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Changzhou Huari Steel Ball Co., Ltd is an ISO9001: 2015 and IATF16949: 2016 certified professional manufacturer of steel balls with experience of more than 30 years. We owns more than 500 sets advanced production equipment and more than 100 sets of testing devices to ensure the quality of the steel balls.
Custom service to meet our customers' needs are our core strength.
Sizes & Material
The factory produces ball sizes from 0.5mm to 250mm.
Stainless steel balls: AISI304, 304L, 316, 316L, AISI420, 420C, 440, 440C(G10-G1000) .

| China | Japan | U.S. | Germany | Hardness |
| OCr18Ni9 | SUS304 | AISI304 | 1.4301 | HRC 25-39 |
| 00Cr19Ni10 | SUS304L | AISI304L | 1.4307 | HRC 25-39 |
| 0Cr17Ni12Mo2 | SUS316 | AISI316 | 1.4401 | HRC 25-39 |
| 0Cr19Ni12Mo2 | SUS316L | AISI316L | 1.4404 | HRC 25-39 |
| 3Cr13 | 420J2 | AISI420 | 1.4028 | HRC 48-58 |
| 4Cr13 | - | AISI420C | 1.3541, 1.4034 | HRC52-56 |
| 9Cr18 | - | AISI440 | HRC57-61 | |
| 9Cr18Mo | SUS440C | AISI440C | 1.4125 | HRC58-64 |
| Material | CHEMICAL COMPOSITION % | ||||||||
| C | Si | Mn | P | S | Ni | Cr | Mo | Ti | |
| AISI304 | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.03 | 8.0-11.0 | 18-20 | ||
| AISI304L | ≤0.03 | ≤1.0 | ≤2.00 | ≤0.045 | ≤0.03 | 9.0-12.0 | 18-20 | ||
| AISI316 | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.035 | ≤0.03 | 10.0-14 | 16.0-18.5 | 2.0-3.0 | |
| AISI316L | ≤0.030 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.03 | 10.0-14 | 16.0-18 | 2.0-3.0 | |
| AISI420(3Cr13) | 0.26-0.35 | ≤1.0 | Standard packing:
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