316 / 316L
UNS S31600 / S31603
Tensile Strength
≥ 485 MPa (70 ksi)
Yield Strength (0.2%)
≥ 170 MPa (25 ksi)
Elongation
≥ 40%
Hardness
≤ 90 HRB / ≤ 217 HB
Overview
The marine-grade stainless steel. Addition of molybdenum (2-3%) significantly improves resistance to chlorides, acids, and pitting corrosion. 316L (low carbon) is the preferred choice for all welded applications. The standard material for offshore, desalination, and chemical processing industries.
Chemical Composition (wt%)
| Element | Min | Max |
|---|---|---|
| C (Carbon) | — | 0.08 |
| Mn (Manganese) | — | 2 |
| Si (Silicon) | — | 0.75 |
| P (Phosphorus) | — | 0.045 |
| S (Sulfur) | — | 0.03 |
| Cr (Chromium) | 16 | 18 |
| Ni (Nickel) | 10 | 14 |
| Mo (Molybdenum) | 2 | 3 |
| N (Nitrogen) | — | 0.1 |
Mechanical Properties
| Property | Value | Condition |
|---|---|---|
| Tensile Strength | ≥ 485 MPa (70 ksi) | — |
| Yield Strength (0.2%) | ≥ 170 MPa (25 ksi) | — |
| Elongation | ≥ 40% | — |
| Hardness | ≤ 90 HRB / ≤ 217 HB | annealed |
| Density | 8.0 g/cm³ | — |
Physical Properties
| Property | Value |
|---|---|
| Melting Range | 1375 – 1400 °C |
| Thermal Conductivity | 15.9 W/m·K (at 100°C) |
| Electrical Resistivity | 0.74 µΩ·m (at 20°C) |
Corrosion Resistance
Superior to 304 in chloride and acidic environments. Excellent resistance to sulfuric acid, phosphoric acid, and many organic chemicals. Good performance in marine atmospheres and mildly saline waters. PREN (Pitting Resistance Equivalent Number) typically 24-27. Preferred grade for chemical tankers, offshore platforms, and pulp & paper facilities.
Typical Applications
Offshore oil & gas platformsDesalination plantsChemical tankers and storagePharmaceutical processingPulp & paper equipmentFood processing (acidic foods)
Related Standards
ASTM A312ASTM A240ASTM A276ASTM A269ASME SA-312EN 1.4401 / 1.4404
Available Products in This Material
Browse our product range manufactured in 316 / 316L: