Maraging steels

MY19

Spécifications

Common name
Maraging 300
EU
X2NiCoMo18-9-5
USA
UNS: K93120
AMS
6514
WL
1.6354
1.6358

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.

Characteristics

• 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 properties

Heat
treatment
UTS
(N/mm²)
0,2%
YS
(N/mm²)
A
(%)
KV
(J)
H 1070 870 14
H + V 480°C205019808.525

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

See also

MARVAL18

Maraging steels

MLX19

Stainless steels with structural hardening

MLX17

Stainless steels with structural hardening