ASTM A210 / ASME SA210 Gr A1 & C
ASTM A210 / ASME SA210 covers medium-carbon seamless steel tubes that are used for boilers, superheaters, and heat exchangers in high-temperature service. These tubes are known for excellent mechanical strength, thermal resistance, and durability under elevated pressure and temperature conditions.
Grades Available
Grade A1
- Medium carbon content.
- Offers good strength, weldability, and cost-effectiveness.
- Commonly used in low to medium pressure boilers and general engineering applications.
Grade C
- Higher carbon content compared to A1.
- Provides greater tensile strength and creep resistance.
- Preferred for high-pressure boilers and critical heat transfer equipment.
Chemical Composition
| Grade | Carbon (C) | Manganese (Mn) | Phosphorus (P) | Sulfur (S) | Silicon (Si) |
|---|---|---|---|---|---|
| A1 | 0.27 max | 0.93 max | 0.035 max | 0.035 max | Not specified |
| C | 0.35 max | 0.29–1.06 | 0.035 max | 0.035 max | Not specified |
Mechanical Properties
| Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) |
|---|---|---|---|
| A1 | 415 min | 255 min | 30 |
| C | 485 min | 275 min | 30 |
Key Features
- High resistance to oxidation and scaling at elevated temperatures.
- Excellent pressure resistance in boiler and superheater applications.
- Suitable for welding, flanging, and bending operations.
Applications
- High-pressure boilers
- Superheaters and reheaters
- Heat exchangers
- Condensers in power plants
- Industrial steam lines
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