ASME SA210 Grade A1 Carbon Steel Seamless Boiler Tube and Superheater Tube

ASME SA210 Grade A1 Carbon Steel Seamless Boiler Tube and Superheater Tube

ASME SA210 GR.A1 carbon steel seamless tube is a widely used medium carbon steel tube for boilers and superheaters. The working temperature is usually below 454 ℃, mainly used for boilers and heat exchanger components with medium and low pressure, medium and low temperature. 

Used for heating surface tubes of low and medium pressure boilers (with a working pressure generally not exceeding 5.88Mpa and a working temperature below 450 ℃); Used for heating surface pipes, economizers, superheaters, reheaters, petrochemical industry pipes, etc. of high-pressure boilers (with working pressure generally above 9.8Mpa and working temperature between 450 ℃ and 650 ℃)

ASME SA210 GR.A1 belongs to medium carbon steel with a carbon content of less than or equal to 0.27%. Compared to low carbon steels such as ASME SA178 GR.A and ASME SA192, it maintains higher strength while still having relatively good weldability and formability, which is to some extent superior to higher carbon or alloy steels. On the other hand, a silicon content greater than or equal to 0.10% ensures that ASME SA210GR.A1 has a good deoxidation effect.

ASTM A210/ASME SA210 Grade A1 Boiler Tube Mechanical Properties

ASTM A210/ASME SA210 Boiler Tube Wall Thickness Tolerance

Comparison between ASME SA210 GR.A1 Carbon Steel Tubes and Other Grades

• SA210 GR.A1 vs SA210 GR.C: Compared to ASME SA210 GR.C, which has a carbon content of ≤ 0.35%, GR.A1 has a lower carbon content (≤ 0.27%), resulting in a relatively lower strength of the tube. It is suitable for working environments at medium to low temperatures and medium to low pressures, while GR.C is suitable for slightly higher temperature and pressure environments. However, due to its lower strength, GR.A1 has better weldability and formability than GR.C. GR.C typically requires preheating and post weld heat treatment.
• SA210 GR.A1 vs SA192: Compared to SA210 GR.A1 medium carbon steel tubes, SA192 belongs to low-carbon steel pipes (C ≤ 0.06-0.18%) with the lowest strength, but has excellent ductility, weldability, and thermal conductivity. It is commonly used in economizers and water-cooled walls of low-pressure boilers.
• SA210 GR.A1 vs SA106 GR.B: Although both SA106 GR.B and SA210 GR.A1 belong to medium carbon steel (C ≤ 0.30%), they are mainly used for high-temperature and high-pressure process pipelines (such as petrochemical and power plant main steam pipelines). Their chemical composition, heat treatment requirements (usually normalizing+tempering or quenching+tempering), and mechanical properties (especially high-temperature performance) are different from SA210 carbon steel boiler tubes. The two are not directly interchangeable.

ASTM A210/ASME SA210 Boiler Tube Application

Boiler

Super heater

Heat exchangers

Condensers

Marine application

Refineries

Paper pulping

Petrochemical applications

Pressure vessels

General engineering applications