Grade

Density
g/cm³

T.R.S
MPa

Hardness
HRA

Performance & application recommended

Approx
Grades in
China

MK11

14.4

2420

88.5

Forming or stamping dies for metal powders and nonmetal powders.

YG11

MK15

14.0

2500

87.5

For fabricating drawing dies of steel tubes and rods under High compressibility ratio; punching, stamping, forging tools under large stress.

YG15

MG20

13.5

2800

85.5

For fabricating of stamping dies for watch parts, spring plates of musical instruments, battery jars, small sized steel balls, screws, screw caps.

YG20

MK05

14.9

2500

90.5

Mostly used as the buttons of small and mediumsized percussion bits and as the inserts of rotary prospecting bits to cut soft and medium hard formations.

YK05

MK8C

14.7

2400

88.5

YG8C

YM32

13.7

2800

84.5

Impact resistance forging dies.

YG16C

YM36

13.7

2800

84.5

Impact resistance forging dies, hot-press forging dies and rollers.

YG18C

YM40

13.5

2850

83.5

Dies for wear resistant or impact resistant application.

YG20C
ZL40.2

YM45

13.3

2900

83.0

Nut forming dies and high impact resistance forging dies.

YG22C
ZL40.5

YM50

13.1

2950

82．5

Stainless bolt header dies and rollers.

YG25C
ZL40B

YM90A

13.2

3200

82.0

Screw cap forming dies with high impact resistance (Highest impact resistance forging dies.)