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Product Specification for ASTM A179/SA179 Heat Exchanger Steel Tubes
ASTM A179/SA179 specifies the requirements for seamless cold-drawn low-carbon steel tubes used in heat exchangers, condensers, and similar heat-transfer equipment. These tubes are designed for optimal thermal efficiency, durability, and resistance to corrosion in high-temperature and high-pressure environments.
The chemical composition of ASTM A179/SA179 steel tubes ensures excellent weldability and mechanical performance. Key elements include:
| Element | Composition Range (%) |
|---|---|
| Carbon (C) | 0.06–0.18 |
| Manganese (Mn) | 0.27–0.63 |
| Phosphorus (P) | ≤0.035 |
| Sulfur (S) | ≤0.035 |
| Iron (Fe) | Balance |
Note: The low carbon content enhances formability and reduces brittleness, while controlled manganese levels improve strength and hardenability
ASTM A179/SA179 tubes are subjected to rigorous cold-drawing and heat-treatment processes to achieve the following mechanical properties:
| Property | Requirement |
|---|---|
| Tensile Strength | ≥325 MPa (47,000 psi) |
| Yield Strength | ≥180 MPa (26,000 psi) |
| Elongation (in 50 mm) | ≥35% |
| Hardness | ≤72 HRB (Rockwell B) |
Key Notes:
The cold-drawn process ensures a smooth surface finish (critical for heat transfer efficiency)
Tubes are heat-treated to eliminate residual stresses and enhance dimensional stability.
Surface Finish: High surface smoothness to minimize fouling and maximize heat transfer efficiency.
Dimensions: Outer Diameter: 6mm to 140 mm (0.5 in to 5 in)
Wall Thickness: 1 mm to 25 mm (customizable per application).
Manufacturing Process: Seamless cold-drawn production to ensure uniform wall thickness and structural integrity.
ASTM A179/SA179 tubes are widely used in:
Heat Exchangers and Condensers: For efficient heat transfer in industrial and power generation systems.
Boiler Components: Including water walls, superheaters, and economizers in high-pressure boilers.
Oil and Gas Refining: Suitable for heat recovery systems and cooling units.
Chemical Processing: Resistant to corrosive fluids and high-temperature environments.
ASTM A179/A179M: Primary standard for material composition and mechanical properties.
ASME SA-179/SA-179M: Compliant with ASME Boiler and Pressure Vessel Code for high-pressure applications.
Quality Assurance: Tubes undergo non-destructive testing (NDT), hydrostatic testing, and dimensional inspections.
Tubes are coated with anti-rust oil and packed in wooden crates to prevent corrosion during transit.
Storage recommendations: Dry, ventilated environments to avoid moisture exposure.
Note: Custom specifications (e.g., special lengths, surface treatments) are available upon request. For detailed technical data, refer to ASTM A179/A179M standards or contact the manufacturer.
References
ASTM A179/A179M Standard Specification213.
ASME Boiler and Pressure Vessel Code13.
Manufacturer Technical Data Sheets56.
This document is for informational purposes only. Specifications may vary based on regional standards or customer requirements.