Grade

 ISO Code

Density g/cm3

Hardness HRA

TRS

N/mm2

Performance & application recommended

SK6A

K*0

*4.***5.1

****1.5

********0

Fine grain W-Co alloy, with high hardness and good wear-resistance, used for semi-finishing of hard cast iron, steels and non-ferrous metal, thereby made into forming cutters, wear-resistant parts, etc.

SK8

K*0

*4.***4.9

****9.5

********0

With better strength of use and toughness of shock resistance than SK6A, used for finishing cast iron, non-ferrous metal and nonmetallic materials, thereby made into tools, wear-resistant parts, etc.

SK*1

K*0

****4.4

****8.5

********0

With high strength of use, and wear resistance inferior to SK8, used for producing molding dies of metals, non-metallic powder, low-working-load stamping mould and wear-resistant parts.

SK*5

K*0

*3.***4.2

****7.5

********0

With high strength of use and toughness of shock resistance, used in broad range of plates of molding dies.

SK*0

K*0

*3.***3.6

****5.5

********0

With high strength and low wear resistance, used for producing high load stamping mould.

SF*3

*2.***2.9

*2.***3

********0

With high strength of use, generally used for producing stamping mould, stamping extrusion concave die, etc.