钢丸技术指标technical specification for steel shot
| 项目item | 国家标准钢丸national standard steel shot | 高质量钢丸high quality steel shot | |
|
化 学 成 份 % Chemical composition |
carbon碳C | 0.85-1.20 | 0.10-0.20 |
| silicon硅Si | 0.40-1.20 | 0.10-0.35 | |
| manganese锰Mn | 0.60-1.20 | 0.35-1.50 | |
| sulfur硫S | <0.05 | <0.05 | |
| phosphorus磷P | <0.05 | <0.05 | |
| 硬度hardness | 钢丸steel shot |
HRC40-50 HRC55-62 |
HRC42-48 HRC48-54 |
| 密度density | 钢丸steel shot | ≥7.20 g/cm3 | 7.4g/cm3 |
| 金相组织metallographic structure |
回火马氏体或屈氏体 tempered martensite or troostite |
回火马氏体＋贝氏体 复相组织tempered martensite + bainite complex phase structure |
|
| 外观appearance |
圆球形 rounded hollow grain空心颗粒﹤10% crack 裂纹颗粒<15% |
圆球形 rounded hollow grain空心颗粒﹤5％ crack裂纹颗粒<10% |
|
钢丸粒度分布表 steel shot grain distribution
|
筛网号sieve designation |
英寸 inch |
筛网 孔径 sieve opening |
SAE J444 钢丸 steel shot | |||||||||||
| S930 | S780 | S660 | S550 | S460 | S390 | S330 | S280 | S230 | S170 | S110 | S70 | |||
| 6 | 0.132 | 3.35 | All Pass | |||||||||||
| 7 | 0.111 | 2.80 | All Pass | |||||||||||
| 8 | 0.0937 | 2.36 | ≥90% | All Pass | ||||||||||
| 10 | 0.0787 | 2.00 | ≥97% | ≥85% | All Pass | All Pass | ||||||||
| 12 | 0.0661 | 1.70 | ≥97% | ≥85% | ≤5% | All Pass | ||||||||
| 14 | 0.0555 | 1.40 | ≥97% | ≥85% | ≤5% | All Pass | ||||||||
| 16 | 0.0469 | 1.18 | ≥97% | ≥85% | ≤5% | All Pass | ||||||||
| 18 | 0.0394 | 1.00 | ≥96% | ≥85% | ≤5% | All Pass | ||||||||
| 20 | 0.0331 | 0.850 | ≥96% | ≥85% | ≤10% | All Pass | ||||||||
| 25 | 0.0280 | 0.710 | ≥96% | ≥85% | ≤10% | |||||||||
| 30 | 0.0232 | 0.600 | ≥96% | ≥85% | All Pass | |||||||||
| 35 | 0.0197 | 0.500 | ≥97% | ≤10% | ||||||||||
| 40 | 0.0165 | 0.425 | ≥85% | All Pass | ||||||||||
| 45 | 0.0138 | 0.355 | ≥97% | ≤10% | ||||||||||
| 50 | 0.0117 | 0.300 | ≥80% | |||||||||||
| 80 | 0.007 | 0.180 | ≥90% | ≥80% | ||||||||||
| 120 | 0.0049 | 0.125 | ≥90% | |||||||||||
| 200 | 0.0029 | 0.075 | ||||||||||||
| GB | 2.8 | 2.5 | 2.0 | 1.7 | 1.4 | 1.2 | 1.0 | 0.8 | 0.6 | 0.4 | 0.3 | 0.2 | ||
江苏圣世久浩材料科技有限公司 版权所有 
苏ICP备2024093085号-1 网站地图 苏州文旦设计制作
