60-65HRC 80mm grinding steel ball for ball mill
Huafu Group is located in Zhangqiu City, Shandong Province, 45 Kilometers to the Jinan downtown, next to the 309 National Highway, enjoying firsthand Information and convenient traffic. Our company covers 80000 square meters, with over 100 employees, annual production capacity of 100000 tons and registered capital of seventy million yuan. The group company consists of Jinan Huafu Forging Co.,Ltd,Shandong Huafu Steel Ball Co.,Ltd and Jinan Xing Tigers of Papermaking Machinery Co.,Ltd.We mainly produces forged steel balls, cast iron balls, steel cylpebs, grinding rods, mill liners, steel, hammer heads, automatic production lines for steel balls & grinding rods, decorative wrought iron products and paper-making machinery. Our products having been produced strictly according to the ISO9001:2015 quality standard and are mainly used in mines, cement plants, building materials, power stations, chemical industry and steel mills, Well sold across China and exported to the United States, Chile, the UK, Brazil, South Africa, Australia, South Korea, India, Russia, Mexico, Malaysia, Laos, Vietnam and other dozens of countries and regions, our products got highly appreciated by our customers.
Huafu Group is located in Zhangqiu City, Shandong Province, 45 Kilometers to the Jinan downtown, next to the 309 National Highway, enjoying firsthand Information and convenient traffic. Our company covers 80000 square meters, with over 100 employees, annual production capacity of 100000 tons and registered capital of seventy million yuan. The group company consists of Jinan Huafu Forging Co.,Ltd,Shandong Huafu Steel Ball Co.,Ltd and Jinan Xing Tigers of Papermaking Machinery Co.,Ltd.We mainly produces forged steel balls, cast iron balls, steel cylpebs, grinding rods, mill liners, steel, hammer heads, automatic production lines for steel balls & grinding rods, decorative wrought iron products and paper-making machinery. Our products having been produced strictly according to the ISO9001:2015 quality standard and are mainly used in mines, cement plants, building materials, power stations, chemical industry and steel mills, Well sold across China and exported to the United States, Chile, the UK, Brazil, South Africa, Australia, South Korea, India, Russia, Mexico, Malaysia, Laos, Vietnam and other dozens of countries and regions, our products got highly appreciated by our customers.


Diameter:80mm
1. Diameter tolerance and roundness
| Diameter | 30 | 40 | 50 | 60 | 70 | 80 | 90 | 100 | 110 | 120 | 125 | 150 |
| (mm)Tolerance | ±2 | +3,-2 | +4,-3 | +5,-4 | ||||||||
| (%)Roundness | ≤2 | ≤3 | ≤4 | ≤5 | ||||||||
2Chemical composition
| Brand | C(%) | Si(%) | Mn(%) | Cr(%) | Cu(%) | Mo(%) | P(%) | S(%) | Ni(%) |
| 45# | 0.42-0.50 | 0.17-0.37 | 0.5-0.80 | 0-0.25 | 0-0.25 | 0-0.30 | 0-0.035 | 0-0.035 | 0-0.30 |
| 50Mn | 0.48-0.56 | 0.17-0.37 | 0.60-1.0 | 0-0.25 | 0-0.25 | 0-0.30 | 0-0.035 | 0-0.035 | 0-0.30 |
| 60Mn | 0.57-0.65 | 0.17-0.37 | 0.70-1.0 | 0-0.25 | 0-0.25 | 0-0.30 | 0-0.035 | 0-0.035 | 0-0.30 |
| 65Mn | 0.62-0.70 | 0.17-0.37 | 0.90-1.0 | 0-0.25 | 0-0.25 | 0-0.30 | 0-0.035 | 0-0.035 | 0-0.30 |
| U71MN | 0.65-0.76 | 0.17-0.37 | 1.10-1.40 | 0-0.25 | 0-0.25 | 0-0.30 | 0-0.035 | 0-0.035 | 0-0.30 |
| 40Cr | 0.37-0.45 | 0.17-0.37 | 0.50-0.8 | 0.80-1.1 | 0-0.25 | 0-0.30 | 0-0.035 | 0-0.035 | 0-0.30 |
| 42CrMo | 0.38-0.45 | 0.17-0.37 | 0.50-0.80 | 0.90-1.2 | 0-0.03 | 0.15-0.25 | 0-0.035 | 0-0.035 | 0-0.30 |
| 70Cr2 | 0.65-0.75 | 0.20-0.30 | 0.75-0.90 | 0.55-0.70 | 0-0.25 | 0-0.30 | 0-0.030 | 0-0.030 | 0-0.30 |
| 40Mn2 | 0.37-0.44 | 0.17-0.37 | 1.4-1.8 | 0-0.25 | 0-0.25 | 0-0.30 | 0-0.035 | 0-0.30 | 0-0.30 |
| B-2 | 0.70-0.80 | 0.17-0.37 | 0.70-0.80 | 0.40-0.60 | 0-0.25 | 0-0.30 | 0-0.035 | 0-0.035 | 0-0.30 |
| B-3 | 0.58-0.66 | 1.2-1.6 | 0.65-0.80 | 0.70-0.90 | 0-0.25 | 0-0.30 | 0-0.035 | 0-0.035 | 0-0.30 |
| B-4 | 0.60-0.65 | 1.6-1.7 | 0.7-0.8 | 0.7-0.8 | 0-0.25 | 0-0.30 | 0-0.035 | 0-0.035 | 0-0.30 |
| B-6 | 0.75-0.85 | 0.2-0.40 | 0.9-1.0 | 0.85-0.95 | 0-0.25 | 0.06-0.13 | 0-0.035 | 02-0.035 | 0.06-0.13 |
| B-6A | 0.82-0.95 | 0.20-0.40 | 0.92-1.02 | 0.80-0.95 | 0-0.25 | 0.06-0.10 | 0-0.035 | 0-0.035 | 0.06-0.10 |
| B-7 | 0.35-0.40 | 0.17-0.37 | 0.7-0.8 | 0.9-1.0 | 0-0.25 | 0-0.30 | 0-0.035 | 0-0.035 | 0-0.30 |
| BU | 0.95-1.05 | 0.17-0.37 | 0.9-1.10 | 0.40-0.60 | 0-0.15 | 0-0.05 | 0-0.035 | 0-0.035 | 0-0.30 |
| Gr15 | 0.95-1.05 | 0.15-0.35 | 0.20-0.40 | 1.30-1.65 | 0-0.25 | 0-0.10 | 0-0.027 | 0-0.020 | 0-0.10 |
3.Technical specification
|
Brand |
Breakage rate |
Hardness (HRC) |
Impact value (J/cm²) |
Drop times |
Micro structure |
| 45# | <1% | ≥45 | ≥12 | ≥8000 | M+C |
| 50Mn | <1% | ≥55 | ≥12 | ≥10000 | M+C |
| 60Mn | <1% | ≥55 | ≥12 | ≥12000 | M+C |
| 65Mn | <1% | ≥58 | ≥12 | ≥12000 | M+C |
| U71MN | <1% | ≥58 | ≥12 | ≥12000 | M+C |
| 40Cr | <1% | ≥55 | ≥12 | ≥12000 | M+C |
| 42CrMo | <1% | ≥55 | ≥12 | ≥12000 | M+C |
| 70Cr2 | <1% | ≥58 | ≥12 | ≥12000 | M+C |
| 40Mn2 | <1% | ≥55 | ≥12 | ≥12000 | M+C |
| B-2 | <1% | ≥58 | ≥12 | ≥15000 | M+C |
| B-3 | <1% | ≥60 | ≥12 | ≥15000 | M+C |
| B-4 | <1% | ≥60 | ≥12 | ≥15000 | M+C |
| B-6 | <1% | ≥60 | ≥12 | ≥15000 | M+C |
| B-6A | <1% | ≥60 | ≥12 | ≥15000 | M+C |
| B-7 | <1% | ≥60 | ≥12 | ≥15000 | M+C |
| BU | <1% | ≥60 | ≥12 | ≥15000 | M+C |
| Gr15 | <1% | ≥60 | ≥12 | ≥15000 | M+C |


1.Bag:diameter17-150mm 1000kg/bag
2.Drum:diameter17-25mm 1000kg/drum
diameter30-50mm 950kg/drum
diameter60-70mm 900kg/drum
diameter80-90mm 850kg/drum
diameter100-150mm 800kg/drum
20feet container:25bags or 25-32drums
40feet container:27bags or27-34drums



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