MARVAL18 Maraging steels

Spécifications

Common name
Maraging 250
EU
X2NiCoMo18-8-5
USA
UNS:K92890

Typical composition

C
0,03
Ni
18
Mo
5
Ti
0,5
Co
8

Applications

• Aerospace industry:
High strength parts:
– Structural components
– Welded assemblies
– Deck landing hooks
– Rocket motor bodies
– Defence components
– Fasteners.

Mechanical properties

• Precipitation hardened, maraging type steel, vacuum melted and consumable electrode remelted.
• High yield strength and good impact strength.
• Good weldability.
• Surface hardening by nitriding is possible.

Mechanical features

Heat treatment	UTS (N/mm²)	A (%)	KCU (J/cm²)
H	1070	14	-
H + V 480°C	1850	9	40

Solution treated : H
Annealed : R
Thermo-mechanical treatment : TM
Quenched and tempered : T+RV
Sub-zero treatment : F
Solution treated and aged : T+RV

MARVAL18_GB

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See also

819AW

Through hardening steels

Gun barrels
Missiles
Plastic
Polishing
Transmission system

Spécifications

EU : 35NiCrMo16
USA : UNS : K57034

T + F + Rv 200°C
T + Rv 650°C

MLX17

Stainless steels with structural hardening

Aero engine
Aero structures
Blades
Chassis
Fasteners
Land turbine
Missiles
Shaft
tubes

Spécifications

EU : X1CrNiMoAlTi12-11-2
USA : UNS:S11000

H + V 510°C
H + V 535°C

MLX19

Stainless steels with structural hardening

Aero engine
Blades
Chassis
Fasteners
Land turbine
Landing gear
Missiles
tubes

Spécifications

EU : X1NiCrMoAlTi12-10-2
USA : UNS:S11902

H + V 490°C
H + V 510°C

MLX17

Stainless maraging steels

Aero engine
Aero structures
Blades
Chassis
Fasteners
Land turbine
Missiles
Shaft
tubes

Spécifications

EU : X1CrNiMoAlTi12-11-2
USA : UNS:S11000

H + V 510°C
H + V 538°C

MLX19

Stainless maraging steels

Aero engine
Blades
Chassis
Fasteners
Land turbine
Landing gear
Missiles
tubes

Spécifications

EU : X1NiCrMoAlTi12-10-2
USA : UNS:S11902

H + V 490°C
H + V 510°C