45CrMoV6-7
45CrMoV6-7 is a material in the category Spring steels, held under material number 1.7737. Its recorded composition includes C 0.4–0.5%, Si 0.15–0.35%, Cr 1.3–1.5%, Mn 0.6–0.8% and Mo 0.65–0.75%. No cross-standard equivalents are recorded for this grade yet. Its recorded density is 7.85 g/cm³.
- Material no. 1.7737
- Category Spring steels · 52 grades
- Designations 1
About Spring steels
Spring steels are alloy steels designed to store and release elastic energy repeatedly without permanent deformation. They are characterised by a combination of strength, hardness and resilience, making them suitable for springs, clips, washers and other components subjected to repeated flexing or shock.
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 |
|---|---|
0.4–0.5 | |
0.15–0.35 | |
0.6–0.8 | |
0.035 | |
0.035 | |
1.3–1.5 — | |
0.65–0.75 | |
0.25–0.35 |
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 | 0,40-0,50 | 0.400 | 0.500 | Range |
| Si | 0,15-0,35 | 0.150 | 0.350 | Range |
| P | 0,035 | 0.035 | 0.035 | Exact |
| S | 0,035 | 0.035 | 0.035 | Exact |
| V | 0,25-0,35 | 0.250 | 0.350 | Range |
| Cr | 1,30-1,50 | 1.300 | 1.500 | Range |
| Mn | 0,60-0,80 | 0.600 | 0.800 | Range |
| Mo | 0,65-0,75 | 0.650 | 0.750 | 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.
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