Rope Ball(mm)

Wall Thickness(mm)

Weight(g)

Hardness(HRC)

Rabial load(Lbs)

Grade

440A-5/8

15.875+/-0.04

1.6

8±1

55-60

6000

G100

440A-3/4

19.05+/-0.04

1.6

12±1

55-60

6000

G100

440A-1

25.27+/-0.15

1.5

21±2

55-60

6000

G100

440A-1

25.4+/-0.04

1.4

20±1

55-60

6000

G100

440A-1 3/16

30.163+/-0.04

1.6

34±2

55-60

6000

G100

440A-1-1/4

31.75+/-0.04

1.6

36±2

55-60

6000

G100

440A-1-1/2

38.1+/-0.04

2.5

78±3

55-60

6000

G100

440A-1-3/4

44.45+/-0.04

2.5

108±4

55-60

6000

G100

440A-1-3/4

44.45+/-0.04

3

126±4

55-60

6000

G100

440A-2a

50+/-0.04

3

160±5

55-60

6000

G100

440A-2

50.8+/-0.04

3

168±5

55-60

6000

G100

Manganese

Silicon

Phosphorus

Sulfur

Chromium

Molybdenum

Nickel

0.60％-0.75％

1.00％

1.00％

0.04％

0.03％

16.0％-18.0％

0.75％

0.50％

Maximum

Maximum

Maximum

Maximum

Maximum

Maximum