AISI 316 | AISI 316L
AISI 316 and AISI 316L are the international designations for the following grades:
1.4401 – X5CrNiMo17-12-2 (AISI 316)
1.4404 – X2CrNiMo17-12-2 (AISI 316L)
1.4435 – X2CrNiMo18-14-3 (AISI 316L)
The AISI 316 and AISI 316L describes stainless, austenitic chromium-nickel-molybdenum steels which have good resistance in non-oxidizing acids and chlorine-containing media. Due to the chemical composition, the material 316 and the material 316L are inherently corrosion resistant metal alloys.
AISI 316L differs from AISI 316 in its lower carbon content. The "L" stands for "low carbon" in this case.
The materials 1.4401 and 1.4404, which belong to the V4A Group, are easy to machine and weld. With the addition of 2-2.5% molybdenum, both grades show good corrosion resistance even in the presence of chlorides. The main areas of application of these AISI standards are found in the construction, chemical and pharmaceutical industries. Both the use in the low temperature range is possible, as well as the application up to 550°C.
Material grade 1.4435, also called 316L stainless steel, is described as a non-magnetic steel. The Delta ferrite content is max. 0.5%. It can be used in accordance with the Pressure Equipment guidelines 97/23 EG. The areas of application of this material are in the petroleum / petrochemical or optical industries, etc.
Chemical Composition
| 1.4401 X5CrNiMo17-12-2 | C | Si | Mn | P | S | Cr | Mo | Ni | N |
| min. | 16,5 | 2,0 | 10,0 | ||||||
| max. | 0,07 | 1,0 | 2,0 | 0,045 | 0,015 | 18,5 | 2,5 | 13,0 | 0,10 |
| 1.4404 X2CrNiMo17-12-2 | C | Si | Mn | P | S | Cr | Mo | Ni | N |
| min. | 16,5 | 2,0 | 10,0 | ||||||
| max. | 0,03 | 1,0 | 2,0 | 0,045 | 0,015 | 18,5 | 2,5 | 13,0 | 0,10 |
| 1.4435 X2CrNiMo18-14-3 | C | Si | Mn | P | S | Cr | Mo | Ni | N |
| min. | 17,0 | 2,5 | 12,5 | ||||||
| max. | 0,03 | 1,0 | 2,0 | 0,045 | 0,03 | 19,0 | 3,0 | 15,0 | 0,10 |
Your contact person Heidi Sommer+49 (0) 35263-665-33+49 (0) 35263-665-35sommer@stahlportal.com