Grade

ISO Code

Density g/cm

HRA

T.R.S MPα N/mm

Performance & application recommended

SK6A

K10

14.7-15.1

91-91.5

1750-1850

Good hardness and wear resistant. Suitable for semi-finishing hard cast iron, steel and non-ferrous metals, to be make of wear resistant parts Formation cutting tools and so on.

SK8

K20

14.5-14.9

89-89.5

2000-2300

Strength, impact resistance and toughness are better than SK6A. Suitable for processing cast iron, non-ferrous metals and non-metallic materials. Can be made of wear parts.

SK11

K30

14-14.4

88-88.5

2300-2500

Higher strength, abrasion resistance inferior SK8. Suitable for make of metals, non-metallic powder molding mold, low load impact mold and wear-resistant parts.

SK15

K40

13.9-14.2

87-87.5

2400-2600

High strength, impact resistance and toughness, but wear resistant inferior. Suitable for make of stamping dies.

SK20

K40

13.4-13.6

85-85.5

2500-2800

High strength. Suitable for make of high load stamping dies.

SF23

P30

12.6-12.9

82.5-83

2800-3200

High strength. Suitable for make of stamping dies,impact extrusion female die.