| 牌号 | A291 Grade 8 Class I |
|---|---|
| 对应标准 | ASTM A291/A291M-2019(R2025)
减速齿轮用小齿轮、齿轮及轴类碳钢和合金钢锻件标准规范 Standard Specification for Steel Forgings, Carbon and Alloy, for Pinions, Gears and Shafts for Reduction Gears |
| 归类 | 合金钢 |
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