武生特殊鋼材株式会社 日本語

Cobalt Special (CoSP®)

Cobalt Special (CoSP) is a super high-grade stainless steel for cutlery that provides outstanding corrosion resistance, wear resistance, grindability and workability achieved through a special remelting method that results in a uniform composition and fine dispersion of carbides.

It contains 1.1% carbon (C) and 16% chromium (Cr), exerting incomparable corrosion resistance*.
Tungsten (W) improves tempering resistance, molybdenum (Mo) contributes to further improvement of corrosion resistance, and vanadium (V) enables a finer microstructure. Cobalt (Co) strengthens the matrix and is effective in maintaining a long-lasting sharp edge. *According to our data.

The significant advantage of Cobalt Special is that the microstructure obtained by this exceptional steelmaking technique maximizes the effect of each added element.

C Cr Mo V W Co Hardness
Cobalt Special(CoSP®) 1.05 16.00 1.50 0.25 0.25 2.50 HRC60≦
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※The chemical composition values listed on this website are representative data for the standard values of each steel grade.