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Grade C250 Maraging SteelGrade C250

Maraging Steel

Type C250 cobalt containing grade of maraging steel, produced by vacuum arc re-melting, provides very high strength (nominally 250 ksi tensile) with an above average level of toughness.

The alloy retains its strength up to 450°C and good notch impact is maintained down to minus 50°C and below. This material may be nitrided. C250 is usually supplied in the annealed condition where the microstructure consists of fine martensite. This structure is then maraged (precipitation hardened) to achieve final properties employing a relatively low temperature that results in the required combination of high strength and toughness. The alloy has a density of 8.02 g/cc.

Machinability & Welding:

Maraging steels are usually machined in the annealed condition, however, they can be machined in the maraged condition. Components can be machined close to finished dimensions as the low temperature maraging treatment results in minimal distortion. In addition, the small contraction of approximately 0.05% due to maraging results in good dimensional stability.

C250 steel can be readily welded.

Technical Assistance

Our knowledgeable staff and resident metallurgists will be pleased to assist you further on any technical topic. Smiths Metal Centres Limited also boasts an in-house UKAS Accredited Testing Laboratory which is unique within the multi-metal and plastic stockholding sector. We believe this underlines our total commitment to quality and our ethos of being the complete service provider.



Download Grade C250 Maraging Steel Datasheet

Typical Applications:

  • Missile casings
  • Tooling
  • Ordnance mounting blocks
  • High performance autosport components
  • Couplings
  • Jet engine and helicopter drive shafts
  • Load cells


Grade C250 Maraging Steel is available in bar and forgings. We can also process the material for you, courtesy of 30 band saws available throughout the group which includes availablity and local service centre level.

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To find out more about Smiths Metal Centres range of high quality maraging steels, click on one of our products on the side menu of this web page.

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