316L Stainless Steel (UNS S31603)
316L stainless steel (UNS S31603) is a low-carbon, molybdenum-alloyed austenitic stainless steel. It is widely specified for welded components and industrial equipment requiring corrosion resistance. Compared with 304L, its molybdenum content improves resistance to pitting and crevice corrosion in many chloride-containing environments, although performance depends on temperature, concentration, fabrication and service conditions. JUDE Steel supplies stainless steel flat products from China; grade, dimensions, finish, quantity and availability should be confirmed for each order.
| USA | JP | DE | EUR | CN |
|---|---|---|---|---|
| ASTM | JIS | DIN | EN | GB |
| 316L | SUS316L | X2CrNiMo 18-14-3 | 1.4404 | 022Cr17Ni12Mo2 |
Chemical Composition
The typical chemical composition is shown in the table below.
| Grade | Standard | 316L Chemical Composition | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| C | Si | Mn | Cr | Ni | P | S | Mo | Others | ||
| ≤ % | ≤ % | % | % | % | ≤ % | ≤ % | ≤ % | % | ||
| 316L | ASTM A240 | 0.03 | 0.75 | 2.0 | 16.0 - 18.0 | 10.0 - 14.0 | 0.045 | 0.03 | 2.0 - 3.0 | N≤ 0.10 |
| 1.4404 | EN 10088-2 | 0.03 | 1.0 | 2.0 | 16.5 - 18.5 | 10.0 - 13.0 | 0.045 | 0.015 | 2.0 - 2.5 | N≤ 0.11 |
| SUS316L | JIS G 4304 | JIS G 4305 | 0.03 | 1.0 | 2.0 | 16.0 - 18.0 | 12.0 - 15.0 | 0.045 | 0.03 | - | - |
Mechanical Properties
The mechanical properties are given in the table below.
| Grade | Standard | 316L Mechanical Properties | ||||
|---|---|---|---|---|---|---|
| Tensile Strength | Yield Strength 0.2% | Elongation >% | Hardness | |||
| (MPa) ≥ | (MPa) ≥ | HRB ≤ | HB ≤ | |||
| 316L | ASTM A240 | 485 | 170 | 40 | 95 | 217 |
| 1.4404 | EN 10088-2 | 490 | 190 | 40 | 95 | 215 |
| SUS316L | JIS G 4304 | JIS G 4305 | 480 | 175 | 40 | 90 | 187 |
Properties & Typical Applications
316L, as the low C series of 316 steel, it has the same characteristics with 316 steel, and has excellent resistance to grain boundary corrosion. It is suitable for large size welding for products with special requirements against grain boundary corrosion.