Austenitic stainless
1.4401 TP 316 X5CrNiMo17-12-2
Molybdenum-bearing austenitic with markedly better resistance to chlorides and non-oxidising acids than 304.
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Per our product catalogue- Ex stockSeamless tubes1.4401/1.4404 · 316/316L
- 117 sizes
- OD 6.00–219.10 mm
- Wall 1.00–23.01 mm
- Ex stockHydraulic & instrumentation1.4401/1.4404 · 316/316L
- 36 sizes
- OD 6.00–42.00 mm
- Wall 1.00–4.00 mm
- On requestHollow bars1.4401/1.4404 · 316 / 316L
- 144 sizes
- OD 32.00–250.00 mm
- ID 16.00–234.00 mm
Chemical composition
mass %| Element | Content |
|---|---|
| CCarbon | ≤0.07 |
| SiSilicon | ≤1 |
| MnManganese | ≤2 |
| PPhosphorus | ≤0.04 |
| SSulphur | ≤0.015 |
| NNitrogen | ≤0.11 |
| CrChromium | 16.5–18.5 |
| MoMolybdenum | 2–2.5 |
| NiNickel | 10–13 |
Mechanical properties
room temperature- Rp0.2 min (N/mm²)
- 205
- Rp1.0 min (N/mm²)
- 240
- Rm (N/mm²)
- 510–710
- Elongation A% (longitudinal)
- 40
- Elongation A% (transverse)
- 30
- Impact energy KV J (longitudinal)
- 100
- Impact energy KV J (transverse)
- 60
Seamless tube.
Standard equivalences
- DIN/EN
- X5CrNiMo17-12-2
- AISI
- 316
- UNS
- S31600
- SS
- 2347
- AFNOR
- Z7 CND 17.12.02
- BS
- 316 S31
Typical applications
- Offshore technology
- Chemical-tanker tanks and piping
- Production, storage and land transport of chemicals, food and beverages
Frequently asked questions
What is 1.4401 (TP 316)?
1.4401 (X5CrNiMo17-12-2) — Austenitic stainless. Molybdenum-bearing austenitic with markedly better resistance to chlorides and non-oxidising acids than 304.
Which grades are equivalent to 1.4401?
1.4401 corresponds to EN X5CrNiMo17-12-2; equivalent designations: AISI 316, UNS S31600, SS 2347, AFNOR Z7 CND 17.12.02, BS 316 S31.
Is 1.4401 available from stock?
Yes, ex stock: Seamless tubes in 1.4401/1.4404 (117 sizes, OD 6.00–219.10 mm); Hydraulic & instrumentation in 1.4401/1.4404 (36 sizes, OD 6.00–42.00 mm). On request: Hollow bars in 1.4401/1.4404 (144 sizes, OD 32.00–250.00 mm).
Related grades
Indicative values — verify against the applicable standard before specifying.
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