SS 316 Stainless Steel
Molybdenum-bearing "marine grade" stainless with much better resistance to chlorides, acids and pitting than 304.
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What is SS 316?
SS 316 (UNS S31600, EN 1.4401) is an austenitic stainless steel containing 16.0–18.0% chromium, 10.0–14.0% nickel and 2.00–3.00% molybdenum. Molybdenum-bearing "marine grade" stainless with much better resistance to chlorides, acids and pitting than 304. It is non-magnetic in the annealed condition, has a density of 7.98 g/cm³ and a minimum tensile strength of 515 MPa, and is used mainly for pharma and API plants, chemical process equipment and marine and coastal hardware.
- Type Austenitic (300 series)
- Equivalents UNS S31600 · EN 1.4401 · SUS 316
- Density 7.98 g/cm³
- Strength (min) 515 MPa tensile · 205 MPa yield
- Magnetic? Non-magnetic in the annealed condition
- Main uses Pharma and API plants, chemical process equipment, marine and coastal hardware
What is the chemical composition of SS 316?
Typical ASTM A240 limits, % by weight (single values are maximums).
| C | Mn | Si | P | S | Cr | Ni | Mo | N |
|---|---|---|---|---|---|---|---|---|
| 0.08 max | 2.00 max | 0.75 max | 0.045 max | 0.030 max | 16.0 – 18.0 | 10.0 – 14.0 | 2.00 – 3.00 | 0.10 max |
What are the mechanical properties of SS 316?
| Tensile strength (min) | 515 MPa |
|---|---|
| Yield strength 0.2% (min) | 205 MPa |
| Elongation (min) | 40% |
| Hardness (max) | 95 HRB / 217 HB max |
| Density | 7.98 g/cm³ |
What is the equivalent of SS 316?
| ASTM / AISI | UNS | EN / W.Nr. | DIN | JIS |
|---|---|---|---|---|
| 316 | S31600 | 1.4401 | X5CrNiMo17-12-2 | SUS 316 |
Where is SS 316 used?
- Pharma and API plants
- Chemical process equipment
- Marine and coastal hardware
- Pulp and paper equipment
- Medical and surgical equipment
- Food plants using brine or acids
Can SS 316 be welded?
Excellent. Weld with ER316L filler to keep molybdenum in the weld. For heavy welding of thick sections, 316L is the safer choice.
Forming and machining
Good formability, slightly stiffer than 304. It work-hardens when machined, like 304.
SS 316 sizes we supply
Sheets, plates, coils, round bars, pipes, tubes and flanges, usually as dual-certified 316/316L.
SS 316 price compared with 304
Typically around 40–70% more than 304 per kg, because of the higher nickel and the 2–3% molybdenum. The gap moves with nickel and molybdenum prices. For today's rate, send us your size and quantity.
Our advice
Pick 316 over 304 wherever chlorides, salt, sea air or acids are present. Pharma customers usually specify 316L for welded contact parts.
Values are typical ASTM A240 limits for flat products and are for guidance only. Always refer to the mill test certificate supplied with the material.
SS 316 — FAQs
What is the chemical composition of SS 316?
SS 316 contains up to 0.08% carbon, up to 2.00% manganese, up to 0.75% silicon, up to 0.045% phosphorus, up to 0.030% sulphur, 16.0–18.0% chromium, 10.0–14.0% nickel, 2.00–3.00% molybdenum and up to 0.10% nitrogen, with the balance iron (typical ASTM A240 limits).
What is the equivalent of SS 316?
SS 316 is UNS S31600, EN 1.4401 (X5CrNiMo17-12-2) and SUS 316 in the Japanese standard.
What is the density of SS 316?
The density of SS 316 is about 7.98 g/cm³ (7980 kg/m³).
Where can I buy SS 316 in Vadodara?
Sagar Sales Corporation supplies SS 316 sheet, plate, coil, perforated sheet, round bar, pipe, tube, angle & flat, flanges, shims, slit coil, 316ti sheet in Vadodara with mill test certificates. Contact us for today's rate.
Get today's SS 316 rate
Tell us the grade, size, finish and quantity. We check stock and send a per-kg rate with dispatch date — usually the same working day.
- Rates direct from Vadodara stock
- Mill test certificate with every lot
- Cut-to-size and delivery all over India