化学成分 | 物理特性 |
Cr 1.0-1.5% |
GP 41-50HRC; GL 51-55HRC; GH 60-68HRC |
C 0.8-1.2% | |
Si 0.4-1.2% | |
Mn 0.6-1.2% | |
S<0.05% | |
P<0.05% |
SAE J444 标准钢砂粒度分布 | ||||||||||||
Screen No | In | Screen size | G10 | G12 | G14 | G16 | G18 | G25 | G40 | G50 | G80 | G120 |
6 | 0.132 | 3.35 | ||||||||||
7 | 0.111 | 2.8 | All Pass | |||||||||
8 | 0.0937 | 2.36 | All Pass | |||||||||
10 | 0.0787 | 2 | 80% | All Pass | ||||||||
12 | 0.0661 | 1.7 | 90% | 80% | All Pass | |||||||
14 | 0.0555 | 1.4 | 90% | 80% | All Pass | |||||||
16 | 0.0469 | 1.18 | 90% | 75% | All Pass | |||||||
18 | 0.0394 | 1 | 85% | 75% | All Pass | |||||||
20 | 0.0331 | 0.85 | ||||||||||
25 | 0.028 | 0.71 | 85% | 70% | All Pass | |||||||
30 | 0.023 | 0.6 | ||||||||||
35 | 0.0197 | 0.5 | ||||||||||
40 | 0.0165 | 0.425 | 80% | 70%min | All Pass | |||||||
45 | 0.0138 | 0.355 | ||||||||||
50 | 0.0117 | 0.3 | 80%min | 65%min | All Pass | |||||||
80 | 0.007 | 0.18 | 75%min | 65%min | ||||||||
120 | 0.0049 | 0.125 | 75%min | 65%min | ||||||||
200 | 0.0029 | 0.075 | 70%min | |||||||||
GB | 2.5 | 2 | 1.7 | 1.4 | 1.2 | 1 | 0.7 | 0.4 | 0.3 | 0.2 |