??????????????????????

?????????????????

????????????

??????????????????

Co+Ni
%

WC
%

????????
HRA

??????????????????????? (???????? B) MPa

????????????????

?????????????????????? KN/mm2

g/cm3 ???????????vvv

hermal ????? Cal / ?????? ??. / ℃

YGH20

10

90

≥86.0

≥2500

3500

560

14.2~14.5

0.2

YGH25

12

88

≥84.0

≥2300

3400

550

14.0~14.3

0.21

YGH30

15

85

≥83.5

≥2520

3300

540

13.8~14.2

0.2

YGH40

18

82

≥83.0

≥2570

3200

500

13.4~13.9

0.19

YGH45

20

80

≥82.0

≥2570

3100

480

13.3~13.9

0.18

YGH55

26

74

≥81.0

≥2570

3000

450

12.6~13.2

0.17

YGR20

10

90

≥85.0

≥2400

3400

550

14.2~14.8

0.2

YGR25

12.5

87.5

≥83.0

≥2270

3300

540

14.0~14.3

0.22

YGR30

15

85

≥83.0

≥2360

3200

530

13.8~14.3

0.2

YGR40

18

82

≥82.0

≥2400

3200

430

13.5~13.9

0.2

YGR45

20

80

≥80.5

≥2250

3000

480

13.4~13.9

0.18

YGR55

25

75

≥79.0

≥2400

2800

420

12.9~13.40

0.17

YGR60

30

70

≥78.5

≥2200

2600

300

12.6~13.1

0.16