DIN / EN · Europe · 1 designation

HS2-5-1-3

HS2-5-1-3 is a material in the category High-speed steels, held under material number 1.3241. Its recorded composition includes C 0.87–0.95%, Cr 3.5–4.5%, Co 2.3–2.7%, Mo 4.5–5.2% and W 1.4–2%. No cross-standard equivalents are recorded for this grade yet. Its recorded density is 7.85 g/cm³.

Material no. 1.3241
Category High-speed steels · 59 grades
Designations 1

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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

Iron — the balance, never listed by a standard — 83.9 %Mo — 4.9 %Cr — 4 %Co — 2.5 %Traces & impurities · 4.7 %

Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade.

Element	% by weight
	0.87–0.95
	0.3–0.6
	0.2–0.4
	0.03
	0.03
	3.5–4.5
	4.5–5.2
	1.1–1.5
	1.4–2
	2.3–2.7

0.01 %0.1 %1 %10 %100 %

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	0,87-0,95	0.870	0.950	Range
Si	0,30-0,60	0.300	0.600	Range
P	0,03	0.030	0.030	Exact
S	0,03	0.030	0.030	Exact
V	1,10-1,50	1.100	1.500	Range
Cr	3,50-4,50	3.500	4.500	Range
Mn	0,20-0,40	0.200	0.400	Range
Co	2,30-2,70	2.300	2.700	Range
Mo	4,50-5,20	4.500	5.200	Range
W	1,40-2,00	1.400	2.000	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.

Physical & mechanical properties

Density7,85g/cm³Exact

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 Mo / Cr 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.

1.32431.3243

Mo 4,70-5,20 · Cr 3,80-4,50