18Ni 300 maraged steel forging bar

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11-May-2024

Name:18Ni 300 maraged steel forging

1.Round bar wire diameter:5.5-1000mm.
2.plate/sheet thickness:1-400mm.
3.forgings weight:0.5-30000Kg.
4. pipe OD:6-3500mm

18Ni 300 maraged steel forging chemical composition：

C	Si	Mn	S	P	Co	Ni	Mo	Ti	Al
≤0.03	≤0.10	≤0.10	≤0.010	≤0.010	8~9.5	18.0~19.0	4.6~5.2	0.55~0.80	.0.05~0.15

Marage 300 is an age- hardenable (maraging) iron-nickel steel combining ultra-high strength, toughness and resistance to crack propagation. The alloy is well suited to applications where heat treatment distortion and dimensional changes must beminimized and where high fracture toughnessis required such as rocket motor casings, light aircraft landing gear, power shafts and low temperature tooling.

The 18% nickel maraging steels offer a unique combination of properties not available from conventional low alloy ultra high strength steels. They offer high strength, high ductility and toughness, and resistance to crack propagation. Hardening isaccomplished by a simple aging cycle of 3 hours at 900°F (482°C) followed by air cooling. The 18%Ni /Marage 300 provides through hardening without quenching, freedom from decarburization, minimal distortion during aging,good formability, machinability, and weldability and a low coefficient of thermal expansion.