MARVALX12 Stainless steels with structural hardening

  • Aerospace
  • Defense

Spécifications

  • EU
    X1CrNiMoAlTi12-9
  • USA
    UNS:S11800

Typical composition

  • C
    < 0.02
  • Ni
    9
  • Cr
    12
  • Mo
    2
  • Ti
    0,3
  • Al
    0,7

Applications

• Heavily stressed parts requiring good corrosion resistance and very good mechanical properties.
• Aerospace industry.
• Marine applications.
• Autoclaves and pressure chambers.

Mechanical properties

• Precipitation hardened stainless steel of very high purity, vacuum melted and consumable electrode remelted.
• Excellent mechanical properties in the longitudinal and transverse directions.
• Excellent balance between strength, toughness and fatigue properties, especially at the 1200 N/mm2 strength level (>PH13-8Mo).
• Good resistance to corrosion and stress corrosion.
• Good weldability.

Mechanical features

  • Heat treatment
    H + V 555°C
    H + V 520°C
  • UTS (N/mm²)
    1240
    1430
  • A (%)
    12,5
    10,5
  • KV -60°C (J)
    120
    45
  • Solution treated : H
    Annealed : R
  • Thermo-mechanical treatment : TM
    Quenched and tempered : T+RV
  • Sub-zero treatment : F
    Solution treated and aged : T+RV
MARVALX12_FR
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See also

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