STD4
STD4 is a grade designated under KS. Its recorded composition includes C 0.25–0.35%, V 0.3–0.5%, Cr 2–3%, Mn ≤ 0.6% and W 5–6%. No cross-standard equivalents are recorded for this grade yet. Recorded mechanical properties include HB 235.
- Designations 1
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 |
|---|---|
0.25–0.35 | |
≤ 0.4 | |
≤ 0.6 | |
≤ 0.03 | |
≤ 0.02 | |
2–3 | |
0.3–0.5 | |
5–6 |
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 | 0.25 - 0.35 | 0.250 | 0.350 | Range |
| Si | max 0.4 | — | 0.400 | Max |
| P | max 0.03 | — | 0.030 | Max |
| S | max 0.02 | — | 0.020 | Max |
| V | 0.3 - 0.5 | 0.300 | 0.500 | Range |
| Cr | 2 - 3 | 2.000 | 3.000 | Range |
| Mn | max 0.6 | — | 0.600 | Max |
| W | 5 - 6 | 5.000 | 6.000 | 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, Mo.
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.