HS9-4-3-11
HS9-4-3-11 is a material in the category High-speed steels, held under material number 1.3208. Its recorded composition includes C 1.35–1.45%, Cr 3.7–4.4%, Co 10.5–11.5%, Mo 3.4–3.8% and W 8.4–9.1%. No cross-standard equivalents are recorded for this grade yet. Its recorded density is 8.2 g/cm³.
About High-speed steels
High-speed steels are alloyed tool steels designed to retain hardness and cutting ability when tools heat up during high-speed machining. Their hot hardness and wear resistance make them suitable for cutting tools such as drills, milling cutters, taps and broaches.
This describes the material class as a whole. Always confirm the individual grade against the standard before ordering.
Chemical composition
10 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 |
|---|---|
1.35–1.45 | |
≤ 0.5 | |
≤ 0.4 | |
0.03 | |
0.03 | |
3.7–4.4 | |
3.4–3.8 | |
3.2–3.6 | |
8.4–9.1 | |
10.5–11.5 — |
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 | 1,35-1,45 | 1.350 | 1.450 | Range |
| Si | ≤0,50 | — | 0.500 | Max |
| P | 0,03 | 0.030 | 0.030 | Exact |
| S | 0,03 | 0.030 | 0.030 | Exact |
| V | 3,20-3,60 | 3.200 | 3.600 | Range |
| Cr | 3,70-4,40 | 3.700 | 4.400 | Range |
| Mn | ≤0,40 | — | 0.400 | Max |
| Co | 10,5-11,5 | 10.500 | 11.500 | Range |
| Mo | 3,40-3,80 | 3.400 | 3.800 | Range |
| W | 8,40-9,10 | 8.400 | 9.100 | 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
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 1.3, a shared category, and a published range for Co / W 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.