High-strength Alloy Steel Tubes For High Temperature
Astm a213 t91 tubes are seamless alloy steel tubes engineered for high-temperature service, offering excellent strength, corrosion resistance, and durability for boilers and power plants.
ASTM A213 T91 Tubes are seamless ferritic alloy steel tubes engineered to withstand high temperatures and pressures in industrial environments. Designed primarily for boiler, superheater, and heat exchanger applications, these tubes offer superior corrosion resistance and high-temperature strength.
Manufactured in accordance with ASTM A213 / ASME SA213 specifications, T91 Alloy Steel Tubes contain elevated chromium and molybdenum contents, which enhance oxidation resistance and creep strength, making them suitable for critical power generation and petrochemical applications. The seamless construction ensures structural integrity under thermal stress and cyclic loading.
These tubes undergo stringent quality controls including tensile, flattening, hardness, and hydrostatic testing to ensure they meet industry standards. Their excellent mechanical properties, such as minimum tensile strength of 585 MPa and yield strength of 415 MPa, allow for reliable performance in high-pressure boiler systems operating up to 600°C.
ASTM A213 T91 Tubes are compatible with standard fabrication processes including bending, welding, and flanging. They are widely used in steam boilers, power plants, and petrochemical facilities where longevity and resistance to corrosion and thermal fatigue are essential.
Available in various sizes and thicknesses, these tubes provide engineers with flexible solutions for demanding industrial piping systems, combining durability, safety, and cost efficiency.
Dimensions and performance data for ASTM A213 T91 Tubes
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.08-0.12 |
| Manganese (Mn) | 0.30-0.60 |
| Phosphorus (P) | ≤0.020 |
| Sulfur (S) | ≤0.010 |
| Silicon (Si) | 0.20-0.50 |
| Chromium (Cr) | 8.00-9.50 |
| Molybdenum (Mo) | 0.85-1.05 |
| Vanadium (V) | 0.18-0.25 |
| Nitrogen (N) | 0.03-0.07 |
| Property | Value |
|---|---|
| Tensile Strength, min (MPa) | 585 |
| Yield Strength, min (MPa) | 415 |
| Elongation, min (%) | 20 (Longitudinal) |
| Hardness, max (HB) | 217 |
| Parameter | Range | Standard |
|---|---|---|
| Inside Diameter | 1/8" to 5" | 3.2 mm to 127 mm |
| Wall Thickness | 0.015" to 0.500" | 0.4 mm to 12.7 mm |
| Length | 5–7 m / 9–13 m | SRL / DRL |
| Schedule | 40 to 160 | STD, XS, XXS |
| Property | Value | Unit |
|---|---|---|
| Max Service Temperature | 650 | °C |
| Tensile Strength | 415–690 | MPa |
| Yield Strength | 205–520 | MPa |
| Elongation | 20–30 | % |
Key advantages that make ASTM A213 alloy tubes a preferred choice in high-temperature and corrosive environments.
Maintains structural integrity under extreme heat, ideal for boilers, heat exchangers, and superheaters.
Chromium and molybdenum ensure excellent resistance to oxidation and chemical attack in aggressive media.
Offers high tensile and yield strength, ensuring safe performance under high pressure and temperature.
Durable construction and corrosion resistance extend operational life and minimize maintenance downtime.
Precision manufacturing ensures uniform wall thickness and surface finish, optimizing heat transfer and fit.
Widely used in power generation, petrochemical, and thermal processing industries due to its performance and reliability.
ASTM A213 T91 Tubes are widely used in various industries due to their excellent high-temperature and high-pressure performance.
Utilized in boilers, superheaters, and reheaters within steam power plants due to their high-temperature resistance and durability.
Employed in refineries and chemical plants for transporting high-temperature fluids and gases, ensuring safety and efficiency.
Ideal for use in heat exchangers where thermal stability and corrosion resistance are critical under fluctuating temperatures.
Commonly used in high-pressure boilers and superheaters, offering excellent performance under extreme thermal conditions.
Applied in the extraction and processing of oil and gas, handling high-pressure and high-temperature fluids effectively.
Suitable for equipment in chemical industries where resistance to corrosive substances and high temperatures is essential.
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