A213 T5 Chrome Moly Seamless Tubes
ASTM A213 T5 is a chromium-molybdenum alloy seamless steel tube specified by the standards ASTM A213/A213M and ASME SA213/SA213M. Designed specifically for high-temperature and high-pressure service conditions, it is primarily used in critical equipment such as boilers, superheaters, and heat exchangers, offering exceptional heat resistance and creep resistance.
ASTM A213 T5 seamless steel pipe, a critical material for boilers, superheaters, and heat exchangers, plays a vital role in ensuring the safe and reliable operation of core industrial sectors such as energy and petrochemicals. This chromium-molybdenum alloy steel tube delivers exceptional durability and performance under high-temperature and high-pressure conditions, thanks to its precisely balanced chemical composition and mechanical properties.
According to the ASTM A213/A213M standard, Grade T5 steel contains 4–6% chromium (Cr) and 0.45–0.65% molybdenum (Mo). This specific alloying strategy provides:
Excellent creep resistance at temperatures up to 593°C, enabling long-term structural stability under continuous stress
Enhanced oxidation and corrosion resistance in steam and high-temperature gas environments
Good weldability and fabricability, making it suitable for complex heat transfer systems
Superior microstructural stability, minimizing degradation during thermal cycling
A213 T5 chromium-molybdenum alloy steel pipes supplied by GNEE Group are available in outer diameters from 1/2 inch to 36 inches (DN25 to DN900) and wall thicknesses up to SCH 160. These pipes offer outstanding oxidation resistance, creep strength, and long-term structural stability at high temperatures, making them ideal for demanding applications in power generation, petrochemical, and high-pressure boiler systems. For pricing details, please contact GNEE Group directly.
A213 T5 Chrome Moly Alloy Heater Tubes Chemical Composition
| Composition | C | Si | Mn | P | S | Cr | Mo |
|---|---|---|---|---|---|---|---|
| Min | - | - | 0.3 | - | - | 4 | 0.45 |
| Max | 0.15 | 0.5 | 0.6 | 0.025 | 0.025 | 6 | 0.65 |
A213 T5 Chrome Moly Seamless Tubes Mechanical properties
| Tensile Strength σb Mpa |
Yield point σs Mpa |
Elongation after fracture or elongation δ % |
Hardness HBW |
|---|---|---|---|
| ≥415 | ≥205 | ≥30 | ≤163 |
Manufacturing Process of ASME SA213 T5 Seamless Steel Pipes
1. Steel Ingot Preparation
Select raw materials (low-alloy steel)
Smelt and refine to achieve precise chemical composition (Cr: 4–6%, Mo: 0.45–0.65%, C≤0.15%)
Cast into high-purity ingots
2. Pipe Forming
Hot Rolling: Heat ingots to 1,100–1,250°C, then pierce and roll into hollow shells
Cold Rolling/Drawing: For precision dimensions, process through mandrel mills or cold-drawing benches
3. Heat Treatment
Normalizing: Heat to 900–980°C → Air-cool to refine grain structure
Tempering: Reheat to 675–725°C → Cool to optimize toughness (HBW ≤163)
4. Quality Control
| Step | Method | Standard Requirement |
|---|---|---|
| Dimensional Check | Laser gauging | OD/WT tolerance per ASME SA213 |
| Non-Destructive Test | Ultrasonic (UT) / Eddy Current (ET) | Zero critical defects |
| Mechanical Test | Tensile/Hardness testing | σ≥415 MPa, σs≥205 MPa, δ≥30%, HBW≤163 |
| Hydrostatic Test | Water pressure ≥70 MPa | No leakage or deformation |
Key Process Advantages
Microstructural Stability: Ferrite-pearlite matrix resists creep below 593°C
Surface Integrity: Scale-free finish after pickling/passivation
Performance Validation: 100% tested for high-pressure service in boilers/heat exchangers
Applications of ASME SA213 T5 Seamless Steel Pipes in Industrial Sectors
Petroleum & Chemical Industry:
Widely used for transporting high-temperature, high-pressure, and corrosive media such as oil and gas, steam, and chemicals, where resistance to creep, oxidation, and sulfidation is critical.
Power Generation Industry:
Employed in fossil-fuel power plants and nuclear power stations for:
High-pressure steam pipelines
Reheater and superheater tubes
Flue gas ducting systems
Operating reliably under sustained temperatures up to 593°C and pressures exceeding 15 MPa.
Shipbuilding:
Utilized in marine boiler systems, exhaust gas recovery units, and auxiliary steam lines, where compact design and long-term structural integrity under cyclic thermal loads are essential.
Metallurgy & Heavy Machinery:
Applied in:
Heat treatment furnaces
Continuous casting equipment
High-temperature process piping in steel and non-ferrous metal production
A213 T5 Alloy Steel Heat Exchanger Tube Factory
A213 T5 Low Alloy Steel Superheater Tube Packaging and shipping
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