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
High Chrome Cast Ball （Cr:10%-19%）
1. Chemical Composition — Steel Ball Grades, Φ8 mm to Φ150 mm Name | Grade | Chemical Composition ---|---|--- CSiMnCrPSMoNiCu High-Chromium Cast Steel Balls (HCCB) | ZQCR10 | 2.0–3.3 ≤1.20 0.3–1.5 10–11 ≤0.08 ≤0.06 0–3.0 0–1.5 0–1.2 ZQCR11 | 11–12 ZQCR12 | 12–13 ZQCR13 | 13–14 ZQCR14 | 14–15 ZQCR15 | 15–16 ZQCR16 | 16–17 ZQCR17 | 17–18 ZQCR18 | 18–19 Z
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High Chrome Cast Ball （Cr:10%-19%）
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Product Description
1. Chemical Composition
Steel ball model | Φ8 mm ~ Φ150 mm | |||||||||
Name | Grade | Chemical composition | ||||||||
C | Yes | Mn | Cr | P | S | Mo | Ni | Cu | ||
High-chromium cast steel balls | ZQCR10 | 2.0-3.3 | ≤1.20 | 0.3~1.5 | 10~11 | ≤0.08 | ≤0.06 | 0~3.0 | 0~1.5 | 0~1.2 |
ZQCR11 | 11~12 | |||||||||
ZQCR12 | 12~13 | |||||||||
ZQCR13 | 13~14 | |||||||||
ZQCR14 | 14~15 | |||||||||
ZQCR15 | 15~16 | |||||||||
ZQCR16 | 16~17 | |||||||||
ZQCR17 | 17~18 | |||||||||
ZQCR18 | 18~19 | |||||||||
ZQCR19 | 19~20 | |||||||||
2. Hardness, impact toughness, and microstructure
Name | Grade | Surface hardness | Volumetric hardness | Impact value | Microstructure | Drop-ball impact fatigue life | |
High-Chromium Grinding Steel Balls (HCCB) | ZQCR10-ZQCR12 | 58-63 | 58-62 | ≥3 | M+C | 80≤Φ≤150 | 10000 |
ZQCR13-ZQCR16 | 59-64 | 59-63 | |||||
ZQCR17-ZQCR19 | 60-65 | 60-64 | |||||
M—Martensite, C—Carbide | |||||||
3. Typical hardness distribution:
During the manufacturing process, we precisely control the overall hardness of the steel balls, ensuring uniform hardness throughout and a maximum differential between inner and outer hardness of no more than 2.5 HRC.
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