ASTM A213 T9 Alloy Steel Seamless Furnace and Heat Exchanger Tubes

ASME SA213/ASTM A213 This specification covers seamless ferritic and austenitic steel boiler, superheater, and heat-exchanger tubes, designated Grades T5, TP304, TP321, etc. ASTM A213 T9 (SA213 T9) is a chromium-molybdenum (Cr-Mo) alloy steel specifically designed for high-temperature and high-pressure environments. Its unique composition (9% Cr, 1% Mo) provides excellent oxidation resistance, creep strength, and corrosion resistance.

Chemical Composition (%) max

Carbon: 0.15

Manganese: 0.30-0.60

Phosphorus: 0.025

Sulfur: 0.025

Silicon: 0.25-1.00

Chromium: 8.0-10.0

Molybdenum: 0.90-1.10

Mechanical Properties

Subcritical Annealing /Tempering Temperature,min or range : 1250 °F [ 675°C ]

Tensile Strength, min. : 60ksi [415MPa ] ; Yield Strength, min.: 30ksi [ 205MPa ]

Elongation in 2 in. or 50mm, min.: 30% ; Brinell/Vickers: 179HBW/190HV ; Rockwell: 89HRB

Advantages

Better Oxidation Resistance than T11/T22 at higher temps.

Higher Creep Strength compared to carbon steel.

Good Weldability (though pre/post-weld heat treatment is needed).

Cost-Effective compared to stainless steels (e.g., 304H, 321H) for certain temp ranges.

Applications

Power Generation (Boilers & Superheaters)

Superheater & Reheater Tubes: T9 tubes withstand steam temperatures up to 650°C (1200°F) without excessive scaling.

Boiler Tubes: Used in high-pressure boilers where carbon steel would fail due to oxidation.

Heat Recovery Steam Generators (HRSGs): Resists thermal fatigue in combined-cycle power plants.

Petrochemical & Refinery Applications

Furnace Tubes & Heat Exchangers: Handles sulfur-rich environments better than low-alloy steels.

Catalyst Tubes in Refineries: Resists carburization and hydrogen attack at high temps.

Chemical Processing Plants

High-Temperature Process Piping: Used where corrosive gases or steam are present.

Thermal Cracking Units: Maintains strength under cyclic heating conditions.

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Our factories main products as below :
Factory 1th: Stainless steel seamless tube, Duplex steel seamless tube, Super duplex steel seamless tube, Nickel alloy steel seamless tube;

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Factory 3th: High frequency welding fin tube(HFW fin tube, Solid Fin tube, Studded Tube, Serrated Fin tube, Longitudinal welding fin tube), Wound fin tube(L type fin tube, LL type fin tube, KL type fin tube), Embedded G type fin tube , Extruded fin tube, low fin tube, U bend & 180deg. Return;

Yuhong Holding Group also has gained rich experience for project package( products contain:Pipes, Fittings, Flanges, heat exchanger, furnace, fired heater, air cooler, boiler) , YUHONG brand has marked its global presence in more than 85 countries, like, Korea, USA, Canada, Mexico, Colombia, Bolivia, Chile, Argentina, Brazil, Ecuador, Austria, New Zealand, Singapore, Malasyia, Indonesia, Thailand, Vietnam, Ukraine, Turkey,Sauid Arabia, Qatar, U.A.E,Israel,India, UK, France, Italy, Gernmany, Poland, Spain,... We have successfully implemented the orders of Cross Country Pipelines for our valuable customers. In addition, we have also developed a huge network of contacts and strategic alliances with most important manufacturers as stockists around the world.