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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
Low-chromium cast ball LCCB (Cr: 1%–3%)
1. Chemical Composition: Steel Ball Grades, Φ8 mm to Φ150 mm | Grade Name | Chemical Composition (wt%) | |---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|......1. Chemical Composition: Steel Ball Grades, Φ8 mm to Φ150 mm | Grade Name | Chemical Composition (wt%) | |---|---|---| | ZQCR32 | C: 2.1–3.6 | Si: ≤1.50 | Mn: 3–4 | Cr: ≤0.10 | P: ≤0.10 | S: trace | Mo: trace | Ni: trace | Cu: trace | | ZQCR22 | C: 2.0–3.0 | Si: ≤1.50 | Mn: 3–4 | Cr: ≤0.10 | P: ≤0.10 | S: trace | Mo: trace | Ni: trace | Cu: trace | | ZQCR11 | C: 1.0–2.0 | Si: ≤1.50 | Mn: 3–4 | Cr: ≤0.10 | P: ≤0.10 | S: trace | Mo: trace | Ni: trace | Cu: trace | | ZQCR0 | C: 0.2–1.0 | Si: ≤1.50 | Mn: 3–4 | Cr: ≤0.10 | P: ≤0.10 | S: trace | Mo: trace | Ni: trace | Cu: trace | | Low-Chromium Cast Steel Balls (LCCB) | ZQCR32 | C: 2.1–3.6 | Si: ≤1.50 | Mn: 3–4 | Cr: ≤0.10 | P: ≤0.10 | S: trace | Mo: trace | Ni: trace | Cu: trace | | Low-Chromium Grinding Balls | ZQCR32 | C: 2.1–3.6 | Si: ≤1.50 | Mn: 3–4 | Cr: ≤0.10 | P: ≤0.10 | S: trace | Mo: trace | Ni: trace | Cu: trace | | ZQCR22 | C: 2.0–3.0 | Si: ≤1.50 | Mn: 3–4 | Cr: ≤0.10 | P: ≤0.10 | S: trace | Mo: trace | Ni: trace | Cu: trace | | ZQCR11 | C: 1.0–2.0 | Si: ≤1.50 | Mn: 3–4 | Cr: ≤0.10 | P: ≤0.10 | S: trace | Mo: trace | Ni: trace | Cu: trace | | ZQCR0 | C: 0.2–1.0 | Si: ≤1.50 | Mn: 3–4 | Cr: ≤0.10 | P: ≤0.10 | S: trace | Mo: trace | Ni: trace | Cu: trace | | Hardness, Impact Toughness, and Microstructure: | Grade Name | Surface Hardness (HRC) | Bulk Hardness (HRC) | Impact Value (Ak: J/cm²) | Microstructure | Drop‑Ball Impact Fatigue Life (at a height of 3.5 m) | | Low‑Chromium Grinding Balls | ZQCR32 | 58–62 | 58–62 | ≥15 | Bainitic + Martensitic structure | >100,000 cycles | | ZQCR22 | 58–62 | 58–62 | ≥15 | Bainitic + Martensitic structure | >100,000 cycles | | ZQCR11 | 58–62 | 58–62 | ≥15 | Bainitic + Martensitic structure | >100,000 cycles | | ZQCR0 | 58–62 | 58–62 | ≥15 | Bainitic + Martensitic structure | >100,000 cycles |
Keywords:
Low-chromium cast ball LCCB (Cr: 1%–3%)
Category:
Product Description
1. Chemical Composition
|
Steel ball model |
Φ8 mm ~ Φ150 mm |
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|
Name |
Grade |
Chemical composition |
||||||||
|
C |
Yes |
Mn |
Cr |
P |
S |
Mo |
Ni |
Cu |
||
|
Low-chromium cast steel balls |
ZQCR3 |
2.1-3.6 |
≤1.50 |
0.3~1.50 |
3~4 |
≤0.10 |
≤0.10 |
Trace amounts |
Trace amounts |
Trace amounts |
|
ZQCR2 |
2~3 |
|||||||||
|
ZQCR1 |
1~2 |
|||||||||
|
ZQCR0 |
0.2~1 |
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2. Hardness, impact toughness, and microstructure
|
Name |
Grade |
Surface hardness |
Volumetric Hardness (HRC) |
Impact value |
Microstructure |
Drop-ball impact fatigue life |
|
|
Low-chromium grinding |
ZQCR1, ZQCR2, ZQCR3 |
45-50 |
45-49 |
≥1.5 |
P+C |
80≤Φ≤150 |
8000 |
|
ZQCR0 |
40-45 |
40-44 |
≥1.2 |
P+C |
|||
|
P—Pearlite, C—Carbide |
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