Material

C

Si

Cr

Mn

S

P

 Cr-22-32%

 2.0-2.8

≤1.0

22-32

0.5-2.0

≤0.06

≤0.08

 Cr-17-22%

 2.0-2.8

≤1.0

17-22

0.5-2.0

≤0.06

≤0.08

 Cr-15-17%

 2.2-3.0

≤1.0

15-17

0.5-2.0

≤0.06

≤0.08

 Cr-11-14%

 2.2-3.2

≤1.0

11-14

0.5-2.5

≤0.06

≤0.08

 Cr-5-10%

 2.1-3.2

≤1.2

 5-10

0.5-1.5

≤0.06

≤0.08

 Cr-1.5-3.%

 2.2-3.5

≤1.2

1.5-3.0

0.5-1.5

≤0.06

≤0.08

Material

Impact

Test

Ak.J/cm

Endurance

Test times

(5m)

Hardness  (HRC)

Diam25-60mm

Diam70-100mm

Quenching

Unquenching

Quenching

Unquench

ing

Cr-22-32%

≥4

≥10000

≥60

≥49

≥60

≥48

Cr-17-22%

≥4

≥10000

≥60

≥49

≥60

≥48

Cr-15-17%

≥4

≥10000

≥60

≥49

≥58

≥48

Cr-11-14%

≥3

≥10000

≥58

≥49

≥56

≥48

Cr-5-10%

≥3

≥8000

-

≥48

-

≥48

Cr-1.5-3.%

≥2

≥8000

-

≥48

-

≥45