316L
Type 316 stainless steel 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 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 Stainless Steel is an extra-low carbon version of Type 316 that minimizes harmful carbide precipitation in the heat affected zone during welding.
| 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.