SA662 Grade C Steel Plate For Heat Exchanger

SA662GrC steel plate is an American standard pressure vessel plate, classified as a carbon-manganese-silicon steel plate for medium and low-temperature pressure vessels. It is mainly used to manufacture welded pressure vessels that require low-temperature impact toughness, especially those used at a temperature of -40°C.

• "SA": Indicates an American standard pressure vessel plate.
• "662": Indicates that the minimum yield strength of the steel plate is 622 MPa.
• "Gr": Stands for the abbreviation of "grade".
• "C": Indicates the quality grade of the steel plate, with an impact test temperature of 0°C.

 

 

• SA662 GrC steel plate → C (carbon) → ≤ 0.24;
• SA662 GrC steel plate → Si (silicon) → ≤ 0.13-0.55;
• SA662 GrC steel plate → Mn (manganese) → 0.92-1.72;
• SA662 GrC steel plate → S (sulfur) → ≤ 0.035;
• SA662 GrC steel plate → P (phosphorus) → ≤ 0.025

 

 

• SA662 GrC steel plate → yield strength → ≥ 275MPa;
• SA662 GrC steel plate → tensile strength → 485-620MPa;
• SA662 GrC steel plate → steel plate elongation → 22%

 

 

Due to its excellent mechanical properties and good weldability, SA662GrC steel plate is widely used in the following fields:

 

Petrochemical Industry: It is used to manufacture equipment such as reactors, heat exchangers, separators, spherical tanks, oil and gas tanks, and liquefied gas tanks. It can ensure the strength and stability of the equipment in low-temperature environments and resist the pressure and corrosion of media.

 

Power Industry: It can be used for steam drums of power plant boilers and pressure vessels of nuclear reactors, etc. It can withstand high temperature, high pressure and low-temperature working condition changes, ensuring the safe operation of power equipment.

 

Other Fields: In hydropower stations, it is used to manufacture high-pressure water pipes, turbine volutes, etc. It still has good mechanical properties under low-temperature conditions, ensuring the reliability of water conservancy facilities.

 

 

Non-Destructive Testing (NDT): The flaw detection standard for SA662GrC steel plate is implemented in accordance with A578/A578M ultrasonic testing to ensure no internal defects in the steel plate.

 

Dimensional Inspection: SA662GrC steel plate comes in various dimensions. Common specifications include a thickness of 10–120mm, a width of 2000–3200mm (or 2200–2500mm), and a length of generally 12000mm. Customization is also available according to customer requirements.

 

Surface Quality: The surface of SA662GrC steel plate shall be flat and smooth, without defects such as cracks, slag inclusions, and folds. At the same time, the surface of the steel plate shall also undergo treatments such as rust removal, oil removal, and scale removal to improve the surface quality and coating performance of the steel plate.

 

Mechanical Properties: Translated as "mechanical properties" (industry-standard term), covering indicators such as strength, toughness, and weldability mentioned in the text.

 

Weldability: Directly used as "weldability" (a dedicated term in materials science), accurately reflecting the steel plate's ability to form high-quality welds.

 

Ultrasonic Testing: Specified as "ultrasonic testing" (abbreviated as UT in NDT), corresponding to the ASTM A578/A578M standard for internal defect detection of steel plates.

 

Slag Inclusions/Folds: Translated as "slag inclusions" and "folds" respectively-these are precise descriptions of common surface/near-surface defects in steel plates, consistent with international metallurgical defect terminology.

 

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Whether it is for high-pressure storage tanks in the chemical and energy industries, or high-temperature resistant pressure vessel plates specifically for boiler equipment, we can provide products that meet standards such as ASME SA662GrC. If you need to confirm parameters like the yield strength, impact toughness, or thickness tolerance of the plates, or if you want to obtain a customized quotation for specific working conditions, please feel free to contact us to send an inquiry. Our professional team will provide a detailed plan within 24 hours.

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