The yield strength of A335 P11 is ≥205MPa.
Chemical composition of ASTM A335 P11 seamless steel pipe: carbon 0.05~0.15, manganese 0.30~0.60, phosphorus ≤0.025, sulfur ≤0.025, silicon 0.5~1.0, chromium 1.0~1.5, molybdenum 0.44~0.62, tensile strength ≥415MPa, elongation after breaking Growth rate ≥30%1.
A335 P11 seamless steel pipe is mainly used as seamless alloy steel pipe for boilers, superheaters and heat exchangers in petrochemical industry.
| Chemical Composition (wt.%) | A335 P11 |
|---|---|
| Carbon (C) | 0.05 - 0.15 |
| Manganese (Mn) | 0.30 - 0.60 |
| Phosphorus (P) | ≤ 0.025 |
| Sulfur (S) | ≤ 0.025 |
| Silicon (Si) | 0.50 - 1.00 |
| Chromium (Cr) | 1.00 - 1.50 |
| Molybdenum (Mo) | 0.44 - 0.65 |
| Mechanical Properties | A335 P11 |
|---|---|
| Yield Strength (MPa) | ≥ 205 |
| Tensile Strength (MPa) | ≥ 415 |
| Elongation (%) | ≥ 30 |
