ASTM A213 TP316L Stainless Steel Seamless Tube (UNS S31603)
ASTM A213 TP316L (UNS S31603) Stainless Steel Seamless Tubes are low-carbon austenitic stainless steel tubes specifically developed for applications requiring superior corrosion resistance and enhanced weldability. The reduced carbon content in TP316L minimizes carbide precipitation during welding, making it ideal for use in corrosive environments where the risk of intergranular corrosion is high. TP316L offers excellent resistance to chlorides, acids, and chemical exposure, making it a preferred choice in industries such as pharmaceutical processing, petrochemical plants, food-grade applications, and marine engineering.
These tubes are widely used in high-temperature and high-pressure environments, including boilers, heat exchangers, superheaters, condensers, and instrumentation systems. Known for their outstanding mechanical strength, oxidation resistance, and long service life, ASTM A213 TP316L seamless tubes ensure optimal performance under demanding operating conditions. The material also demonstrates excellent formability, cleanability, and hygienic properties, making it suitable for sanitary and sterile processing applications.
Key Features
- Low carbon version of 316 for improved weldability
- Minimizes carbide precipitation and intergranular corrosion
- Excellent resistance to chlorides and aggressive chemicals
- Suitable for high-temperature & high-pressure service
- Superior pitting and crevice corrosion resistance
- High tensile strength and excellent ductility
- Ideal for sanitary, sterile, and critical process applications
- Excellent long-term performance and durability
Equivalent Grades
| Standard | Grade |
|---|---|
| UNS | S31603 |
| WNR | 1.4404 / 1.4435 |
| EN | X2CrNiMo17-12-2 |
| JIS | SUS 316L |
| BS | 316S11 |
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 TP316L Chemical Composition
| Element | % |
|---|---|
| C | 0.03 max |
| Mn | 2.00 max |
| Si | 1.00 max |
| P | 0.045 max |
| S | 0.030 max |
| Cr | 16.0–18.0 |
| Ni | 10.0–14.0 |
| Mo | 2.00–3.00 |
| N | 0.10 max |
| Fe | Balance |
ASTM A213 TP316L Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | 485 MPa min |
| Yield Strength | 170 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 | 16.3 W/m·K |
| Modulus of Elasticity | 193 GPa |
Types
- TP316L Seamless Heat Exchanger Tubes
- TP316L Boiler Tubes
- TP316L Superheater Tubes
- TP316L Condenser Tubes
- TP316L High-Pressure Tubes
- TP316L Instrumentation Tubes
Application
- Petrochemical & Chemical Plants
- Pharmaceutical & Biotech Processing
- Food & Beverage Industry
- Marine & Offshore Equipment
- Heat Exchangers & Condensers
- Power Generation Boilers
- Pulp & Paper Industry
- Oil & Gas Refining Systems
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