ASTM A213 T11 Cr-Mo Alloy Seamless Tube for 580°C+ High-Temperature & High-Pressure Boiler and Heat Exchanger

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ASTM A213 T11 Cr-Mo Alloy Seamless Tube for 580°C+ High-Temperature & High-Pressure Boiler and Heat Exchanger

ASTM A213 T11 is a chromium-molybdenum (Cr-Mo) low-alloy ferritic seamless steel tube, with the nominal composition of 1.25Cr-0.5Mo-Si. It is in minimum wall thickness or, if specified in the order, average wall thickness. T11 alloy steel offers good weldability, requiring preheating to 300°C prior to welding and post-weld stress relief treatment. The product is widely utilized in high-pressure, ultra-high-pressure, and subcritical power station boiler superheaters, reheaters, headers, and main steam pipelines, as well as nuclear power heat exchangers and petrochemical cracking unit furnace tubes.

Chemical & Mechanical Properties

Mechanical Properties

*Heat treatment

The ASTM A213 T11 seamless tubes shall be made by the hot-rolling or cold-drawn seamless process. The tubes may be furnished in two heat treated conditions: full or isothermal annealed; or normalized and tempered (N+T). Especially, if N+T is adopted, the tempering temperature shall be no less than 650°C [1200°F].

Tolerance

*Permissible variations from the specified minimum wall thickness shall be in accordance with Specification A1016/A1016M.

Key Adventages

• High Strength: Superior tensile and yield strength for high-stress conditions.
• Thermal Stability: Handles rapid temperature changes, reducing thermal fatigue risks.
• Seamless Design: Provides improved strength and reliability, reducing the risk of leaks and failures.
• Corrosion Resistance: Enhanced resistance to oxidation and corrosion for extended life in aggressive environments.

Key Applications

• Power Plants: Widely used in boilers and heat exchangers for steam generation.
• Oil and Gas Industry: Utilized in pipelines and process equipment operating under high-pressure conditions.
• Chemical Processing: Suitable for transferring corrosive substances at elevated temperatures.
• Petrochemical Refineries: Employed in various applications where high strength and corrosion resistance are critical.