316
Stainless Steel - Austenitic. Values below are the requirements of the standard named beside them; the mill certificate governs the material delivered.
Designations
- UNS
- S31600
- EN number
- 1.4401
- EN name
- X5CrNiMo17-12-2
- AISI
- 316
Density
- Density
- 8000 kg/m³
- Per
- Outokumpu / stainless technical resources
- Corrosion resistance
- Very good
- Product forms
- Sheet, plate, pipe, tube, bar
Chemical composition
| Standard | Product form | Basis | C | Si | Mn | P | S | Cr | Ni | Mo | N |
|---|---|---|---|---|---|---|---|---|---|---|---|
| ASTM A240 | Plate/Sheet/Strip | Specification | ≤ 0.08 | ≤ 0.75 | ≤ 2 | ≤ 0.045 | ≤ 0.03 | 16–18 | 10–14 | 2–3 | ≤ 0.1 |
mass %. A blank cell means the standard sets no requirement for that element, not zero. Single values are limits: "≤" a maximum, "≥" a minimum.
Reference values from the cited standards. They describe what the standard requires, not a specific heat of material; the mill test certificate governs what is delivered.
Mechanical properties
| Standard | Product form | Condition / temper | Thickness | Test temperature | Yield | Tensile | Elongation min | Hardness max | Notes |
|---|---|---|---|---|---|---|---|---|---|
| ASTM A240 | Plate/Sheet/Strip | Annealed | – | 20 °C | 0.2% offset ≥ 205 MPa | ≥ 515 MPa | 40 % (2 in / 50 mm gauge basis (product dependent)) | 95 HRB | Minimum values. |
| EN 10088-2 | Flat products | Solution annealed | ≤ 75 mm | 20 °C | Rp0.2 ≥ 220 MPa | 520–670 MPa | 40 % (A (thickness/product dependent)) | – | Representative EN flat-product range. |
Each row is one standard, one product form and one condition — the values do not transfer across rows. A blank cell means the standard sets no requirement.
Reference values from the cited standards. They describe what the standard requires, not a specific heat of material; the mill test certificate governs what is delivered.
Typical applications
Marine, chemical, food, architectural
Approximate equivalents
Approximate equivalents: equivalents are a technical reference, not a substitution instruction, verify against project specification.
| Grade | Systems | Relationship | Note | Key difference |
|---|---|---|---|---|
| 316 | ASTM/AISI/UNS → EN | Same grade, another designation | Commonly cross-referenced designation. | Mechanical/chemistry limits vary by standard/product. Compared designation: 1.4401 / X5CrNiMo17-12-2. |
Common questions
- 01What is the density of 316?
- 8000 kg/m³ — the figure the weight calculators on this site use for 316. The value is Outokumpu / stainless technical resources’s.
- 02What is the chemical composition of 316?
- C ≤ 0.08, Si ≤ 0.75, Mn ≤ 2, P ≤ 0.045, S ≤ 0.03, Cr 16–18, Ni 10–14, Mo 2–3, N ≤ 0.1, in mass %, to ASTM A240. An element the standard sets no requirement for is left blank here rather than written as zero.
- 03What are the mechanical properties of 316?
- Tensile ≥ 515 MPa, Yield ≥ 205 MPa, Elongation min ≥ 40 % — ASTM A240, Plate/Sheet/Strip, Annealed. Those are the standard’s requirements; the mill test certificate governs the metal delivered.
- 04What is 316 used for?
- Marine, chemical, food, architectural