316 – Stainless Steel
316 Stainless Steel is often referred to as 316 Stainless or “marine grade stainless steel.” Its durability and corrosion resistance make it an excellent option in high stress environments.
316 Stainless Steel has excellent welding capabilities and post-weld annealing is recommended to maximize corrosion resistance. It is a great solution for applications involving severe corrosive conditions and demonstrates better properties than 304 Stainless Steel in regard to pitting and crevice corrosion in chloride environments. 316 Stainless Steel does perform well in acidic environments.
It can be rolled and folded easily, thus it can be converted and molded for a variety of operations. It is not easily machinable due to its toughness and ductile. It can be cold worked to increase hardness and tensile strength. It can be easily formed and drawn and will generally last longer than 304 Stainless Steel.
The melting range for 316 Stainless Steel is 2500°-2550°F. It has an annealing temperature between 1900°-2100°F but cannot be hardened by heat treatment. It is not recommended to be forged below 1700°F. Physical properties include:
- 80,000 psi Tensile Strength
- 30,000 psi Yield Strength
- 45% Elongation 4d
- 140 Hardness HB
- 0.799g/cm3 Density
Chemistry Composition:
| C | Mn | P | S | Si | Cr | Ni | Mo | |
|---|---|---|---|---|---|---|---|---|
| Min | – | – | – | – | – | 16.00 | 10.00 | 2.00 |
| Max | .08 | 2.00 | 0.045 | 0.030 | 1.00 | 18.00 | 14.00 | 3.00 |
Sizes/Shapes:
| Shape | Diameter (inch) |
|---|---|
| Round | Starting at 0.125″ |
| Hexagon | Starting at 0.250″ |
| Square | Starting at 0.250″ |
| Rectangle | Starting at 0.125″ x 1.00″ |
Minimum Mechanical Properties:
| Tensile (PSI) | Yield (PSI) | % Elongation 4d | Hardness HB |
|---|---|---|---|
| 80000 | 30000 | 45 | 140 |