Products

Stainless Steels for Welding

Stainless Welding Wire

Stainless welding wires are filler materials manufactured to a specified purity for joining stainless steels. They provide superior mechanical strength and corrosion resistance in MIG, TIG, electrode and submerged arc welding. Depending on requirements, they are selected in austenitic, martensitic, ferritic or duplex structures.

Standard Compliance They are developed to fully comply with all international standards, including European and American standards.

Approved Supply They have been supplied to leading electrode manufacturers across Europe, the United States and worldwide. They have passed the most demanding tests. They have also been approved by many international automotive manufacturers.

Certification They are certified by recognized organizations such as TÜV | DB (Germany), Controlas (the Netherlands), ABS (USA) and CWB (Canada).

Products

AWS Code

-

Product Code

RW 307SI

W.Nr.

1.4370

Description

RW 307Si is a high-silicon, fully austenitic stainless welding wire. It joins manganese, armor, and dissimilar carbon or low-alloy steels. It forms buffer layers and buttering beneath hardfacing when ductile, hot-cracking-resistant weld metal is required. Its silicon addition improves weld-pool fluidity and reduces spatter.

AWS Code

-

Product Code

RW 307SI

W.Nr.

1.4370

Description

RW 307Si is a high-silicon, fully austenitic stainless welding wire. It joins manganese, armor, and dissimilar carbon or low-alloy steels. It forms buffer layers and buttering beneath hardfacing when ductile, hot-cracking-resistant weld metal is required. Its silicon addition improves weld-pool fluidity and reduces spatter.

Data Sheet
AWS Code

ER308L | ER308L | ER308LSi | ER308H

Product Code

RW 308L | RW 308LAWS | RW 308LSI | RW 308H

W.Nr.

1.4316

Description

RW 308 series welds austenitic stainless steels. RW 308L and RW 308LAWS reduce grain-boundary chromium carbide precipitation through their low carbon levels. This supports corrosion resistance. RW 308LSi improves arc stability, penetration, fluidity, and bead appearance. RW 308H suits applications requiring creep strength and high-temperature performance.

AWS Code

ER308L | ER308L | ER308LSi | ER308H

Product Code

RW 308L | RW 308LAWS | RW 308LSI | RW 308H

W.Nr.

1.4316

Description

RW 308 series welds austenitic stainless steels. RW 308L and RW 308LAWS reduce grain-boundary chromium carbide precipitation through their low carbon levels. This supports corrosion resistance. RW 308LSi improves arc stability, penetration, fluidity, and bead appearance. RW 308H suits applications requiring creep strength and high-temperature performance.

Data Sheet
AWS Code

ER309L | ER309Si | ER309LSi | ER309

Product Code

RW 309L | RW 309SI | RW 309LSI | RW 309LMO

W.Nr.

1.4332 | 1.4829 | 1.4459

Description

RW 309 series comprises stainless welding wires. They join stainless steels to carbon steels and other dissimilar materials. RW 309L supports corrosion resistance through its low carbon level. RW 309LSi improves fluidity, penetration, and bead appearance. RW 309Si suits heat-resistant steels and oxidizing gases, producing weld metal with approximately 8% ferrite. RW 309LMo targets improved pitting resistance in chloride environments through its molybdenum addition.

AWS Code

ER309L | ER309Si | ER309LSi | ER309

Product Code

RW 309L | RW 309SI | RW 309LSI | RW 309LMO

W.Nr.

1.4332 | 1.4829 | 1.4459

Description

RW 309 series comprises stainless welding wires. They join stainless steels to carbon steels and other dissimilar materials. RW 309L supports corrosion resistance through its low carbon level. RW 309LSi improves fluidity, penetration, and bead appearance. RW 309Si suits heat-resistant steels and oxidizing gases, producing weld metal with approximately 8% ferrite. RW 309LMo targets improved pitting resistance in chloride environments through its molybdenum addition.

Data Sheet
AWS Code

ER310

Product Code

RW 310

W.Nr.

1.4842

Description

RW 310 welds heat-resistant stainless steels containing approximately 25% Cr and 20% Ni. Its high chromium content provides good corrosion resistance at elevated temperatures. Its fully austenitic structure requires attention to hot-cracking sensitivity. Operation above 1000 °C is not recommended. Applications include industrial furnaces, annealing chambers, molten-salt plants, boiler components, and heat exchangers.

AWS Code

ER310

Product Code

RW 310

W.Nr.

1.4842

Description

RW 310 welds heat-resistant stainless steels containing approximately 25% Cr and 20% Ni. Its high chromium content provides good corrosion resistance at elevated temperatures. Its fully austenitic structure requires attention to hot-cracking sensitivity. Operation above 1000 °C is not recommended. Applications include industrial furnaces, annealing chambers, molten-salt plants, boiler components, and heat exchangers.

Data Sheet
AWS Code

ER312

Product Code

RW 312

W.Nr.

1.4337

Description

RW 312 joins dissimilar metals, including carbon steel to stainless steel. Its high-ferrite weld metal improves hot-cracking resistance. It helps preserve a dual-phase microstructure under high nickel dilution. It is unsuitable above 300 °C or for components requiring post-weld heat treatment.

AWS Code

ER312

Product Code

RW 312

W.Nr.

1.4337

Description

RW 312 joins dissimilar metals, including carbon steel to stainless steel. Its high-ferrite weld metal improves hot-cracking resistance. It helps preserve a dual-phase microstructure under high nickel dilution. It is unsuitable above 300 °C or for components requiring post-weld heat treatment.

Data Sheet
AWS Code

ER316L | ER316LSi | ER316H

Product Code

RW 316L | RW 316LAWS | RW 316LSI | RW 316H

W.Nr.

1.4430

Description

RW 316 series welds AISI 316/316L and similar molybdenum-alloyed stainless steels. It targets higher corrosion resistance than the 308L group. RW 316L and RW 316LAWS reduce grain-boundary chromium carbide precipitation through low carbon levels. They can also weld stainless steels containing niobium or titanium. RW 316LSi improves arc stability, fluidity, penetration, and bead appearance.

AWS Code

ER316L | ER316LSi | ER316H

Product Code

RW 316L | RW 316LAWS | RW 316LSI | RW 316H

W.Nr.

1.4430

Description

RW 316 series welds AISI 316/316L and similar molybdenum-alloyed stainless steels. It targets higher corrosion resistance than the 308L group. RW 316L and RW 316LAWS reduce grain-boundary chromium carbide precipitation through low carbon levels. They can also weld stainless steels containing niobium or titanium. RW 316LSi improves arc stability, fluidity, penetration, and bead appearance.

Data Sheet
AWS Code

ER317L

Product Code

RW 317LAWS

W.Nr.

-

Description

Used for welding metals of similar composition in environments containing high levels of acids and chlorides.

AWS Code

ER317L

Product Code

RW 317LAWS

W.Nr.

-

Description

Used for welding metals of similar composition in environments containing high levels of acids and chlorides.

Data Sheet
AWS Code

(ER318)

Product Code

RW 318SI

W.Nr.

1.4576

Description

Intended for chemical-industry applications requiring high corrosion resistance up to 400°C.

AWS Code

(ER318)

Product Code

RW 318SI

W.Nr.

1.4576

Description

Intended for chemical-industry applications requiring high corrosion resistance up to 400°C.

Data Sheet
AWS Code

ER347 | ER347Si

Product Code

RW 347 | RW 347SI

W.Nr.

1.4551

Description

Used for AISI 347, AISI 321 and similar Cr-Ni stainless steels stabilized with Nb, Ti or Ta.

AWS Code

ER347 | ER347Si

Product Code

RW 347 | RW 347SI

W.Nr.

1.4551

Description

Used for AISI 347, AISI 321 and similar Cr-Ni stainless steels stabilized with Nb, Ti or Ta.

Data Sheet
AWS Code

ER385

Product Code

RW 385

W.Nr.

-

Description

A stainless welding wire for applications requiring high corrosion resistance in sulfuric acid and chloride-containing environments.

AWS Code

ER385

Product Code

RW 385

W.Nr.

-

Description

A stainless welding wire for applications requiring high corrosion resistance in sulfuric acid and chloride-containing environments.

Data Sheet
AWS Code

ER2209

Product Code

RW 2209

W.Nr.

1.4462

Description

An austenitic-ferritic wire for welding duplex stainless steels. Provides high resistance to pitting/stress corrosion in chloride and H2S-containing environments (approximately 50 FN).

AWS Code

ER2209

Product Code

RW 2209

W.Nr.

1.4462

Description

An austenitic-ferritic wire for welding duplex stainless steels. Provides high resistance to pitting/stress corrosion in chloride and H2S-containing environments (approximately 50 FN).

Data Sheet
AWS Code

ER410 | ER410NiMo

Product Code

RW 410 | RW 410NIMO

W.Nr.

-

Description

A welding wire class for martensitic or ferritic-martensitic stainless steels and overlay applications on carbon or low-alloy steels.

AWS Code

ER410 | ER410NiMo

Product Code

RW 410 | RW 410NIMO

W.Nr.

-

Description

A welding wire class for martensitic or ferritic-martensitic stainless steels and overlay applications on carbon or low-alloy steels.

Data Sheet
AWS Code

-

Product Code

RW 4122

W.Nr.

1.4122

Description

A 17% Cr stainless welding wire for hardfacing and weld overlay applications.

AWS Code

-

Product Code

RW 4122

W.Nr.

1.4122

Description

A 17% Cr stainless welding wire for hardfacing and weld overlay applications.

Data Sheet
AWS Code

ER420 | (ER420)

Product Code

RW 420 | RW 420C

W.Nr.

1.4031

Description

A 13% Cr martensitic stainless welding wire class for similar stainless steels and hard, wear-resistant surface applications.

AWS Code

ER420 | (ER420)

Product Code

RW 420 | RW 420C

W.Nr.

1.4031

Description

A 13% Cr martensitic stainless welding wire class for similar stainless steels and hard, wear-resistant surface applications.

Data Sheet
AWS Code

ER430 | (ER430LNb)

Product Code

RW 430 | RW 430LNB | RW 430LNBTI

W.Nr.

1.4016 | 1.4511

Description

A ferritic stainless welding wire class for welding similar alloys, overlay applications and thermal spray use.

AWS Code

ER430 | (ER430LNb)

Product Code

RW 430 | RW 430LNB | RW 430LNBTI

W.Nr.

1.4016 | 1.4511

Description

A ferritic stainless welding wire class for welding similar alloys, overlay applications and thermal spray use.

Data Sheet

Published: 01 January 2025 | Last Updated: 31 July 2026