ASTM A213 TP317L Stainless Steel Tubes (UNS S31703)
ASTM A213 TP317L (UNS S31703) Stainless Steel Tubes are a low-carbon version of TP317 stainless steel, designed specifically for applications requiring superior corrosion resistance, especially against pitting and crevice corrosion in chloride and acidic environments. The lower carbon content in TP317L helps prevent carbide precipitation during welding, making this grade highly suitable for applications involving corrosive media and welded structures.
With higher chromium, nickel, and molybdenum content than standard 316/316L, TP317L provides exceptional resistance to chemical attacks from sulfuric acids, halides, and industrial solvents. This alloy is especially preferred in industries such as chemical processing, petrochemicals, marine engineering, pulp & paper, and pollution control equipment. ASTM A213 TP317L tubes offer excellent performance in high-temperature and high-pressure service, making them ideal for heat exchangers, superheaters, and boiler tubes.
Key Features
- Low carbon version for improved weldability
- Minimizes carbide precipitation and intergranular corrosion
- Higher corrosion resistance than TP316/316L
- Superior resistance to pitting & crevice corrosion
- Ideal for aggressive chloride & acidic environments
- Excellent high-temperature strength
- Good formability, ductility, and machining performance
- Long-lasting and reliable in harsh operating conditions
Equivalent Grades
| Standard | Grade |
|---|---|
| UNS | S31703 |
| WNR | 1.4438 |
| EN | X2CrNiMo18-15-4 |
| JIS | SUS 317L |
| BS | 317S16 |
Available Sizes
- Outer Diameter: 6 mm to 101.6 mm
- Wall Thickness: 0.5 mm to 12.7 mm
- Length: Up to 12 meters
ASTM A213 TP317L Chemical Composition
| Element | % |
|---|---|
| C | 0.03 max |
| Mn | 2.00 max |
| Si | 1.00 max |
| P | 0.045 max |
| S | 0.030 max |
| Cr | 18.0–20.0 |
| Ni | 11.0–15.0 |
| Mo | 3.00–4.00 |
| N | 0.10 max |
| Fe | Balance |
ASTM A213 TP317L Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | 515 MPa min |
| Yield Strength | 205 MPa min |
| Elongation | 35% min |
| Hardness | 90 HRB max |
Physical Properties
| Property | Value |
|---|---|
| Density | 8.0 g/cm³ |
| Melting Point | 1370–1400°C |
| Thermal Conductivity | 16 W/m·K |
| Modulus of Elasticity | 193 GPa |
Types ASTM A213 TP317L Tubes
- TP317L Seamless Heat Exchanger Tubes
- TP317L Boiler & Superheater Tubes
- TP317L Condenser Tubes
- TP317L High-Pressure Tubing
- TP317L Instrumentation Tubes
Application
- Chemical & Petrochemical Industries
- Pulp & Paper Production
- Marine & Offshore Equipment
- Food & Beverage Processing
- Pharmaceutical Manufacturing
- Heat Exchangers & Condensers
- Desalination Plants
- Pollution Control Equipment
- Oil & Gas Refinery Systems
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