V155 is a copper-phase precipitation hardened martensitic stainless steel, which is used in the construction of propulsion systems of aviation-transported missiles due to its corrosion resistance and high mechanical properties up to 315 °C.

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Valbruna Grade Steel type W.N. AISI UNS EN
AEROVAL® § V155 Precipitation Hardening 1.4545 XM-12 S15500 X5CrNiCuNb15-5