UNS s31603 stainless steel round bar is a molybdenum-containing austenitic stainless steel intended to provide improved corrosion resistance relative to type 304/304L in moderately corrosive process environments, particularly those containing chlorides or other halides.
The addition of molybdenum in UNS s31603 provides improved resistance to pitting and corrosion in environments containing chlorides and other halides. Type 316/316L has been used in handling many chemicals used by the process industries.
Grade Specifications
| Grade | Type | AMS | ASTM | Characteristics |
|---|---|---|---|---|
S31603 | 316/316L DUAL CERTIFIED | 5648 | A276 | 316/316L Dual Certified is an extra low carbon version of 316, eliminating harmful carbide precipitation during welding. Also has superior resistance to intergranular corrosion after welding of stress relieving. |
Chemical Composition
| Grade | Min/Max | C | Mn | Si | P | S | Cr | Mo | Ni | N |
|---|---|---|---|---|---|---|---|---|---|---|
316L | Min Max | - 0.03 | - 2.0 | - 0.75 | - 0.045 | - 0.03 | 16.0 18.0 | 2.00 3.00 | 10.0 14.0 | - 0.10 |
Mechanical Properties
| Grade | Tensile Strength (MPa) Min | Yeild Strength 0.2% proof (MPa) Min | Elongation (% in 50mm) Min | Hardness (Rockwell B) max | Hardness (Brinell) max |
|---|---|---|---|---|---|
316L | 485 | 170 | 40 | 95 | 217 |