RW 307Si - Nr.1.4370
RW 307Si Stainless Steel for Welding
RW 307Si is a high-silicon, fully austenitic stainless steel for welding. 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.
RW 307Si Stainless Steel for Welding: 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 307Si |
18 8 Mn |
- |
- |
1.4370 |
RW 307Si Stainless Steel for Welding: Chemical Composition (Cast Analysis) (%)
Stainless welding wires chemical composition values
| Element |
RW 307Si |
| C |
≤ 0,10 % |
| Mn |
5,00-8,00 % |
| Si |
0,65-1,00 % |
| S |
≤ 0,030 % |
| P |
≤ 0,030 % |
| Cr |
17,0-20,0 % |
| Ni |
7,0-10,0 % |
| Mo |
≤ 0,30 % |
| Cu |
≤ 0,30 % |
Stainless welding wires chemical composition values
| Carbon |
≤ 0,10 % |
| Manganese |
5,00-8,00 % |
| Silicon |
0,65-1,00 % |
| Sulfur |
≤ 0,030 % |
| Phosphorus |
≤ 0,030 % |
| Chromium |
17,0-20,0 % |
| Nickel |
7,0-10,0 % |
| Molybdenum |
≤ 0,30 % |
| Copper |
≤ 0,30 % |
Published:
01 January 2025
|
Last Updated:
03 August 2026
