ASTM A269 TP316 Stainless Steel Tubes
ASTM A269 TP316 is a premium austenitic stainless steel grade enriched with molybdenum (Mo), providing superior corrosion resistance compared to TP304. Known for its excellent resistance to pitting, crevice corrosion, and chemical attack, TP316 is widely used in harsh environments such as chemical processing, marine applications, food and beverage systems, and pharmaceutical production.
These tubes offer exceptional durability, weldability, and cleanliness, making them suitable for fluid transport, structural applications, and sanitary processing lines. ASTM A269 TP316 tubes are available in seamless and welded forms, with polished, annealed, and bright-annealed finishes.
Key Features
- Enhanced corrosion resistance due to molybdenum content
- Excellent resistance to pitting and crevice corrosion
- Superior durability in chloride and acidic environments
- Good weldability and formability
- Smooth internal surface for improved flow characteristics
- High-temperature resistance and strength
- Suitable for sanitary and high-purity applications
Specification
| Specification | Details |
|---|---|
| Standard | ASTM A269 |
| Grade | TP316 |
| Material | Austenitic Stainless Steel |
| Process | Seamless / Welded |
| Surface Finish | Annealed & Pickled / Bright Annealed / Polished |
| Outer Diameter | 6 mm – 101.6 mm |
| Wall Thickness | 0.5 mm – 6 mm |
| Length | Single Random, Double Random, Cut-to-Length |
| Forms | Round, Square, Rectangular, U-Tube |
| Tolerance | As per ASTM A269 |
Equivalent Grades
| Standard | Grade |
|---|---|
| UNS | S31600 |
| EN | 1.4401 |
| JIS | SUS 316 |
| DIN | X5CrNiMo17-12-2 |
Available Sizes
-
Outer Diameter: 6 mm to 101.6 mm
-
Wall Thickness: 0.5 mm to 6 mm
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Length: Up to 6 meters (custom lengths available)
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Forms: Round Tube, Square Tube, Rectangular Tube, U-Bend Tube
ASTM A269 TP316 Chemical Composition (%)
| Element | Min | Max |
|---|---|---|
| Carbon (C) | – | 0.08 |
| Manganese (Mn) | – | 2.00 |
| Silicon (Si) | – | 0.75 |
| Phosphorus (P) | – | 0.045 |
| Sulfur (S) | – | 0.030 |
| Chromium (Cr) | 16.0 | 18.0 |
| Nickel (Ni) | 10.0 | 14.0 |
| Molybdenum (Mo) | 2.00 | 3.00 |
| Nitrogen (N) | – | 0.10 |
| Iron (Fe) | Balance | Balance |
ASTM A269 TP316 Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | 515 MPa min |
| Yield Strength (0.2% Proof) | 205 MPa min |
| Elongation | 35% min |
| Hardness (Rockwell B) | 95 max |
ASTM A269 TP316 Physical Properties
| Property | Value |
|---|---|
| Density | 8.0 g/cm³ |
| Melting Point | 1375 – 1400°C |
| Thermal Conductivity | 16.3 W/m·K |
| Electrical Resistivity | 0.74 μΩ·m |
| Modulus of Elasticity | 193 GPa |
| Specific Heat | 500 J/kg·K |
Types of ASTM A269 TP316 Tubes
- Seamless Tubes
- Welded Tubes
- Bright Annealed Tubes
- Annealed & Pickled Tubes
- Polished Tubes (180G / 320G / 600G finish)
- Heat Exchanger Tubes
- Instrumentation Tubes
- Sanitary / Hygienic Tubes
- U-Bent Tubes
Application
- Chemical & Petrochemical Industries
- Food, Dairy & Beverage Processing
- Pharmaceutical & Biotechnology Systems
- Marine and Offshore Applications
- Heat Exchangers & Condensers
- Oil & Gas Processing Lines
- Pulp & Paper Industry
- High-Purity Water Systems
- Fertilizer & Chemical Manufacturing
- Architectural & Structural Tubing
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