ASTM A213 TP316 Seamless Tubes (UNS S31600)
ASTM A213 TP316 (UNS S31600) Stainless Steel Seamless Tubes are molybdenum-bearing austenitic stainless steel tubes designed for high corrosion resistance, elevated temperature strength, and superior performance in chemical, marine, and industrial environments. Known for their exceptional resistance to chlorides, acids, and pitting, TP316 tubes are widely used in heat exchangers, condensers, superheaters, and boiler systems. With excellent mechanical strength, exceptional weldability, and outstanding resistance to chemicals and acids, ASTM A213 TP316 tubes are a preferred choice for industries that demand reliability in corrosive environments such as marine engineering, petrochemical processing, and pharmaceutical manufacturing. The steel grade maintains stability at high temperatures, ensuring minimal thermal expansion and resistance to oxidation during continuous operation.
Key Features
- Excellent corrosion resistance due to molybdenum content
- High strength at elevated temperatures
- Superior resistance to pitting & crevice corrosion
- Good weldability and formability
- Ideal for high-pressure & high-temperature service
- Long operational life in aggressive chemical environments
Equivalent Grades
| Standard | Grade |
|---|---|
| UNS | S31600 |
| WNR | 1.4401 |
| EN | X5CrNiMo17-12-2 |
| JIS | SUS 316 |
| BS | 316S31 |
Available Sizes
- Outer Diameter (OD): 6mm to 101.6mm
- Wall Thickness: 0.5mm to 12.7mm
- Length: Up to 12 Meters
ASTM A213 TP316 Chemical Composition
| Element | % Composition |
|---|---|
| Carbon (C) | 0.08 max |
| Manganese (Mn) | 2.00 max |
| Phosphorus (P) | 0.045 max |
| Sulfur (S) | 0.030 max |
| Silicon (Si) | 1.00 max |
| Chromium (Cr) | 16.0 – 18.0 |
| Nickel (Ni) | 10.0 – 14.0 |
| Molybdenum (Mo) | 2.00 – 3.00 |
| Nitrogen (N) | 0.10 max |
| Iron (Fe) | Balance |
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 | 1375–1400°C |
| Thermal Conductivity | 16.3 W/m·K |
| Electrical Resistivity | 0.0749 µΩ·m |
| Modulus of Elasticity | 193 GPa |
Types TP316 Tubes
- ASTM A213 TP316 Seamless Tube
- TP316 Heat Exchanger Tubes
- TP316 Superheater Tubes
- TP316 Boiler Tubes
- TP316 Instrumentation Tubes
- TP316 High-Pressure Tubes
Application
- Chemical Processing
- Pharmaceutical Equipment
- Heat Exchangers & Condensers
- Power Plants & Boilers
- Marine & Offshore
- Oil & Gas Refineries
- Food & Beverage Processing
- Petrochemical Plants



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