- Contact Person : Mr. Zhang Jingping
- Company Name : Shandong Yafeite Metal Products Co., Ltd.
- Tel : 0086-0531-87170006
- Fax : 0086-0531-88346266
- Address : Shandong,Ji'nan,Ji'nan City huaiyin District After seven road No. 669
- Country/Region : China
- Zip : 250000
forged grinding steel balls 50Mn
Forged grinding steel balls
Type and Chemical composition of Forged steel balls
Name | C | Mn | Si | Cr | S | P | V |
50MN | 0.48-0.56 | 0.70-1.0 | 0.17-0.37 | 0.25 max | 0.035max | 0.035max | |
60MN | 0.57-0.65 | 0.70-1.0 | 0.17-0.37 | 0.25 max | 0.035max | 0.035max | |
65MN | 0.60-0.70 | 0.90-1.20 | 0.17-0.37 | 0.25 max | 0.035max | 0.035max | |
75MnCr | 0.70-0.85 | 0.7-0.8 | 0.17-0.37 | 0.2-0.7 | 0.03 max | 0.03 max | |
75 SiMn | 0.70-0.90 | 0.7-1.2 | 0.4-0.8 | 0.25 max | 0.03 max | 0.03 max | |
Wear-resistant Alloy | 0.5-0.65 | 0.4-1.0 | 1.4-1.8 | 0.9-1.2 | 0.03 max | 0.03 max | 0.1-0.2 |
Physical Property of Forged Balls
Name | Impact Test AK.J/cm2 | Endurance Test Times (5m) | Dia 25mm-60mm | Dia 70mm-100mm | ||
Surface | Core | Surface | Core | |||
50MN | ≥12 | ≥10000 | ≥56 | ≥35 | ≥56 | ≥28 |
60MN | ≥13 | ≥10000 | ≥58 | ≥38 | ≥58 | ≥29 |
65MN | ≥15 | ≥12000 | ≥60 | ≥42 | ≥60 | ≥30 |
75MnCr | ≥17 | ≥12000 | ≥60 | ≥52 | ≥60 | ≥50 |
75 SiMn | ≥16 | ≥12000 | ≥60 | ≥50 | ≥60 | ≥48 |
Wear-resistant Alloy | ≥17 | ≥12000 | ≥60 | ≥54 | ≥60 | ≥52 |
Weight and Microstructure of Forged Balls
Nominal diameter | Diametrical Tolerance(mm) | Approx. weight per ball(g) | Average number per MT | Microstruture |
25mm | +1.5/-0.5 | 64 | 15625 | BATTEN M+LITTLR B+ LITTLE C(M-Martensite, B-bainitic, C-Carbide) |
30mm | +1.5/-0.5 | 110 | 9090 | |
40mm | +2.0/-1.0 | 260 | 3846 | |
50mm | +2.0/-1.0 | 510 | 1961 | |
60mm | +3.0/-2.0 | 890 | 1124 | |
70mm | +3.0/-2.0 | 1400 | 714 | |
80mm | +3.0/-2.0 | 2100 | 476 | |
90mm | +3.0/-2.0 | 3000 | 333 | |
100mm | +4.0/-3.0 | 4100 | 244 | |
110mm | +4.0/-3.0 | 5470 | 283 | |
120mm | +4.0/-3.0 | 7100 | 141 | |
130mm | +4.0/-3.0 | 9020 | 111 |
forged grinding steel balls 50Mn
