Chinese

Grade

Equal to ISO Category Number

Chemical

Composition

Physical mechanical properties

Application

WC

Co

Density

Bend Strength

Hardness

%

%

g/Cm3

N/mm2

HRA

YG3

K01

96.5-97

3

14.9-15.3

≥1180

≥91.0

It is suitable for the finishing of cast iron, non-ferrous metals, alloys and non-metallic materials, and semi-finishing vehicles for intermittent cutting.

YG6X

K10

93.5

6

14.8-15.1

≥1420

≥92

Finishing of chilled hard alloy cast iron and heat resistant alloy steel and ordinary cast iron

YG6

K20

94

6

14.7-15.1

≥1600

≥91

Cast iron, non-ferrous metals and alloys, non-metallic materials, medium to cutting, semi-finishing and finishing.

YG8

K20-K30

92

8

14.5-14.9

≥1600

≥90

Suitable for casting of cast iron, non-ferrous metals and their alloys and non-metallic materials.

YG10

K40

90

10

14.3-14.7

≥1900

≥89

It is used for large batch production and has excellent strength and toughness.

YG10X

K40

89

10

14.3-14.7

≥2200

≥89.5

Suitable for small diameter micro drills, end mills, rotary boring tools, etc.

YG15

K30

85

15

13.9-14.2

≥2100

≥87

Forging, perforating and stamping tools for steel bars and steel tubes with high compression ratios and working under large stresses

YG20

K30

80

20

13.4-13.7

≥2500

≥85.5

Stamping die, stamping watch parts, musical instrument spring piece;

YG20C

K40

80

20

13.4-13.7

≥2200

≥82

Production of standard parts, bearings, tools and other industries for cold heading, cold punching, cold pressing die, warhead to the shell of the stamping die

YG30

70

30

12.75

≥2500

≥82.8

High toughness