Shougang Steel Balls – Manufacturer and Partner of Grinding Media!
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Shougang Metallurgical Building Materials Co., Ltd., Fengrun District, Tangshan City
Address: Baiguantun Economic Development Zone, Fengrun District, Tangshan City, Hebei Province
Website: www.sgsteelball.cn
Website: www.sgsteelball.com
SGFB-4 (C:0.55%,Cr:0.8%)
1. Chemical Composition: Product Name, Grade, and Chemical Composition (%): CSiMnCrMoCuPS Forged Steel Balls SGFB-40.52–0.660.17–1.850.60–0.900.70–1.10≤0.50≤0.30≤0.035≤0.035 2. Hardness, Impact Toughness, Microstructure, and Fatigue Life: Grade/Model (mm) Surface Hardness (HRC) Core Hardness (HRC) Bulk Hardness (HRC) Impact Value (Ak: J/cm²) Microstructure Drop‑Ball Impact Fatigue Life (Drop Height: 3.5 m) SGFB-4Φ906
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SGFB-4 (C:0.55%,Cr:0.8%)
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Product Description
1. Chemical Composition:
Product Name | Grade | Chemical Composition (%) | |||||||
C | Yes | Mn | Cr | Mo | Cu | P | S | ||
Forged steel ball | SGFB-4 | 0.52-0.66 | 0.17-1.85 | 0.60-0.90 | 0.70-1.10 | ≤0.50 | ≤0.30 | ≤0.035 | ≤0.035 |
2. Hardness, impact toughness, microstructure, and fatigue life:
Grade | Model number | Surface hardness | Inner hardness | Volumetric hardness | Impact value | Microstructure | Drop-ball impact fatigue life |
SGFB-4 | Φ90 | 60-65 | 59-64 | 60-64 | ≥13 | M+B+C | ≥12000 |
Φ100~Φ110 | 59-64 | 57-62 | 59-64 | ||||
Φ120~Φ127 | 57-63 | 54-60 | 56-62 | ||||
Φ130 | 55-60 | 50-55 | 53-58 | ||||
Φ140 | 53-58 | 45-50 | 50-55 | ||||
Φ150 | 50-55 | 40-45 | 48-53 | ||||
M—Martensite, B—Bainite, C—Carbides | |||||||
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