Stainless Steel 316 & 316L is the most commonly used austenitic stainless steel in the chemical process industry. The addition of molybdenum increases general corrosion resistance, improves chloride pitting resistance and strengthens the alloy in high temperature service. Through the controlled addition of nitrogen it is common for 316/316L to meet the mechanical properties of 316 straight grade, while maintaining a low carbon content.
Chemistry
| Ni | Cr | Mo | Mn | Si | C | S | P | N | Fe | |
|---|---|---|---|---|---|---|---|---|---|---|
| MIN | 10.0 | 16.0 | 2.0 | – | – | – | – | – | – | – |
| MAX | 14.0 | 18.0 | 3.0 | 2.0 | 0.75 | 0.03 | 0.03 | 0.045 | 0.1 | Balance |
Specifications
AMS 5507, AMS 5648, AMS 5653
ASME SA 240, ASME SA 312, ASME SA 479
ASTM A 240, ASTM A 276, ASTM A 276 Condition A, ASTM A 276 Condition S, ASTM A 312, ASTM A 479
EN 1.4404
UNS S31600, UNS S31603
W. Nr./EN 1.4401
Werkstoff 1.4404
Inventory
316 / 316L Bar, 316 / 316L Coil, 316 / 316L Concentric Reducers, 316 / 316L Flanges, 316 / 316L Hex Bar, 316 / 316L Pipe, 316 / 316L Plate, 316 / 316L Round Bar, 316 / 316L Sheet, 316 / 316L Stub Ends, 316 / 316L Tees, 316 / 316L Welding Products
Common Trade Names
316 Stainless, 316L Stainless
Features
- Improved general and localized corrosion to 304/304L stainless
- Good formability
- Good weldability
Applications
- Food processing
- Marine
- Pulp & paper
- Chemical process vessels
- Pharmaceutical Equipment
Physical Properties
Density: 0.285 lb/inch3
Poisson’s Ratio: 0.3
Electrical Resistivity: 445 Ohm-circ mil/ft
| Temperature, °F | 70 | 212 | 932 | 1832 |
| Coefficient* of Thermal Expansion, in/in°F x 10-6 | – | 9.2 | 10.1 | 10.8 |
| Thermal Conductivity Btu • ft/ft2 • hr • °F |
7.8 | – | – | – |
| Modulus of Elasticity Dynamic, psi x 106 | 29 | – | – | – |
Mechanical Properties
Representative Tensile Properties
| Ultimate Tensile Strength, ksi | 75 |
| 0.2% Yield Strength, ksi | 30 |
| Elongation, % | 40 |
| Hardness MAX, Brinell | 217 |
Typical Tensile and Impact Properties
| Temperature, °F | 70 | 200 | 400 | 600 | 800 | 1000 | 1200 | 1400 |
| Ultimate Tensile Strength, ksi | 82.4 | 75.6 | 71.1 | 71.1 | 71.1 | 68.4 | 50.7 | 30.7 |
| 0.2 % Yield Strength, ksi | 42.4 | – | – | – | 26.5 | 23.4 | 22.6 | – |
| Charpy Impact V-notch, ft-lbs | 65 – 100 | – | – | – | – | – | – | – |