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Description
316L is a molybdenum containing austenitic stainless steel, with improved corrosion resistance over 304/304L stainless steel. The increased levels of chromium, nickel and molybdenum over 314L stainless steel improve chloride pitting resistance and general corrosion. Through the controlled addition of nitrogen it is common for 316L to meet the mechanical properties of 3167 straight grade, while maintaining a low carbon content.
Chemistry
| Item | Ni | Cr | Mo | Mn | Si | C | N | S | P | Fe |
|---|---|---|---|---|---|---|---|---|---|---|
| MIN | 11.0 | 18.0 | 3.0 | - | - | - | - | - | - | - |
| MAX | 15.0 | 20.0 | 4.0 | 2.0 | 0.75 | 0.03 | 0.1 | 0.03 | 0.045 | Balance |
Specifications
ASME SA 240
ASTM A 240
UNS S31703
W. NR./EN 1.4438
Inventory
316L Plate
Common Trade Names
316 Stainless steel , 316L Stainless steel , 316LMN stainless steel
Features
Improved general and localized corrosion to 316/316L stainless
Good formability
Good weldability
Applications
Flue gas desulfurization systems
Chemical process vessels
Petrochemical
Pulp and paper
Condensers in power generation
Physical Properties
Density: 0.285 lb/inch3
Melting Point: 2540 - 2630°F
Poisson's Ratio: 0.3
Electrical Resistivity: 475 Ohm-circ mil/ft
| Temperature,°F | 70 | 212 | 392 | 572 |
| 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 | - | - | - |
*70°F to indicated temperature
Mechanical Properties
Minimum Specified Properties, ASTM A 240
| 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 | 76 | 71 | 71 | 71 | 68 | 51 | 31 |
| 0.2% Yield Strength, ksi | 42 | - | - | - | 27 | 23 | 22 | - |
| Charpy Impact V-notch, ft-lbs | 65 - 100 | - | - | - | - | - | - | - |
