RW 307 - Nr.1.4370

RW 307 - Nr.1.4370Steel

RW 307 / RW 307L / RW 307SI Stainless Welding Wire: Austenitic Stainless Welding Wires for Manganese and Dissimilar Steels

RW 307 / RW 307L / RW 307SI is a fully austenitic stainless welding wire class for manganese steels, armor steels and dissimilar carbon or low-alloy steels.

Common Use Used for buffer layers and buttering before hard-facing when a ductile weld metal with high hot-cracking resistance is required.
Low-Carbon Version RW 307L is preferred when a lower carbon level is needed compared with RW 307.
Silicon Addition RW 307SI improves weld-pool fluidity and reduces spatter.

RW 307 / RW 307L / RW 307SI Stainless Welding Wire: References and Comparable Standards

Stainless welding wires references and comparable standards
Product Nominal Composition EN ISO 14343-B: 2017 AWS A5.9-2017
Alloy Designation
DIN Werkstoff Nr.
RW 307 18 8 Mn - - 1.4370
RW 307L 18 8 Mn - - 1.4370
RW 307SI 18 8 Mn - - 1.4370

RW 307 / RW 307L / RW 307SI Stainless Welding Wire: Chemical Composition (Cast Analysis) (%)

Stainless welding wires chemical composition values
Element RW 307 RW 307L RW 307SI
C ≤ 0,08 % ≤ 0,05 % ≤ 0,10 %
Mn 5,00-8,00 % 5,00-8,00 % 5,00-8,00 %
Si ≤ 0,50 % 0,30-0,70 % 0,65-1,00 %
S ≤ 0,030 % ≤ 0,030 % ≤ 0,030 %
P ≤ 0,030 % ≤ 0,030 % ≤ 0,030 %
Cr 17,0-20,0 % 17,0-20,0 % 17,0-20,0 %
Ni 7,0-10,0 % 7,0-10,0 % 7,0-10,0 %
Mo ≤ 0,30 % ≤ 0,30 % ≤ 0,30 %
Cu ≤ 0,30 % ≤ 0,30 % ≤ 0,30 %
N - - -
Nb - - -
Ti - - -
Published: 01 January 2025 | Last Updated: 08 June 2026
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Published: 01 January 2025 | Last Updated: 08 June 2026
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