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1.4923

X22CrMoV12-1

The 1.4923 (X22CrMoV12-1) is a martensitic 9-%-chrome steel (P91/P92): extremely [[glossary:kriechen-warmfeste-staehle|creep]]-resistant up to over 600 °C for modern power plants. When welding, it's unforgiving—[[glossary:haerten|hardening]]- and [[element:H2|hydrogen]]-sensitive. Typical analysis: 0.22 % C, 0.3 % V, 12 % Cr, 0.6 % Mn, 1 % Mo, 0.6 % Ni, 0.3 % 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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