Professional manufacturer of grinding steel balls including casting grinding balls and forged grinding balls.
Size
Dia.20-150mm
Raw Material of casting grinding steel balls
Main material: Chrome alloyed steel
High Chrome: 10-26%
Medium Chrome: 3-6%
Low Chrome: 1-3%
C: 2.0-3.3%
Si: less than 1.2%
Mn: 0.3-1.5%
P: less than 1%
S: less than 0.06%
Characteristics of Casting Grinding Steel Balls
1. High hardness: 45-65HRC
2. High impact toughness: ≥2.5J/cm2
3. Low breakage: ≤1%
4. Drop Times: ≥10,000
5. Microstructure:
Low/medium chrome ball: P+C High chrome ball: M+C+A
M-Martensite P-Pearliet C-Carbide A-Austenite
Packing Information of Casting Grinding Steel Balls
Container Bag: Dia20mm-Dia150mm 1000Kgs/Container Bag (GWt:1002Kgs)
Steel Drums: Dia20mm-Dia80mm 900Kgs/Drum (GW: 915Kgs)
Dia90mm-Dia150mm 850Kgs/Drum (GW: 865Kg )
Why choosing H&G casting grinding steel balls
1. Over 20years Professional casting grinding balls manufacturing experience, deserves your trust.
2. High quality, competitive price and good service benefit our customers.
3. ISO9001 certified company, advanced oil quenching and heating production line, together with advanced testing machines imported from Germany are used to ensure the quality.
4. Chemical analysis reports would be sent together with each batch of steel balls, even samples.
5. Skilled sales & service team in Shanghai branch can provide timely good service.
6. 200 thousand Tons annual production capacity can provide short L/T.
Chemical Elements
Name | Chemical Elements (%) | |||||||
C | Si | Mn | Cr | Mo | Cu | P | S | |
Low Cr Balls | 2.1-3.6 | ≤1.5 | 0.3-1.5 | 0.8-1.8 | ≤0.8 | ≤1.0 | ≤0.06 | ≤0.06 |
Medium Cr Balls | 2.1-3.3 | ≤1.5 | 0.3-1.5 | 3-6 | ≤0.8 | ≤1.0 | ≤0.06 | ≤0.06 |
High Cr Balls | 2.0-3.3 | ≤1.2 | 0.3-1.5 | 10-13 | ≤0.8 | ≤0.6 | ≤0.06 | ≤0.06 |
Special High Cr | 2.0-3.3 | ≤1.2 | 0.3-1.5 | 15-23 | ≤0.8 | ≤0.6 | ≤0.06 | ≤0.06 |
Physical Property & Microstructure
Name | HRC | Ak(J/cm2) | Microstructure | Times of Falling Balls | |
Low Cr Balls | ≥45 | ≥2.5 | P+C | ≥10000 | |
Medium Cr Balls | ≥48 | ≥3.0 | P+C | ≤Φ80 | ≥15000 |
≥Φ80 | ≥10000 | ||||
High Cr Balls | ≥58 | ≥4 | M+C+A | ≤Φ80 | ≥15000 |
≥Φ80 | ≥10000 | ||||
M-Martensite P-Pearliet C-Carbide A-Austenite | |||||
Size & Weight
Size(mm) | Weight(kg/pc) | Quantity(pc/t) | Size(mm) | Weight(kg/pc) | Quantity(pc/t) | |
Φ30 | 0.11 | 9091 | Φ90 | 2.90 | 345 | |
Φ40 | 0.25 | 3891 | Φ100 | 4.00 | 250 | |
Φ50 | 0.50 | 2000 | Φ110 | 5.30 | 188 | |
Φ60 | 0.86 | 1153 | Φ120 | 6.80 | 147 | |
Φ70 | 1.37 | 729 | Φ130 | 7.70 | 129 | |
Φ80 | 2.05 | 487 | Φ140 | 8.74 | 114 |
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