C | Si | Mn | P | S | Cr | Mo | Cu | Ni | |
La norma ASTM A106 Un | ≤0,25 | ≥0.10 | 0.27~0.93 | ≤0,035 | ≤0,035 | ≤0,40 | ≤0,15 | ≤0,40 | ≤0,40 |
ASTM A106B | ≤0,30 | ≥0.10 | 0.29~1.06 | ≤0,035 | ≤0,035 | ≤0,40 | ≤0,15 | ≤0,40 | ≤0,40 |
ASTM A106C | ≤0,35 | ≥0.10 | 0.29~1.06 | ≤0,35 | ≤0,35 | ≤0,40 | ≤0,15 | ≤0,40 | ≤0,40 |