ASTM A335 P11 Seamless PipeASME SA335 P11 Seamless Pipechrome-moly alloy steelhigh-temperature service. The P11 gradechromium at 1.00%–1.50%molybdenum at 0.44%–0.65%minimum tensile strength of 415 MPaminimum yield strength of 205 MPa.
ASTM A335 P11 is often called chrome-moly pipe. enhances overall strength, elasticity, hardenability, and material quality.
It increases resistance to softening, restricts grain growth, and reduces the likelihood of embrittlement. Molybdenum is the key element responsible for improving high-temperature resistance up to 540–750℃.
is a critical alloying element commonly used in stainless steels. While chromium content above 12% classifies the material as stainless steel, in P11 pipes, the controlled chromium levels provide excellent , even at elevated temperatures. The combination of chromium and molybdenum ensures .
Due to this composition, ASTM A335 P11 seamless pipes are ideal for use in high-temperature and high-pressure transportation of fluids or gases.
| C (%) | P (%) | ||||
|---|---|---|---|---|---|
| P11 | 0.05–0.15 | 0.30–0.60 | <=0.025 | 0.50–1.50 | 0.44–0.65 |
| P11 | >=415 | >=205 | >=30 |
ASTM A335 P11 pipes.
P11 steel, with a typical yield strength of >=205 MPa, a tensile strength of >=415 MPaelongation of >=30%, is also widely used in other high-performance applications requiring both high-temperature strength and dimensional stability.
, up to 540–750℃ under demanding conditions.
