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1.0546

S355NL

The 1.0546 (S355NL) is a normalized fine-grain structural steel: microalloyed with [[element:Nb|niobium]], [[element:V|vanadium]], or [[element:Ti|titanium]] to refine the grain and boost [[glossary:streckgrenze|yield strength]] plus good [[glossary:zaehigkeit|toughness]] — even at low temps. Typical analysis: 0.2 % C, 1.45 % Mn, 0.35 % Si. For higher [[glossary:verschleissschutz|wear protection]], three hard-facing options are available: S Fe 1 (martensitic, approx. 300–400 HB, machinable), S Fe 2 (wear-resistant and tough, approx. 50–55 HRC, conditionally machinable) and S Fe 15 ([[glossary:karbid|carbide]]-rich, approx. 55–65+ HRC, not machinable).

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