels; austenitic weld metal with low ferrite content, scale-resistant up to 800 °C
4551-IG
SG X5 CrNiNb 19 9
1.4551
ER 347
W 19 9 Nb
G 19 9 Nb Si
C
Cr
Ni
0,04
19,3
9,5
1.4541 X10 CrNiTi 18 9
1.4543 X5 CrNiNb 18 9
1.4550 X10 CrNiNb 18 9
1.4878 X12 CrNiTi 18 9
1.6903 X10 CrNiTi18 10
1.4552 G-X7 CrNiNb 18 9
Welding of joints in chemical apparatus and tank construction, in the textile and cellulose industries, as well as in dye-house operations; moreover, weld surfacing of sealing surfaces on valves and fittings exposed to acids, as well as on gas, water and steam valves of unalloyed or low-alloy steels; austenitic weld metal with low ferrite content, scale-resistant up to 800 °C
4576-IG
SG X5CrNiMoNb 19 12
1.4576
ER 318
W 19 12 3 Nb
G 19 12 3 Nb Si
C
Cr
Ni
Mo
Nb
0,04
19,3
11,4
2,8
+
1.4571 X10 CrNiMoTi 18 10
1.4573 X10 CrNiMoTi 18 12
1.4580 X10 CrNiMoNb 18 10
1.4583 X10 CrNiMoNb 18 12
1.4581 G-X7 CrNiMoNb 18 10
Welding of joints subject to more severe stress in the chemical industry, cellulose industry, and in dye-house operations; also weld surfacing of sealing surfaces on valves and fittings exposed to acids, as well as on gas, water and steam valves of unalloyed or low-alloy steels
4316-IG
SG X2 CrNi 19 9
1.4316
ER 308 L
W 19 9 L
G 19 9 L Si
C
Cr
Ni
0,02
19,9
9,9
1.4306 X2 CrNi 18 9
1.4311 X2 CrNiN 18 12
1.4550 X10 CrNiNb 18 9
1.6905 X10 CrNiNb 18 10
Welding of joints in chemical apparatus and tank construction, particularly in the chemical-pharmaceutical and cellulose industries, especially for very-low-carbon Cr-Ni or Cr-Ni-Mo steels; moreover, for weld surfacing on unalloyed steels; high stability toward intercrystalline (intergranular) corrosion; also scale-resistant up to 800 °C
4430-IG
SG X2
1.4430
ER 316 L
W 19 12 3 L
G 19 12 3 L Si
C
Cr
Ni
Mo
0,02
18,5
11,3
2,8
1.4404 X2 CrNiMo 18 10
1.4435 X2 CrNiMo 18 12
1.4429 X2 CrNiMoN 18 13
1.4583 X10 CrNiMoNb 18 12
Welding of joints in chemical apparatus and tank construction, particularly in the chemical-pharmaceutical and cellulose industries, especially for very-low-carbon Cr-Ni or Cr-Ni-Mo steels; moreover, for weld surfacing on unalloyed steels; high stability toward intergranular corrosion; also scale-resistant up to 800 °C
ASN 5-IG
X3 CrNiMnMoN 19 16
1.4453
ER 317 LN
W Z 18 16 5 N L
G Z 18 16 5 N L N
C
Mn
Cr
Ni
Mo
N
0,03
5,4
18,8
16,8
4,2
+
1.4439 X3 CrNiMo 17 13
1.4449 X5 CrNiMo 17 13
1.4429 X2 CrNiMoN 18 13
1.4583 X10 CrNiMoNb 18 12
Welding of joints on components for sea-water desalination plants, ventilator impellers, centrifuge drums, etc., which are exposed to media which contain chlorine; fully austenitic weld metal with especially high chemical stability toward pitting, crevice corrosion, and stress-corrosion cracking; for operating temperatures up to 300 °C; with media which do not initiate intergranular corrosion, up to 400 °C
4462-IG
-
1.4462
ER 2209 Mo 3,2
W 22 9 3 N L N 0,13
G 22 9 3 N L
C
Cr
Ni
Mo
N
< 0,02
22,5
9,2
3,2
0,13
1.4462 X2 CrNiMoN 22 5 as well as similarly alloyed ferritic-austenitic materials with increased strength
1.4462 with 1.4583
1.4462 with H I / H II,
StE 355, 17 Mn 4, 15 Mo 3
Wire electrodes for welding of ferritic-austenitic duplex steels; weld metal characterised by very high stability toward stress-corrosion cracking and pitting, in addition to high strength and ductility; particular attention necessary for controlling dilution, in order to ensure the desired, special properties of the weld metal; preheating and postweld heat treatment not generally necessary; maximal interpass temperature: 150 °C
4820-IG
SG X12 CrNi 25 4
1.4820
W 25 4
G 25 4
C
Cr
Ni
0,08
26,0
4,5
1.4821 X20 CrNiSi 25 4
1.4823 G-X40 CrNi 27 4
1.4713 X10 CrAI 7
1.4724 X10 CrAI 13
1.4742 X10 CrAI 18
1.4762 X10 CrAI 24
Welding of joints on steels of identical or similar types; ferritic-austenitic weld metal, heat-resistant up to 1100 °C, especially if exposed to attack by sulphur-charged oxidising or reducing combustion gases; adjustment of preheating and interpass temperatures necessary for matching the base metal
4829-IG
SG X12 CrNi 22 12
1.4829
ER 309
W 22 12 H
C
Cr
Ni
0,12
22,3
10,6
1.4828 X15 CrNiSi 20 12
1.4826 G-X40 CrNiSi 20 9
Welding of joints on steels of identical or similar types; austenitic weld metal with low ferrite content, heat-resistant up to 1000 °C; especially well suited for use on components exposed to oxidising gases which contain nitrogen compounds, but very little oxygen; adjustment of preheating and interpass temperatures necessary for matching the base metal
4842-IG
SG X12 CrNi 25 20
1.4842
ER 310
W 25 20 Mn
G 25 20 Mn
C
Cr
Ni
0,13
25,0
20,5
1.4841 X15 CrNiSi 25 20
1.4845 X12 CrNiSi 2521
1.4848 G-X40 CrNiSi 25 20
1.4849 G-X15 CrNiSi 25 20
Welding of joints on steels of identical or similar types; austenitic weld metal, heat-resistant up to 1200 °C; especially well suited for use on components exposed to oxidising gases which contain nitrogen, but very little oxygen; not suited for use in the temperature range from 650 to 900 °C because of embrittlement risk; adjustment of preheating and interpass temperatures necessary for matching the base metal