Grades table

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Stainless steels
  • Martensitic stainless steels
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    Déplier Déplier Déplier
    A&D Grade Specifications Chemical Composition Mechanical properties
    European standard USA Common designation C Ni Cr Mo Heat
    treatment
    UTS
    (N/mm²)
    0,2% YS
    (N/mm²)
    A
    (%)
    M30NW X4CrNiMoN21‑9‑4     ≤ 0.06 9.50 21.00 2.20 H 860 450 40
    X18PA X6CrNiTi18‑10 UNS: S32100
    AISI: 321
    321 < 0.08 11.00 18.00   H 600 220 50
    NYB66 X1CrNiMoWN24‑22‑6 UNS: S31266   < 0.03 22.00 24.00 5.50 H > 800 > 420 > 50
    Key to heat treatment symbols
    Solution treated H Annealed R
    Thermo-mechanical treatment TM Quenched and tempered T+RV
    Sub-zero treatment F Solution treated and aged H+V

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  • Stainless steels with structural hardening
  • Stainless steels for high temperatures