SA210A1 seamless steel pipe and SA210C seamless steel pipe have significant differences, mainly in chemical composition, mechanical properties, application scenarios, and manufacturing process requirements, as follows:
First, the difference in chemical composition of the two seamless steel pipes
The chemical composition of SA210A1 seamless steel pipe: carbon content: 0.17-0.23%, manganese content: 0.35-0.65%, silicon content: 0.17-0.37%, phosphorus content: ≤0.025%, sulfur content: ≤0.015%
Chemical composition of SA210C seamless steel pipe: carbon content: ≤0.35%, manganese content: 0.29-1.06%, silicon content: ≥0.10%, phosphorus content: ≤0.035%, sulfur content: ≤0.035%
Difference analysis of the two seamless steel pipes: SA210C has a higher upper limit of carbon content, a wider range of manganese content, lower silicon content requirements, and higher upper limits of phosphorus and sulfur content. These differences lead to essential differences between the two in terms of strength, toughness, and corrosion resistance.
Second, the difference in mechanical properties of the two seamless steel pipes
Mechanical properties of SA210A1 seamless steel pipe: tensile strength (Rm): 410-550MPa, lower yield strength (Rp0.2): 245MPa, elongation after fracture (A): 24%
Mechanical properties of SA210C seamless steel pipe: tensile strength (Rm): ≥485MPa, lower yield strength (Rp0.2): ≥275MPa, elongation after fracture (A): ≥30%
Difference analysis of the two seamless steel pipes: The tensile strength and yield strength of SA210C are significantly higher than those of SA210A1, indicating that its bearing capacity is stronger; while the elongation of SA210A1 is slightly lower and the plasticity is relatively poor.
Third, the difference in application scenarios of the two seamless steel pipes
Application scenarios of SA210A1 seamless steel pipe:
Applicable to boiler pressure parts with metal design temperature in the range of 350℃-425℃.
Commonly used to manufacture heating surface tubes, economizers, superheaters, reheaters, and other components of high-pressure boilers.
Application scenarios of SA210C seamless steel pipes:
Mainly used to manufacture economizers, water-cooled walls, low-temperature superheaters, and other components in boiler pressure components.
Suitable for occasions where the working temperature is lower than 500℃ (or 450℃).
Difference analysis: SA210C seamless steel pipes are suitable for boiler components with higher pressure and temperature due to their higher strength; while SA210A1 seamless steel pipes are more suitable for medium-temperature and high-pressure environments.
Fourth, the difference in manufacturing process requirements for the two seamless steel pipes
The manufacturing process of SA210A1 seamless steel pipes:
There are optimization requirements for component design, such as increasing the lower limit of Mn content (0.7%) to meet material standards.
The chemical composition and mechanical properties need to be strictly controlled to ensure that the use requirements at the design temperature are met.
The manufacturing process of SA210C seamless steel pipes:
There are high requirements for welding performance, and generally, no preheating is required before welding, and no heat treatment is required after welding.
It is necessary to avoid the blue brittle temperature of about 250℃ for pipe bending.
Difference analysis: The two have different focuses on manufacturing processes. SA210A1 seamless steel pipe pays more attention to composition optimization, while SA210C seamless steel pipe emphasizes welding and processing performance.
Fifth, summary
Characteristics SA210A1 seamless steel pipe and SA210C seamless steel pipe Chemical composition Low carbon, low manganese, medium silicon High carbon, high manganese, low silicon Mechanical properties Low strength, good plasticity High strength, equivalent plasticity Application scenarios Medium temperature and high pressure boiler parts High temperature and high pressure boiler parts Manufacturing process Composition optimization High welding and processing performance requirements High Selection suggestions:
If higher strength and bearing capacity are required, choose SA210C seamless steel pipe;
If better plasticity and medium temperature performance are required, choose SA210A1 seamless steel pipe.
Threeway Steel is known as a professional supplier engaged in manufacturing and distributing a wide range of steel pipe, and our headquarter located the central part of China – Hunan and six associated factories throughout China.
Threeway Steel is known as a professional supplier engaged in designing, manufacturing and distribution of a wide range of steel products with the headquarter located the central part of China – Hunan and six associated factories throughout China.
Threeway Steel is known as a professional supplier engaged in designing, manufacturing and distribution of a wide range of steel products with the headquarter located the central part of China – Hunan and six associated factories throughout China.
Threeway Steel is known as a professional supplier engaged in designing, manufacturing and distribution of a wide range of steel products with the headquarter located the central part of China – Hunan and six associated factories throughout China.
Threeway Steel is known as a professional supplier engaged in designing, manufacturing and distribution of a wide range of steel products with the headquarter located the central part of China – Hunan and six associated factories throughout China.
