20MnCr6-4
20MnCr6-4 is a material in the category High-strength steels, held under material number 1.8703. Its recorded composition includes C ≤ 0.23%, Si 0.3–0.7%, Cr 0.8–1.3%, Mn 1.2–2% and Mo ≤ 0.3%. No cross-standard equivalents are recorded for this grade yet. Its recorded density is 7.85 g/cm³.
About High-strength steels
High-strength steels are steels designed to carry high loads while resisting deformation. They are used for load-bearing structures, vehicles and machinery where strength, durability and reduced material weight are important.
This describes the material class as a whole. Always confirm the individual grade against the standard before ordering.
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 |
|---|---|
≤ 0.23 | |
0.3–0.7 | |
1.2–2 | |
0.025 | |
0.025 | |
0.8–1.3 | |
≤ 0.3 | |
≤ 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 | ≤0,23 | — | 0.230 | Max |
| Si | 0,30-0,70 | 0.300 | 0.700 | Range |
| P | 0,025 | 0.025 | 0.025 | Exact |
| S | 0,025 | 0.025 | 0.025 | Exact |
| V | ≤0,20 | — | 0.200 | Max |
| Cr | 0,80-1,30 | 0.800 | 1.300 | Range |
| Mn | 1,20-2,00 | 1.200 | 2.000 | Range |
| Mo | ≤0,30 | — | 0.300 | Max |
- (Nb+V+Ti)≤0,20
- (Nb+V+Ti)≤0,20
- (Nb+V+Ti)≤0,20
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.
Similar grades — and why
Selection rule, stated so you can disagree with it: same number class 1.8, a shared category, and a published range for Mn / Cr that overlaps this grade’s. These are neighbours in composition space — they are not equivalents, and none is claimed to be interchangeable with this grade.
Mn 1,20-1,80 · Cr 0,40-1,00
- ΔMn 0.10
- ΔCr 0.35
- 1 designations
Mn 1,20-1,50 · Cr 0,50-0,90
- ΔMn 0.25
- ΔCr 0.35
- 1 designations
Mn 0,95-1,30 · Cr 1,00-1,50
- ΔMn 0.48
- ΔCr 0.20
- 1 designations
Mn ≤1,90 · Cr 0,60-1,40
- ΔMn 0.65
- ΔCr 0.05
- 1 designations
Mn ≤2,00 · Cr 0,80-1,60
- ΔMn 0.60
- ΔCr 0.15
- 1 designations
Mn 0,60-1,70 · Cr 0,50-1,00
- ΔMn 0.45
- ΔCr 0.30
- 1 designations
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.