Loading Port:Qingdao Port
Payment Terms:TT or LC
Min Order Qty:25M.T. m.t.
Supply Capability:200000M.T./Year m.t./month
Information About Cast Steel Grinding Ball With Supper Hardness Apply For All Kinds Of Mineral Processing
1) In general, forged steel ball has high hardness: surface hardness to 55-68 HRC, volume hardness of 50-63 HRC
2) Impact toughness high: impact toughness more than 12 J / cm2.
3) Broken rate is low: the actual broken rate is not higher than 1%.
4) Loss of grinding forged steel ball round rate is low.
National Standards Of Cast Steel Grinding Ball With Supper Hardness Apply For All Kinds Of Mineral Processing
Specification | 20 | 25 | 30 | 40 | 50 | 60 | 70 | 80 | 90 | 100 | 110 | 120 | 130 | 140 | 150 |
Chemical composition | C | Si | Mn | P | S | Cr | Ni | Cu | V | Ti | |||||
0.72- 0.95 | 0.50- 0.75 | 0.90 -1.20 | ≤0.035 | ≤0.035 | ≤0.25 | ≤ 0.30 | ≤ 0.25 | ≤ 0.01 | ≤ 0.01 | ||||||
Surface hardness | 55-64 | 54-62 | 50-60 | 50-58 | |||||||||||
Hardness of heart | ≥50 | ≥50 | ≥48 | ≥46 | |||||||||||
