Maraging 250 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. We offer C250 in a variety of shapes and incremental sizes to choose from.

Excellent Strength Retention

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.

Typical Applications

Commercial applications for this engineering material include: