China Grinding Media Ball for Mine Mills High Cr Cast Iron Grinding Balls Forged Ball, Find details about China 80mm Grinding Ball, Forged Steel Grinding Ball from Grinding Media Ball for Mine Mills High Cr Cast Iron Grinding Balls Forged Ball
Forged Steel Ball
Production Technology
Chemical components
Chemical Components | ||||||
Type | Chemical components | |||||
C | Mn | Si | Cr | S | P | |
45# | 0.42-0.48 | 0.50-0.80 | 0.17-0.37 | ≤0.25 | ≤0.035 | ≤0.035 |
50Mn | 0.48-0.56 | 0.70-1.00 | 0.17-0.37 | ≤0.25 | ≤0.035 | ≤0.035 |
60Mn | 0.57-0.65 | 0.70-1.00 | 0.17-0.37 | ≤0.25 | ≤0.035 | ≤0.035 |
65Mn | 0.62-0.70 | 0.90-1.20 | 0.17-0.37 | ≤0.25 | ≤0.035 | ≤0.035 |
B2 | 0.75-0.85 | 0.70-0.90 | 0.17-0.37 | 0.40-0.60 | ≤0.030 | ≤0.030 |
B3 | 0.55-0.65 | 0.75-0.90 | 0.20-0.37 | 0.85-1.20 | ≤0.030 | ≤0.030 |
B4 | 0.58-0.66 | 0.65-0.80 | 1.60-1.90 | 0.70-0.90 | ≤0.030 | ≤0.030 |
B6 | 0.97-1.03 | 1.00-1.10 | 0.20-0.30 | 0.50-0.60 | ≤0.025 | ≤0.025 |
Mechanical Properties | ||||||||
Material | Hardness(HRC) | Impact | Falling Times | |||||
Φ20-Φ50 | Φ60-Φ90 | Φ100-Φ150 | ||||||
Surface | Core | Surface | Core | Surface | Core | |||
45# | ≥54 | ≥36 | ≥54 | ≥34 | ≥52 | ≥30 | ≥15 | ≥22000 |
50Mn | ≥58 | ≥38 | ≥58 | ≥36 | ≥55 | ≥32 | ≥15 | ≥22000 |
60Mn | ≥60 | ≥42 | ≥60 | ≥40 | ≥58 | ≥36 | ≥15 | ≥22000 |
65Mn | ≥60 | ≥42 | ≥60 | ≥40 | ≥58 | ≥36 | ≥15 | ≥22000 |
B2 | ≥60 | ≥60 | ≥60 | ≥50 | ≥60 | ≥46 | ≥15 | ≥22000 |
B3 | ≥60 | ≥60 | ≥60 | ≥50 | ≥60 | ≥48 | ≥15 | ≥22000 |
B4 | ≥60 | ≥60 | ≥60 | ≥55 | ≥60 | ≥52 | ≥15 | ≥22000 |
B6 | ≥60 | ≥60 | ≥60 | ≥59 | ≥60 | ≥55 | ≥15 | ≥22000 |
Inch | Size | T weight | Tolerance(mm) | Material | Surface hardness(HRC) | Volume hardness(HRC) | |
3/4" | D20MM | 0.037+/-0.005 | 2+/-1 | B2 | 63-66 | 63-66 | |
1" | D25MM | 0.072+/-0.01 | 2+/-1 | B2 | 63-66 | 63-66 | |
11/4" | D30MM | 0.13+/-0.02 | 2+/-1 | B2 | 63-66 | 63-66 | |
11/2" | D40MM | 0.30+/-0.04 | 2+/-1 | B2 | 62-66 | 62-66 | |
2" | D50MM | 0.6+/-0.05 | 2+/-1 | B2 | 62-65 | 61-64 | |
21/2" | D60MM | 1.0+/-0.05 | 2+/-1.5 | B2 | 62-65 | 60-62 | |
21/2" | D65MM | 1.3+/-0.05 | 2+/-1.5 | B2 | 61-64 | 60-62 | |
21/2" | D65MM | 1.3+/-0.05 | 2+/-1.5 | B3 | 61-63 | 60-62 | |
3" | D75MM | 2.0+/-0.06 | 3+/-2 | B3 | 61-63 | 60-62 | |
3"(Hot rolled) | D80MM | 2.0+/-0.06 | 3+/-2 | B3 | 60-63 | 60-62 | |
3"(Forged) | D80MM | 2.1+/-0.06 | 3+/-2 | B3 | 60-62 | 53-57 | |
31/2" | D90MM | 3.0+/-0.07 | 3+/-2 | B3 | 60-63 | 59-62 | |
4" | D100MM | 4.1+/-0.15 | 3+/-2 | B3 | 60-63 | 59-62 | |
4.5" | D115MM | 6.3+/-0.15 | 3+/-2 | B3 | 60-63 | 57-60 | |
5" | D125MM | 8.1+/-0.3 | 3+/-2 | B3 | 59-62 | 55-60 |