ASTM A213 T9 is a specification for seamless ferritic alloy-steel boiler, superheater, and heat-exchanger tubes. The T9 designation indicates that the steel pipe is made of an alloy that contains c...
ASTM A213 T9 is a specification for seamless ferritic alloy-steel boiler, superheater, and heat-exchanger tubes. The T9 designation indicates that the steel pipe is made of an alloy that contains chromium (Cr) and molybdenum (Mo), with a minimum chromium content of 8% and a minimum molybdenum content of 0.30%. The T9 steel pipe has excellent corrosion resistance and high-temperature strength properties, making it ideal for use in high-temperature and high-pressure environments, such as in power plants and chemical plants. The steel pipe is also known for its good tensile, yield, and hardness properties, as well as its resistance to fatigue and creep. ASTM A213 T9 steel pipes are available in various sizes and thicknesses, and can be customized to meet specific requirements. Overall, ASTM A213 T9 steel pipes are a reliable and durable choice for high-temperature and high-pressure applications.
| Element | Symbol | Minimum Content |
|---|---|---|
| Carbon | C | 0.15% max |
| Manganese | Mn | 0.30-0.60% |
| Phosphorus | P | 0.025% max |
| Sulfur | S | 0.025% max |
| Silicon | Si | 0.25-1.00% |
| Chromium | Cr | 8.00-10.00% |
| Molybdenum | Mo | 0.90-1.10% |
| Vanadium | V | 0.15-0.50% |
Note: ASTM A213 T9 alloy steel pipes may also contain small amounts of other elements such as iron (Fe), nickel (Ni), and copper (Cu), but their content is usually negligible and does not significantly affect the properties of the pipe material.
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