Chemical composition of Gcr15 Bearing steel balls（AISI52100）

C

0.95% --1.10%

Si

0.15%--0.35%

Mn

0.50% max.

P

0.025% max.

S

0.025% max.

Cr

1.30% --1.60%

Inch Size

MM Size

Inch Size

MM Size

Inch Size

MM Size

Inch Size

MM Size

1/16

1.588

5/16

7.938

9/16

14.288

15/16

23.812

3/32

2.381

11/32

8.731

19/32

15.081

1

25.4

1/8

3.175

3/8

9.525

5/8

15.875

17/16

26.988

5/32

3.969

13/32

10.318

21/32

16.668

9/8

28.575

3/16

4.762

7/16

11.1125

11/16

17.462

19/16

30.162

7/32

5.556

29/64

11.509

23/32

18.256

5/4

31.75

15/64

5.953

15/32

11.906

3/4

19.05

21/16

33.338

1/4

6.35

31/64

12.303

25/32

19.844

11/8

34.925

17/64

6.747

1/2

12.7

13/16

20.638

23/16

36.512

9/32

7.144

17/32

13.494

7/8

22.225

3/2

38.1