ASTM A213 T5 Seamless Alloy Steel Heat Exchanger & Boiler Tubes
Our ASTM A213 Grade T5 (ASME SA213 T5) seamless low-alloy steel tubes are specifically engineered to thrive under demanding, high-temperature, high-pressure, and corrosive industrial environments. Containing a balanced addition of Chromium (4.00% - 6.00%) and Molybdenum (0.45% - 0.65%), these ferritic steel tubes provide superior thermal conductivity, improved creep resistance, and resistance to high-temperature oxidation compared to standard carbon steels.
Whether operating in power station superheaters, petrochemical cracking furnaces, or heavy-duty shell-and-tube heat exchangers, our ASTM A213 T5 tubes ensure optimum thermal efficiency and extended service life.
Key Applications
- High-pressure boilers and superheater coils
- Shell and tube heat exchangers
- Petrochemical cracking furnaces and reheaters
- Power generation plants and steam turbines
- Oil refinery process units
Technical Specifications & Chemical Composition
All ASTM A213 Grade T5 tubes are supplied in full compliance with global quality and safety standards. The alloy profile is carefully refined to balance high-tensile strength with optimal ductility and thermal efficiency.
Chemical Composition (ASTM A213 / ASME SA213 Grade T5)
| Element |
Specification Limit (%) |
| Carbon (C) |
0.15 max |
| Manganese (Mn) |
0.30 – 0.60 |
| Phosphorus (P) |
0.025 max |
| Sulfur (S) |
0.025 max |
| Silicon (Si) |
0.50 max |
| Chromium (Cr) |
4.00 – 6.00 |
| Molybdenum (Mo) |
0.45 – 0.65 |
Mechanical Properties
Our T5 alloy tubes undergo rigorous heat treatment (Full Annealing, Isothermal Annealing, or Normalizing and Tempering) to meet exact mechanical benchmarks.
| Property |
Value (Imperial) |
Value (Metric) |
| Tensile Strength |
≥ 60 ksi |
≥ 415 MPa |
| Yield Strength |
≥ 30 ksi |
≥ 205 MPa |
| Elongation (2 in. or 50 mm) |
≥ 30% |
≥ 30% |
| Hardness (Max) |
163 HBW / 85 HRB |
170 HV |
Standard Dimensional Ranges & Tolerances
We provide a wide spectrum of seamless tubing configurations designed to meet specific engineering criteria:
- Outer Diameter (OD): 6.35 mm to 127 mm (1/4 in. to 5 in.)
- Wall Thickness (WT): 0.9 mm to 12.7 mm (0.035 in. to 0.500 in.)
- Schedules / SWG: SWG 10 to 20, SCH 40, SCH 80, SCH XS, and custom minimum/average wall thicknesses.
- Length Options: Single Random (5 - 7 m), Double Random (10 - 12 m), or custom cut-to-length dimensions up to 22.5 meters.
- Tube Ends: Plain End (PE), Beveled End (BE) for welding, or Threaded.
Testing & Quality Control Standards
To guarantee maximum structural integrity in critical pressure systems, every batch of ASTM A213 T5 tubes undergoes comprehensive testing prior to dispatch:
-
Non-Destructive Testing (NDT):
- 100% Eddy Current Testing or Hydrostatic Pressure Testing per ASTM A1016.
- Ultrasonic Testing (UT) available upon request for high-pressure installations.
-
Mechanical & Physical Testing:
- Tensile & Yield Testing: Verifies load capacities under high operational pressures.
- Flattening Test: Ensures weldability and absence of micro-cracking under stress.
- Flaring / Drift Expansion Test: Assures uniform wall thickness and ductility during tube sheet expansion.
- Hardness Testing: Confirms proper heat treatment execution.
-
Metallurgical Analysis:
- Grain size verification and PMI (Positive Material Identification) testing.
- Intergranular corrosion resistance and microstructural evaluation.
-
Surface Treatment & Finishing:
- Supplied with passivated, bright-annealed, or anti-rust varnished surface protection.
- Full Material Test Reports (MTR) provided in accordance with EN 10204 3.1 / 3.2.