Type 316 is an austenitic chromium-nickel-stainless steel containing molybdenum. This addition increases general corrosion resistance, improves resistance to pitting from chloride ion solutions, and provides increased strength at elevated temperatures. Properties are similar to those of Type 304/304L except that this alloy is somewhat stronger at elevated temperatures. Corrosion resistance is improved, particularly against sulfuric, hydrochloric, acetic, formic and tartaric acids; acid sulfates and alkaline chlorides. Type 316L is an extra-low carbon version of Type 316 that minimizes harmful carbide precipitation during welding.
316L Grade Specification
- 316: UNS: S31600
- 316: EN-DIN 1.4401
- 316L: UNS: S31603
- 316L: EN-DIN: 1.4404
Chemical Composition of 316L Stainless Steel
| C | Mn | P | S | Si | Cr | Ni | Mo | N | Fe |
| 0.03 | 2.00 | 0.045 | 0.030 | 0.75 | 16.0-18.0 | 10.0-14.0 | 2.0-3.0 | 0.1 | Bal |
Typical Mechanical Properties
- Annealed
- Heat Treatment: 1900-2050°F (1038-1121°C)
- Tensile Strength: 75 – 105 ksi (515-725 MPa)
- Suggested Operating Conditions: -200°F to 1700°F (-184°C to 927°C)
- 1/4 Hard
- Heat Treatment: (Stress relieve 600-900°F as needed)
- Tensile Strength: 125 ksi min (860 MPa)
- Suggested Operating Conditions: -200°F to 550°F (-184°C to 288°C)
- 1/2 Hard
- Heat Treatment: (Stress relieve 600-900°F as needed)
- Tensile Strength: 150 ksi min (1030 MPa)
- Suggested Operating Conditions: -200°F to 550°F (-184°C to 288°C)
- Spring Temper
- Heat Treatment: (Stress relieve 600-900°F as needed)
- Tensile Strength: 185 ksi min (1275 MPa)
- Suggested Operating Conditions: -200°F to 550°F (-184°C to 288°C)
Application of 316L Stainless Steel Strip
Exhaust manifolds, Furnace parts, Heat exchangers, Jet engine parts, Pharmaceutical and photographic equipment, Valve and pump trim, Tubing, Chemical equipment, Digesters, Tanks, Evaporators, Paper and textile processing equipment, Food processing equipment, and Marine parts.
