ASTM A249 TP316L Welded Austenitic Stainless Steel Tube - Seamless Welded Construction for Heat Exchanger, Boiler & Condenser Applications
ASTM A249 TP316L Welded Austenitic Stainless Steel Tube - Seamless Welded Construction for Heat Exchanger, Boiler & Condenser Applications
YUHONG Group, with over 35 years of industrial expertise and a global network serving 85 countries, is a specialized manufacturer of high-performance stainless steel tubing. Our ASTM A249 TP316L Welded Tubes are produced under strict quality control, meeting international standards for critical applications in heat exchangers, boilers, and condensers. We ensure full traceability and reliability for global projects, delivering tubes that combine excellent corrosion resistance with proven durability in demanding environments.
Chemical Composition Requirements (TP316L - UNS S31603)
| Element | Composition (%) |
| Carbon (C), max | 0.03 |
| Manganese (Mn), max | 2 |
| Phosphorus (P), max | 0.045 |
| Sulfur (S), max | 0.03 |
| Silicon (Si), max | 1 |
| Chromium (Cr) | 16.0-18.0 |
| Nickel (Ni) | 10.0-14.0 |
| Molybdenum (Mo) | 2.00-3.00 |
Mechanical Properties (TP316L)
| Property | Requirement |
| Tensile Strength, min | 70 ksi (485 MPa) |
| Yield Strength, min | 25 ksi (170 MPa) |
| Elongation in 2 in., min | 35% |
| Hardness, max | 90 HRB |
Standard Test Requirements
| Test Type | Requirement |
| Hydrostatic Test | Required for each tube (or NDT as specified) |
| Flattening Test | On specimens from each of two tubes per lot |
| Hardness Test | Rockwell test on two tubes per lot |
| Reverse-Bend Test | For weld integrity verification |
Key Product Advantages
- Excellent Corrosion Resistance: The TP316L grade with molybdenum content provides superior resistance to chlorides and acidic environments, making it ideal for chemical processing and marine applications.
- Good Weldability and Formability: Low carbon content minimizes carbide precipitation during welding, allowing for reliable fabrication without post-weld heat treatment in most cases.
- High-Temperature Performance: Maintains mechanical strength and oxidation resistance at elevated temperatures, suitable for boiler and heat exchanger service.
- Cost-Effective Solution: Welded construction offers economic advantages compared to seamless tubes while maintaining performance for many applications.
- Quality Assurance: Manufactured in accordance with ASTM A249 standards with comprehensive testing including hydrostatic, flattening, and hardness tests.
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