1.4404
1.4404 (AISI 316L) is a molybdenum-alloyed, low-carbon stainless steel with increased resistance to chlorides and aggressive media – standard in chemical and marine engineering.
Application & properties
1.4404 (AISI 316L) is a molybdenum-alloyed, low-carbon stainless steel with increased resistance to chlorides and aggressive media – standard in chemical and marine engineering.
- Chemical and process plants
- Piping for chloride-bearing/aggressive media
- Food, pharma and marine engineering
Chemical composition
Typical values in wt.-% per EN standard (heat analysis).
| Element | Content (%) |
|---|---|
| C | ≤ 0.030 |
| Si | ≤ 1.00 |
| Mn | ≤ 2.00 |
| Cr | 16.5–18.5 |
| Ni | 10.0–13.0 |
| Mo | 2.00–2.50 |
| N | ≤ 0.11 |
Mechanical properties
Typical values at room temperature per EN standard.
| Property | Value |
|---|---|
| Yield strength Rp0.2 | ≥ 200–220 MPa |
| Tensile strength Rm | 500–700 MPa |
| Elongation A | ≥ 40 % |
Standards, equivalents & product forms
| Topic | Detail |
|---|---|
| Standards | EN 10216-5, EN 10088 |
| ASME/ASTM equivalent | ~ AISI 316L |
| Material no. | 1.4404 |
| Short name / aka | X2CrNiMo17-12-2 · AISI 316L · V4A |
We supply 1.4404 as pipes, flanges and fittings – seamless or welded, on request with an EN 10204 3.1 / 3.2 mill certificate.
Frequently asked questions about 1.4404
What does the L in 316L / 1.4404 stand for?
L (low carbon) means low carbon content (≤ 0.03 %) – improving resistance to intergranular corrosion after welding.
When to use 1.4404 instead of 1.4301?
Whenever chlorides or more aggressive media are involved – the molybdenum in 1.4404 markedly increases pitting resistance.
Request 1.4404?
Grade, standard, size, pressure rating and quantity are enough – on request with an EN 10204 3.1 / 3.2 mill certificate. Your quote usually the same day.
All data are typical values per the relevant EN standards for first orientation – without warranty. The applicable standard and the mill certificate of the delivery are decisive.