Introduction to ASTM A210 seamless steel pipe
ASTM A210 is a specification for seamless carbon steel boiler and superheater tubes. It specifically specifies seamless carbon steel pipes for use in medium-high temperature and high pressure environments.
1. Materials and chemical composition
ASTM A210 seamless steel pipes mainly use two grades of carbon steel: Gr.A1 and C. Their chemical compositions are slightly different, but both ensure that the steel pipes have good mechanical properties and heat resistance.
Grade | C | Mn | P | S | Si |
Gr.A1 | ≤0.27% | 0.93% max | ≤0.035% | ≤0.035% | Not required |
C | ≤0.35% | 0.29-1.06% | ≤0.035% | ≤0.035% | 0.10% min |
2. Mechanical properties
ASTM A210 seamless steel pipes must meet certain tensile strength and yield strength to ensure their stability under high temperature and high pressure. The specific performance indicators are as follows:
Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) |
Gr.A1 | ≥415 | ≥255 | ≥30 |
C | ≥485 | ≥275 | ≥30 |
3. Manufacturing process
Hot rolling: The steel billet is rolled at high temperature to form a steel pipe, which is suitable for high temperature environments.
Cold drawing: Drawing at room temperature to improve surface quality and dimensional accuracy.
4. Dimensions
Outer diameter range: 12.7mm - 127mm
Wall thickness range: 2.6mm - 12.7mm
Length: 6m or 12m (customizable)
ASTM A210 seamless steel pipe is an ideal choice for industries such as power, petrochemicals and boiler manufacturing due to its high strength, high temperature resistance and pressure resistance. The seamless structure eliminates the stress concentration problem caused by the weld and improves the durability of the pipe, which is especially suitable for special application scenarios with high temperature and high pressure.
