70 MoMn 10 4
70 MoMn 10 4 is a material in the category Heat-resistant structural steels, held under material number 1.5437. Its recorded composition includes C 0.63–0.77%, Si 0.2–0.35%, Cr ≤ 0.28%, Mn 0.7–1.05% and Mo 0.8–1.1%. No cross-standard equivalents are recorded for this grade yet. Its recorded density is 7.85 g/cm³.
About Heat-resistant structural steels
Heat-resistant structural steels are structural steels designed to retain useful strength and dimensional stability at elevated temperatures. They are used for load-bearing components in hot-service equipment where mechanical performance must be maintained during heating.
This describes the material class as a whole. Always confirm the individual grade against the standard before ordering.
Chemical composition
11 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 |
|---|---|
0.63–0.77 — | |
0.2–0.35 | |
0.7–1.05 | |
0.04 | |
0.04 | |
≤ 0.28 | |
0.8–1.1 | |
0.2 | |
≤ 0.06 | |
≤ 0.2 | |
≥ 0.02 |
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 | 0,63-0,77 | 0.630 | 0.770 | Range |
| Al | ≥0,020 | 0.020 | — | Min |
| Si | 0,20-0,35 | 0.200 | 0.350 | Range |
| P | 0,04 | 0.040 | 0.040 | Exact |
| S | 0,04 | 0.040 | 0.040 | Exact |
| V | ≤0,06 | — | 0.060 | Max |
| Cr | ≤0,28 | — | 0.280 | Max |
| Mn | 0,70-1,05 | 0.700 | 1.050 | Range |
| Ni | 0,2 | 0.200 | 0.200 | Exact |
| Cu | ≤0,20 | — | 0.200 | Max |
| Mo | 0,80-1,10 | 0.800 | 1.100 | 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
This grade's composition falls outside the published model's validated range (a low-alloy composition window), so no transformation temperature is predicted here.
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 1.5, a shared category, and a published range for Mo / Mn 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.
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.