ASTM A106 Cyflwyniad:
1. ASTM A106 Ar gyfer Deunydd Safonol America, gan gynnwys A, B, C Cyfanswm o dri gradd
| Safon America | Tsieineaidd tebyg | cryfder tynnol |
| A | 20# | 330mpa |
| B | C235 | 415mpa, |
| C | C345 | 485mpa |
- Dadansoddi cemegol
| ≤c | Mn | ≤p | ≤s | Si | ≤cr | ≤CU | Mo | Ni | V | |
| A | 0.25 | 0.27-0.93 | 0.035 | 0.035 | 0.1 | 0.4 | 0.4 | 0.15 | 0.4 | 0.08 |
| B | 0.30 | 0.29-1.06 | 0.035 | 0.035 | 0.1 | 0.4 | 0.4 | 0.15 | 0.4 | 0.08 |
| C | 0.35 | 0.29-1.06 | 0.035 | 0.035 | 0.1 | 0.4 | 0.4 | 0.15 | 0.4 | 0.08 |
Mae C a MN yn gwahaniaethu rhwng y radd uwchlaw, yna mae'n dod â chryfder tynnol gwahanol.
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Amser Post: Mawrth-12-2018