Jinan Zhongwei Casting And Forging Grinding Ball Co.,Ltd
Jinan Zhongwei Casting And Forging Grinding Ball Co.,Ltd 18 Years focus on development and production of grinding media Casting quality with strength, Forging glory with integrity
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cement plant use low price forged and low chrome cast grinding steel balls
Specification of forged steel ball and cast iron balls:
Type and chemical composition of forged balls
Name | Material | Chemical composition | Hardness | |||||
| C | Si | Mn | S | P | Cr | HRC | ||
forged ball | B3 | 0.58-0.66 | 1.6-1.9 | 0.65-0.8 | <0.025 | <0.025 | 0.7-0.9 | 58-63 |
| B2 | 0.72-0.85 | 0.17-0.37 | 0.7-1.0 | <0.04 | <0.04 | 0.4-0.6 | 58-63 | |
| 60Mn | 0.55-0.65 | 0.17-0.37 | 0.7-1.0 | <0.04 | <0.04 | <0.25 | 58-62 | |
| 45# | 0.42-0.50 | 0.17-0.37 | 0.5-0.8 | <0.035 | <0.035 | ≤0.25 | 50-55 | |
Hardness distribution
Material | Dia25mm-Dia50mm | Dia60mm-Dia90mm | Dia90mm-Dia125mm | |||
surface | core | surface | core | surface | core | |
| B3 | / | / | / | / | 56-63 | 45-53 |
| B2 | 60-65 | 58-62 | 58-63 | 50-55 | 56-60 | 40-45 |
| 60Mn | 58-63 | 55-60 | 58-63 | 40-45 | 56-60 | 30-35 |
| 45# | 55-58 | 45-55 | 55-58 | 30-35 | 50-55 | 25-30 |
Type and chemical composition of cast iron balls
Name | Material | Chemical composition | Hardness | |||||
| C | Si | Mn | S | P | Cr | HRC | ||
Cast ball | Special Hi-Cr | 2.0-3.0 | <1.0 | 0.5-2.0 | ≤0.06 | ≤0.08 | >20 | 58-64 |
Special Hi-Cr | 2.0-3.0 | <1.0 | 0.5-2.0 | ≤0.06 | ≤0.08 | >15 | 58-64 | |
High-Cr | 2.0-3.2 | <1.0 | 0.5-2.5 | ≤0.06 | ≤0.08 | >10 | 58-62 | |
Medium-Cr | 2.0-3.2 | <1.0 | 0.5-2.5 | ≤0.06 | ≤0.08 | ≥5 | 50-55 | |
Low-Cr | 2.2-3.4 | ≤1.2 | 0.5-1.5 | ≤0.06 | ≤0.08 | 1.0-1.5 | 42-46 | |
Hardness distribution
Material | Dia25mm-Dia50mm | Dia60mm-Dia70mm | Dia80mm-Dia90mm | |||
surface | core | surface | core | surface | core | |
Special hi-CR:>20 | 60-64 | 59-63 | 60-64 | 58-62 | 60-64 | 57-61 |
Special hi-CR:>15 | 58-62 | 57-61 | 58-62 | 56-60 | 58-62 | 50-59 |
High Cr:>10 | 58-62 | 57-61 | 58-62 | 56-60 | 58-62 | 50-59 |
Medium Cr:≥5 | 50-55 | 49-54 | 50-55 | 48-53 | 50-55 | 47-52 |
Low Cr:1-1.5 | 42-46 | 41-45 | 42-46 | 40-44 | 42-46 | 39-43 |
Certificate: ISO 9001:2008
Packaging & Shipping
Packing: Container bags or steel drums or others.
For Container Bag, Net weight 1000Kgs ,Gross Weight 1002KGS ,Measurement 0.4CBM
For Steel Drums ,Net weight 850-950Kgs ,Gross Weight 865-965KGS ,Measurement 0.3CBM .
Shipping and delivery
Port of loading:Qingdao Port,China
Delivery time : Normally 2-3 weeks after down payment received.
Partial shippment allowed