X15U5W Stainless maraging steels

  • Aerospace

Spécifications

  • Common name
    15-5PH ; XM12
  • EU
    X5CrNiCu15-5
  • USA
    UNS:S15500

Typical composition

  • C
    < 0.07
  • Ni
    5
  • Cr
    15
  • Cu
    3
  • Nb
    0,3

Applications

• Forgings and mechanical parts in stainless steel requiring very good mechanical properties as well as good resistance to fatigue and sudden rupture.
Better coefficient of friction than austenitic stainless steels.

Mechanical properties

• Precipitation hardened martensitic stainless steel.
• Melting: consumable electrode remelted steel.
• Good mechanical properties in the longitudinal and transverse directions.
• Excellent toughness, ductility and fatigue properties.
• Good resistance to various corrosive agents.
• Good weldability.

Mechanical features

Heat treatmentUTS (N/mm²)A (%)KV -60°C (J)
H + V 550°C112015130
H + V 620°C95016160
  • Solution treated : H
    Annealed : R
  • Thermo-mechanical treatment : TM
    Quenched and tempered : T+RV
  • Sub-zero treatment : F
    Solution treated and aged : T+RV

See also