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 |
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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 |
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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 |