ASTM A20 T1A Heat Exchange Tube
Introduction
ASTM A20 T1A Heat Exchange Tubes are engineered for high-temperature service and excellent heat transfer performance in boilers, superheaters, condensers, and heat exchangers. Manufactured from low-alloy steel with superior creep strength, these tubes are designed to withstand elevated temperatures and harsh operating environments. Their stability, oxidation resistance, and uniform wall thickness make them an ideal choice for power generation, petrochemical, refineries, and thermal process industries.
Key Features
- High Temperature Strength: Maintains mechanical performance under prolonged heat exposure.
- Excellent Heat Conductivity: Optimized for efficient thermal transfer in demanding applications.
- Good Oxidation Resistance: Withstands scaling and degradation at elevated temperatures.
- Dimensional Accuracy: Manufactured to strict ASTM standards for consistent quality.
- Long Service Life: Durable material suited for severe operating conditions.
- Customizable Length & Ends: Available in seamless or welded form with plain, beveled, or threaded ends.
Available Sizes & Dimensions
- Outer Diameter (OD): 12.7 mm to 101.6 mm (½” to 4″)
- Wall Thickness: 1.2 mm to 12.5 mm (SCH 20 to SCH 160 & custom)
- Length: 1 meter to 14 meters (custom cut lengths available)
- Standards: ASTM A20 / ASME SA20
- Forms: Seamless, Welded, Cold Drawn, Hot Finished
Grade T1A Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.10 – 0.20 |
| Manganese (Mn) | 0.30 – 0.80 |
| Silicon (Si) | 0.10 – 0.50 |
| Phosphorus (P) | ≤ 0.025 |
| Sulfur (S) | ≤ 0.025 |
| Chromium (Cr) | 0.50 – 0.80 |
| Molybdenum (Mo) | 0.44 – 0.65 |
| Nickel (Ni) | ≤ 0.40 |
| Copper (Cu) | ≤ 0.40 |
T1A Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | ≥ 415 MPa |
| Yield Strength | ≥ 255 MPa |
| Elongation | ≥ 30% |
| Hardness | ≤ 179 HB |
| Impact Strength | Good at elevated temperatures |
T1A Physical Properties
| Property | Value |
|---|---|
| Density | 7.85 g/cm³ |
| Melting Point | ~1425 – 1540 °C |
| Thermal Conductivity | 34 – 36 W/m·K |
| Electrical Resistivity | 0.15 µΩ·m |
| Modulus of Elasticity | 200 – 215 GPa |
Types of ASTM A20 T1A Heat Exchange Tube
- Seamless Heat Exchange Tubes
- Welded Heat Exchange Tubes
- U-Bend Heat Exchanger Tubes
- Finned Tubes
- Straight Length Tubes
- Cold Drawn & Hot Rolled Tubes
Applications
ASTM A20 T1A Heat Exchange Tube are widely used across high-temperature and high-pressure environments:
- Power Plants (Boilers, Superheaters, Economizers)
- Petrochemical & Refinery Heat Exchangers
- Thermal Oil & Gas Heating Systems
- Condensers & Coolers
- Process Heaters
- Industrial Steam Generation
- Energy, Chemical & Fertilizer Industries
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