ML20CrMo
ML20CrMo is a designation in GB for the grade also listed as 4120. We list 4 designations recorded for this grade, in the standards ASTM, ISO, JIS and GB.
- Designations 4
Also known as
4 designations · 4 standards · nothing hidden- ML20CrMoThis 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
7 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 |
|---|---|
0.18–0.23 | |
0.1–0.3 | |
0.6–0.9 | |
≤ 0.025 | |
≤ 0.025 | |
0.9–1.2 | |
0.15–0.3 |
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 | 0.18-0.23 | 0.180 | 0.230 | Range |
| Si | 0.1-0.3 | 0.100 | 0.300 | Range |
| P | ≤0.025 | — | 0.025 | Max |
| S | ≤0.025 | — | 0.025 | Max |
| Cr | 0.9-1.2 | 0.900 | 1.200 | Range |
| Mn | 0.6-0.9 | 0.600 | 0.900 | Range |
| Mo | 0.15-0.3 | 0.150 | 0.300 | 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: Ni.
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.