About Smiths

We are a world-class supplier of engineering raw materials. Our objective is to provide all our customers, from the small machine shop to the large multi-national corporation, a supply path that continuously delivers the highest levels of service, quality and value.

Maraging Steel 200

Maraging Steel

C200 Maraging Steel

C200 - a maraging alloy steel containing 8.5% cobalt and 3.3% molybdenum.


This steel is produced by vacuum arc re-melting to provide high strength although this is still low when compared with other maraging steels, nominally 200 ksi tensile (1380 MPa) 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. C200 is usually supplied in the annealed condition where the microstructure consists of fine martensite before final heat treatment.

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. C200 steel has good weldability.

Typical Applications

Commercial applications for this engineering material include:

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

We stock C200 in round bar.

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.

Additional Info

A technical datasheet for C200 is available in PDF file format. To view and download, please click here.

We offer in-house processing options - for more information, please refer to our processing services.

Read our corporate brochure by clicking here.

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