Stainless Steel
316 · 1.4401
Also known as A4 / V4A / X5CrNiMo17-12-2
Molybdenum-bearing stainless for higher corrosion and marine resistance.
Stainless 316 (material 1.4401, X5CrNiMo17-12-2) adds molybdenum to 304 for improved resistance to chlorides, acids and marine environments. Supplied as round, flat and bright bar, sheet and tube for demanding corrosion service.
International equivalents.
The same steel by country and standard — near matches; mill certificate governs.
Chemical composition.
Indicative, % by weight per EN 10088-3. Mill certificate governs.
| Element | % |
|---|---|
| C | ≤ 0.07 |
| Si | ≤ 1.00 |
| Mn | ≤ 2.00 |
| Cr | 16.5 – 18.5 |
| Ni | 10.0 – 13.0 |
| Mo | 2.0 – 2.5 |
Mechanical properties.
Indicative values for a reference section and heat-treatment condition. Actual properties vary with dimension and treatment, and are confirmed on the mill certificate.
Available forms.
Size: Ø 3 – 250 mm · flats, plates & sheet to specification
Typical applications.
- Marine & offshore
- Chemical & pharma
- Food processing
- Coastal architecture
FAQ.
What is 316?
Stainless 316 (material 1.4401, X5CrNiMo17-12-2) adds molybdenum to 304 for improved resistance to chlorides, acids and marine environments. Supplied as round, flat and bright bar, sheet and tube for demanding corrosion service.
Is 316 the same as A4?
Yes — 316 and A4, V4A, X5CrNiMo17-12-2 are matching designations for the same steel across different standards (EN, AISI/SAE, JIS, GB, former DIN). They are near equivalents and may differ slightly in chemistry, so the mill certificate governs the exact specification.
What are the international equivalents of 316?
316 corresponds to 1.4401 (X5CrNiMo17-12-2) (EN), 316 (AISI), SUS316 (JIS), A4 (fastener). Equivalents are nearest matches by country/standard; the mill certificate governs the exact specification.
In which forms is 316 available?
316 is supplied as Round bar, Flat bar, Bright / cold-drawn bar, Sheet, Tube, in Ø 3 – 250 mm (bar diameter; flats, plates and sheet are quoted to specification).
What is 316 used for?
Typical applications include Marine & offshore, Chemical & pharma, Food processing, Coastal architecture.