Forged Grinding Ball for Mining
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 |
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