DIN / EN · Europe · 2 designations

HS18-1-2-15

HS18-1-2-15 is a material in the category High-speed steels, held under material number 1.3257. Its recorded composition includes C 0.6–0.7%, V 1.4–1.7%, Cr 3.8–4.5%, Co 15–16% and W 17.5–18.5%. We list one designation recorded for this grade, in the standard DIN / EN. Its recorded density is 7.85 g/cm³.

Material no. 1.3257
Category High-speed steels · 59 grades
Designations 2

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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.

Also known as

2 designations · 1 standards · nothing hidden

This grade’s own namerecorded in our sources as this grade’s own designation under that standard.

Indicativetaken from a published cross-reference table; a close match, not a guarantee of interchangeability. Verify against the mill certificate before ordering.

Withdrawndesignation no longer current — a separate column from the two above, so a name can be same grade and withdrawn at once.

DIN / ENEurope · 2

HS18-1-2-15This grade’s own name
S18-1-2-15This grade’s own nameWithdrawn

Every designation on file is listed — no truncation, no “+ n more”. Each one is itself a route that leads back here.

Chemical composition

10 elements on file · weight %

What this alloy is

Iron — the balance, never listed by a standard — 58.5 %W — 18 %Co — 15.5 %Cr — 4.2 %Traces & impurities · 3.9 %

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

Element	% by weight
	0.6–0.7
	≤ 0.45
	≤ 0.4
	0.03
	0.03
	3.8–4.5
	0.5–1
	1.4–1.7
	17.5–18.5
	15–16 —

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	0,60-0,70	0.600	0.700	Range
Si	≤0,45	—	0.450	Max
P	0,03	0.030	0.030	Exact
S	0,03	0.030	0.030	Exact
V	1,40-1,70	1.400	1.700	Range
Cr	3,80-4,50	3.800	4.500	Range
Mn	≤0,40	—	0.400	Max
Co	15,0-16,0	15.000	16.000	Range
Mo	0,50-1,00	0.500	1.000	Range
W	17,5-18,5	17.500	18.500	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.

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.

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