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1.Chemical composition:
NAME | C | Si | Mn | Cr | Mo | CU | P | S | Hardness |
LOW CHROMIUM | 2.2-3.5 | ≤ 1.2 | ≤ 1.5 | 0.8-3.5 | ≤ 1.0 | ≤ 0.5 | ≤ 0.15 | ≤ 0.15 | ≥45 |
MEDIUM CHROMIUM | 2.0-3.3 | ≤ 1.2 | ≤ 1.8 | 4.0-9.0 | ≤ 1.5 | ≤ 1.0 | ≤ 0.15 | ≤ 0.15 | ≥50 |
HIGH CHROMIUM | 1.6-3.3 | ≤ 1.0 | ≤ 2.5 | 10-18 | ≤ 1.0 | ≤ 1.5 | ≤ 0.10 | ≤ 0.10 | ≥55 |
HIGHER CHROMIUM | 2.0-3.3 | ≤ 1.0 | ≤ 2.5 | 22-25 | ≤ 2.0 | ≤ 1.5 | ≤ 0.10 | ≤ 0.10 | 60≥ |
2.Specification and Hardness of Grinding steel Balls
Nominal diameter (mm) | Weight of Single of casting ball in average(kg) | Number of piece of One ton forging ball in average | Surface hardness | Impact toughness |
DIA 10 DIA 12 DIA 15 DIA 20 DIA 25 DIA 30 DIA 40 DIA 50 |
0.0135 0.0181 0.0242 0.0322 0.063 0.11 0.257 0.50 |
74073 55248 41322 31056 15873 9091 3891 2000 | 45-60 | ≥12 |
DIA 60 DIA 70 DIA 80 DIA 90 DIA 100 | 0.867 1.37 2.05 2.90 4.00
| 1153 729 487 345 250 | ||
DIA 110 DIA 120 DIA 125 | 5.30 6.80 7.75 | 188 147 129 | ||
DIA 130
| 8.74
| 114
|
3.production technics
Raw material (waste steel,waste iron) factory inspection - blending - melt- composition inspection- casting- cooling and solidification - demould - clean and polish-inspection-quenching- hardness inspection-tempering-inspection -warehousing
4.picture shows
5.packaging
we use white ton bags or steel drums to package them.
6.delivery time
usually 10 days for 25 tons order
diamer 10mm casting hyper chrome low price steel ball