SFVQ3
SFVQ3 is a material in the category Quenched and tempered steels. Its recorded composition includes C ≤ 0.23%, Si ≤ 0.4%, Cr 1.5–2%, Ni 2.75–3.9% and Mo 0.4–0.6%. We list one designation recorded for this grade, in the standard KS. Recorded mechanical properties include Rm 620–790 N/mm², Re 490 N/mm², A 18% and Z 48%; these figures vary with the delivery condition and dimension.
- Category Quenched and tempered steels · 133 grades
- Designations 2
If you came for one of these
The most-used names for this grade.- KSSFVQ3This grade’s own name
About Quenched and tempered steels
Quenched and tempered steels are heat-treated steels designed to combine high strength with useful toughness and ductility. They are used for heavily loaded components such as shafts, gears, fasteners and structural machine parts where resistance to mechanical stress is required.
This describes the material class as a whole. Always confirm the individual grade against the standard before ordering.
Also known as
2 designations · 2 standards · nothing hidden- SFVQ3This grade’s own name
- SFVQ3This 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
9 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 | |
≤ 0.4 | |
0.2–0.4 | |
≤ 0.02 | |
≤ 0.02 | |
1.5–2 — | |
0.4–0.6 | |
2.75–3.9 | |
≤ 0.03 |
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 | max 0.23 | — | 0.230 | Max |
| Si | max 0.4 | — | 0.400 | Max |
| P | max 0.02 | — | 0.020 | Max |
| S | max 0.02 | — | 0.020 | Max |
| V | max 0.03 | — | 0.030 | Max |
| Cr | 1.5 - 2 | 1.500 | 2.000 | Range |
| Mn | 0.2 - 0.4 | 0.200 | 0.400 | Range |
| Ni | 2.75 - 3.9 | 2.750 | 3.900 | Range |
| Mo | 0.4 - 0.6 | 0.400 | 0.600 | 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.
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.