MY19 Non stainless maraging steels

  • Defense

Spécifications

  • Common name
    Maraging 300
  • EU
    X2NiCoMo18-9-5
  • USA
    UNS:K93120

Typical composition

  • C
    ?0,010
  • Ni
    18
  • Mo
    4,9
  • Ti
    0,7
  • Co
    8,75
  • Al
    0,1

Applications

• Structural parts.
• Rocket motor bodies for missiles.
• Centrifuge components.

Mechanical properties

• Very low carbon maraging steel containing Ni, Co, Mo and Ti, vacuum melted and consumable electrode remelted.
• High proof stress and good toughness.
• Excellent weldability.

Mechanical features

Heat treatmentUTS (N/mm²)A (%)KV -60°C (J)
H107014
H + V 480°C20508,525
  • 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