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RW 318Si - Nr.1.4576

RW 318Si - Nr.1.4576 Steel

RW 318Si Stainless Steel for Welding

RW 318Si is a stainless steel for welding, intended for chemical-industry applications requiring high corrosion resistance up to 400 °C. Its silicon addition supports weldability and weld-pool fluidity. Its niobium content supports stainless welding in chemical environments. It serves applications where corrosion resistance is the primary requirement.

RW 318Si 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 318Si 19 12 3 Nb Si - (ER318) 1.4576

RW 318Si Stainless Steel for Welding: Chemical Composition (Cast Analysis) (%)

Stainless welding wires chemical composition values
Element RW 318Si
C ≤ 0,08 %
Mn 1,00-2,50 %
Si 0,65-1,00 %
S ≤ 0,020 %
P ≤ 0,030 %
Cr 18,0-20,0 %
Ni 11,0-14,0 %
Mo 2,50-3,00 %
Cu ≤ 0,30 %
Nb 10xC-1,00 %
Published: 01 January 2025 | Last Updated: 06 August 2026
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Published: 01 January 2025 | Last Updated: 06 August 2026
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