Astm A335 P11 Pipes

ASTM A335 P11 is a seamless ferritic alloy steel tube designed for high-temperature applications. It is commonly referred to as P11 pipe and is suitable for bending, flanging, and similar forming operations. The tube is made from a combination of chromium and molybdenum, which enhances its corrosion resistance and high-temperature strength. It is widely used in high-temperature environments such as power plants, the petrochemical industry, and in the manufacture of components for spacecraft and jet engines.
Outer Diameter: 5mm-420mm
Wall Thickness: 0.5mm-55mm
Length: Can be customized upon request
Steel Grade: Grade P1 Grade P2 Grade P5 Grade P5b Grade P5c Grade P9 Grade P11 Grade P12 Grade P15 Grade P21 Grade P22 Grade P23

Products Description

ASTM A335 P11 Pipe

Advantages of ASTM A335 P11 Pipe in Application Areas

ASTM A335 P11 pipe has strong heat resistance and can withstand high steam temperatures (up to 1112°F) without losing strength, making it suitable for steam pipes. In addition, chromium and molybdenum can improve the oxidation resistance and anti-scaling ability under boiler conditions.
ASTM A335 P11 pipe has strong corrosion resistance and can prevent sulfide and chloride stress corrosion cracking in the refining process in oil and gas refining.
ASTM A335 P11 pipe has strong pressure resistance and performs well under both static and dynamic pressures, making it suitable for industrial pressure vessels and header applications.

Applications of ASTM A335 P11 Pipe

Power generation plants
Oil and gas refineries
Petrochemical plants
Steam boilers and pressure vessels
Heat exchangers and superheaters
High-temperature process piping

Chemical Composition

Grade	C (%)	Mn (%)	P (max)	S (max)	Cr (%)	Mo (%)	Si (%)
P1	0.10–0.20	0.30–0.80	0.025	0.025	–	–	0.10–0.50
P2	0.05–0.15	0.30–0.60	0.025	0.025	–	–	0.10–0.30
P5	0.15	0.30–0.60	0.025	0.025	4.00–6.00	0.45–0.65	≤ 0.50
P9	0.15	0.30–0.60	0.025	0.025	8.00–10.00	0.90–1.10	≤ 0.25
P11	0.05–0.15	0.30–0.60	0.025	0.025	1.00–1.50	0.44–0.65	≤ 0.50
P12	0.05–0.15	0.30–0.61	0.025	0.025	0.80–1.25	0.44–0.65	≤ 0.50

Mechanical Properties

Grade	Tensile Strength (MPa)	Yield Strength (MPa)	Elongation (%)
P1	≥ 380	≥ 205	≥ 30
P2	≥ 380	≥ 205	≥ 30
P5	≥ 415	≥ 205	≥ 30
P9	≥ 585	≥ 275	≥ 30
P11	≥ 415	≥ 205	≥ 30
P12	≥ 415	≥ 205	≥ 30