Product Introduction
How a Ball is Made
Heading: In the first step, heading machines cut wire into short lengths and form it into spherical shapes between dies.
Deflashing: The flash line, a ridge left by the forming dies, is removed as balls roll between heavy, cast iron plates. Soft Grinding: Similar to deflashing, except that a grinding stone is used to improve precision.
Heat-treating: Carbon steel balls are next carburized and hardened. Heat treatment imparts the desired hardness and case depth.
Descaling: This step removes the residues and by-products from the heat-treating process. Hard Grinding: Slow, meticulous grinding assures proper sizing and sphericity, with tolerances as close as ±.0001″.
Lapping: Several proprietary lapping processes can bring balls to the requirements of ISO 3290 Grade 10 – 48. Finishing: Proprietary chemical and mechanical processes give the balls their final micro-smoothed finish, for increased wear resistance and product longevity.
Main Parameter
|
STAINLESS
STEEL
Ball
|
MARTENSITIC
|
US
|
Chemical Composition
|
|
AISINO.
|
Carbon
|
Silicon
|
Mangan-ese
|
Phos-phorous
|
Sulfur
|
Nickel
|
Chrome
|
Molyb-denum
|
|
AISI
|
0.09
|
1
|
1
|
0.04
|
0.03
|
|
11.5
|
|
|
410
|
0.15
|
Max
|
Max
|
Max
|
Max
|
13.5
|
|
AISI
|
0.26
|
10
|
1
|
0.04
|
0.03
|
|
12
|
|
|
420B
|
0.35
|
Max
|
Max
|
Max
|
Max
|
14
|
|
AISI
|
0.28
|
0.8
|
1
|
0.04
|
0.03
|
|
12
|
|
|
420
|
0.36
|
Max
|
Max
|
Max
|
Max
|
14
|
|
AISI
|
0.04
|
1
|
1
|
0.04
|
0.03
|
1
|
12
|
|
|
420C
|
0.5
|
Max
|
Max
|
Max
|
Max
|
Max
|
14
|
|
AISI
|
0.75
|
1
|
1
|
0.04
|
0.03
|
0.6
|
16
|
0.75
|
|
440B
|
0.95
|
Max
|
Max
|
Max
|
Max
|
Max
|
18
|
Max
|
|
AISI
|
0.95
|
1
|
1
|
0.04
|
0.03
|
0.6
|
16
|
0.4
|
|
440C
|
1.2
|
Max
|
Max
|
Max
|
Max
|
Max
|
18
|
0.8
|
|
AUSYENITIC
|
AISI
|
0.07
|
1
|
2
|
0.045
|
0.03
|
8
|
17
|
|
|
304
|
Max
|
Max
|
Max
|
Max
|
Max
|
10.5
|
19
|
|
AISI
|
0.03
|
1
|
2
|
0.045
|
0.03
|
8
|
18
|
|
|
304L
|
Max
|
Max
|
Max
|
Max
|
Max
|
12
|
20
|
|
AISI
|
0.07
|
1
|
2
|
0.045
|
0.03
|
10
|
16.5
|
2
|
|
316
|
Max
|
Max
|
Max
|
Max
|
Max
|
14
|
18.5
|
2.5
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
AISI
|
0.03
|
1
|
2
|
0.045
|
0.03
|
12
|
16.5
|
2
|
|
316L
|
Max
|
Max
|
Max
|
Max
|
Max
|
15
|
18.5
|
3
|
|
|
|
|
|
|
|
|
|
|
|
AISI
|
0.12
|
1
|
1
|
0.045
|
0.03
|
0.6
|
16
|
|
|
430
|
Max
|
Max
|
Max
|
Max
|
Max
|
Max
|
18
|
Figure Photos
B/L of The History Trading
