1. Forged grinding media ball

Chemical composition of forging steel balls
Brand | Materials | C% | Si% | Mn% | P% | S% | Cr% | Ni% | Cu% |
JC-1 | B2 | 0.7-0.85 | 0.17-0.37 | 0.7-1.00 | ≤0.035 | ≤0.035 | 0.50-0.60 | ≤0.20 | ≤0.20 |
JC-2 | B2-1 | 0.55-0.7 | 0.15-0.30 | 0.65-0.85 | ≤0.020 | ≤0.020 | 0.70-1.10 | ≤0.20 | ≤0.20 |
JC-3 | B3 | 0.58-0.66 | 1.70-1.90 | 0.68-0.80 | ≤0.030 | ≤0.030 | 0.78-0.90 | ≤0.20 | ≤0.20 |
JC-4 | B4 | 0.65-0.75 | 1.20-1.40 | 0.50-0.70 | ≤0.025 | ≤0.025 | 0.85-1.00 | / | ≤0.25 |
JC-5 | B6 | 0.75-0.9 | 0.17-0.37 | 0.8-1.02 | ≤0.035 | ≤0.035 | 0.88-0.98 | ≤0.25 | ≤0.25 |
JC-6 | B6-1 | 0.82-0.9 | 0.15-0.35 | 0.90-1.05 | ≤0.020 | ≤0.020 | 0.88-0.98 | ≤0.25 | ≤0.25 |
JC-7 | BU | 0.95-1.05 | 0.15-0.35 | 0.95-1.05 | ≤0.025 | ≤0.025 | 0.45-0.55 | ≤0.06 | ≤0.15 |
JC-8 | 1090 | 0.9-1.1 | 0.17-0.37 | 0.60-0.90 | ≤0.025 | ≤0.025 | ≤0.025 | ≤0.02 | ≤0.02 |
JC-9 | 42CrMo | 0.38-0.45 | 0.20-0.40 | 0.50-0.80 | ≤0.035 | ≤0.035 | 0.90-1.20 | / | / |
JC-10 | 40Cr | 0.37-0.45 | 0.20-0.40 | 0.50-0.80 | ≤0.035 | ≤0.035 | 0.80-1.10 | / | / |
JC-11 | 65MN | 0.62-0.7 | 0.17-0.37 | 0.90-1.20 | ≤0.035 | ≤0.035 | ≤0.25 | / | / |
JC-12 | 60MN | 0.57-0.65 | 0.17-0.37 | 0.70-1.00 | ≤0.035 | ≤0.035 | ≤0.25 | ≤0.25 | / |
JC-13 | 50MN | 0.48-0.56 | 0.17-0.37 | 0.70-1.00 | ≤0.035 | ≤0.035 | ≤0.25 | ≤0.25 | / |
Nominal diameter | Diameteical Tolerance | Weight of single ball in average | Surface hardness | Impact toughness |
(mm) | (mm) | (G) | (HRC) | (J/c) |
Ф20 | +2 -1 | 32 | >60 | ≥12 |
Ф25 | 64 | |||
Ф30 | 110 | |||
Ф40 | 263 | |||
Ф50 | 513 | |||
Ф60 | +3 -2 | 888 | ||
Ф70 | 1410 | |||
Ф80 | 2104 | |||
Ф90 | 2996 | |||
Ф100 | +4 -2 | 4110 | ||
Ф110 | 5457 | |||
Ф120 | 7102 | >58 | ||
Ф130 | 9030 | |||
Ф140 | +4 -3 | 11278 | >55 | |
Ф150 | 13871 |
2. Casting grinding media ball:

Chemical Components | ||||||||
Type | Chemical components | |||||||
C | Si | Mn | Cr | Mo | Cu | P | S | |
Low-Cr | 2.0-3.0 | ≤1.5 | 0.3-1.5 | 1-3 | ≤1.0 | ≤0.8 | ≤0.10 | ≤0.10 |
Medium-Cr | 2.0-3.0 | ≤1.2 | 0.3-1.5 | 4-9 | ≤1.5 | ≤0.8 | ≤0.10 | ≤0.10 |
High-Cr | 2.0-3.0 | ≤1.2 | 0.3-1.5 | 10-18 | ≤1.0 | ≤1.2 | ≤0.10 | ≤0.06 |
Superhigh-Cr | 2.0-3.0 | ≤1.2 | 0.3-1.5 | 19-35 | ≤2.0 | ≤1.2 | ≤0.10 | ≤0.06 |
Mechanical Properties and Microstructure | ||||
Type | Hardness | Falling times | Microstructure | Impact Toughness |
Low-Cr | ≥45 | ≥8000 | M+C | ≥5 |
Medium-Cr | ≥50 | ≥12000 | M+C | ≥5 |
High-Cr | ≥58 | ≥15000 | M+C | ≥5 |
Superhigh-Cr | ≥60 | ≥22000 | M+C | ≥5 |
P-Pearlite C-Carbide M-Martensite |
3. Four Major Advantages Stronger and More Wearable
(1)Customized Raw Materials
(2)Advanced Full-automatic Production Line
(3)Unique Heat Treatment Technology
(4)Rigorous Quality Control System
4. Company profile:
1 Established in 1995,is the biggest and most specialized casting and forged products manufacturers.
2 Annual production capacity is over 100,000 tons.
3 We have been equipped with advanced automatic production lines.
4 Our company has been accredited with ISO9001 Quality Certification,ISO45001 Occupational health and safety certification and ISO14001 environmental management system certification.
5 Our clients are from all over the world,such as Australia,South Africa,Ghana,Korea,Canada,USA etc.
5. .Packing of Products:

