DIN / EN · Europe · 5 designations

25MoCr4

25MoCr4 is a material in the category Case hardening steels, held under material number 1.7325. Its recorded composition includes C 0.23–0.29%, Si 0.15–0.4%, Cr 0.4–0.6%, Mn 0.6–0.9% and Mo 0.4–0.5%. We list 4 designations recorded for this grade, in the standards UNS, AISI / SAE and SRPS. Its recorded density is 7.85 g/cm³.

Material no. 1.7325
Category Case hardening steels · 60 grades
Designations 5

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If you came for one of these

The most-used names for this grade.

About Case hardening steels

Case hardening steels are steels designed to develop a hard, wear-resistant surface while retaining a tough and ductile core. They are used for components such as gears, shafts and other machine parts exposed to contact wear and cyclic loading.

This describes the material class as a whole. Always confirm the individual grade against the standard before ordering.

Also known as

5 designations · 4 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Withdrawndesignation no longer current — a separate column from the two above, so a name can be same grade and withdrawn at once.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 · 1

25MoCr4This grade’s own name

UNSUnited States · 1

G86520This grade’s own name

AISI / SAEUnited States · 2

SRPSSerbia · 1

Č.7421Indicative

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

Chemical composition

8 elements on file · weight %

What this alloy is

Iron — the balance, never listed by a standard — 97.7 %Mn — 0.8 %Cr — 0.5 %Mo — 0.5 %Traces & impurities · 0.6 %

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

Element	% by weight
	0.23–0.29 —
	0.15–0.4
	0.6–0.9
	0.035
	0.035
	0.4–0.6
	0.4–0.5
	≥ 0.02

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	0,23-0,29	0.230	0.290	Range
Al	(≥0,02)	0.020	—	Min
Si	0,15-0,40	0.150	0.400	Range
P	0,035	0.035	0.035	Exact
S	0,035	0.035	0.035	Exact
Cr	0,40-0,60	0.400	0.600	Range
Mn	0,60-0,90	0.600	0.900	Range
Mo	0,40-0,50	0.400	0.500	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.

Similar grades — and why

Selection rule, stated so you can disagree with it: same number class 1.7, a shared category, and a published range for Mn / 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.

25MoCrS41.7326

Mn 0,60-0,90 · Cr 0,40-0,60