201L
201L is a designation in AISI / SAE for the material held under material number 1.4371, also listed as X2CrMnNiN17-7-5. It is a material in the category Stainless steels. We list 5 designations recorded for this grade, in the standards DIN / EN, UNS and AISI / SAE.
If you came for one of these
The most-used names for this grade.About Stainless steels
Stainless steels are corrosion-resistant alloy steels whose chromium content promotes a protective passive surface film. They are used for equipment, structures and components exposed to moisture, chemicals or hygienic service, with different alloy compositions selected for corrosion resistance, strength, formability or weldability.
This describes the material class as a whole. Always confirm the individual grade against the standard before ordering.
Also known as
5 designations · 3 standards · nothing hidden- 201LThis grade’s own name
- T201 LNThis grade’s own name
Every designation on file is listed — no truncation, no “+ n more”. Each one is itself a route that leads back here.
Chemical composition
8 elements on file · weight %What this alloy is
Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade.
| Element | % by weight |
|---|---|
≤ 0.03 | |
≤ 1 | |
6–8 — | |
0.045 | |
0.015 | |
16–17 | |
3.5–5.5 | |
0.15–0.2 |
The scale is logarithmic, not the element’s raw share of the alloy — the only honest way to fit 0.01 % and 100 % in one picture, and it means every value here can be compared with every other.
| Element | As publishedsource text, verbatim | Min% by weight | Max% by weight | Bound |
|---|---|---|---|---|
| C | ≤0,03 | — | 0.030 | Max |
| N | 0,15-0,20 | 0.150 | 0.200 | Range |
| Si | ≤1,00 | — | 1.000 | Max |
| P | 0,045 | 0.045 | 0.045 | Exact |
| S | 0,015 | 0.015 | 0.015 | Exact |
| Cr | 16,0-17,0 | 16.000 | 17.000 | Range |
| Mn | 6,00-8,00 | 6.000 | 8.000 | Range |
| Ni | 3,50-5,50 | 3.500 | 5.500 | Range |
The published column is the source string byte-for-byte, decimal comma and all; Min and Max are the parsed bounds. Elements not listed have no value on file — they are omitted, never inferred.
Predicted transformation temperatures
Not enough recorded composition to predict a transformation temperature for this grade — missing: Mo.
Physical & mechanical properties
An absent property means we hold no value for it — it is left out rather than estimated, interpolated from a neighbouring grade, or filled from a handbook. It does not mean the property is undefined for the material.
Looking for this grade under another name?
Search the catalogue by designation, material number or composition — every name on this page is itself a way in.