DIN / EN · Europe · 5 designations

C76D2

C76D2 is a material in the category Spring steels, held under material number 1.1253. Its recorded composition includes C 0.74–0.78%, Si 0.1–0.3%, Cr ≤ 0.1%, Mn 0.5–0.7% and Cu ≤ 0.15%. We list 4 designations recorded for this grade, in the standards UNS and AISI / SAE. Its recorded density is 7.85 g/cm³.

Material no. 1.1253
Category Spring steels · 52 grades
Designations 5

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If you came for one of these

The most-used names for this grade.

About Spring steels

Spring steels are alloy steels designed to store and release elastic energy repeatedly without permanent deformation. They are characterised by a combination of strength, hardness and resilience, making them suitable for springs, clips, washers and other components subjected to repeated flexing or shock.

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

Also known as

5 designations · 3 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Withdrawndesignation no longer current — a separate column from the two above, so a name can be same grade and withdrawn at once.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

C76D2This grade’s own name

UNSUnited States · 2

AISI / SAEUnited States · 2

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

Chemical composition

11 elements on file · weight %

What this alloy is

Iron — the balance, never listed by a standard — 98 %C — 0.8 %Mn — 0.6 %Si — 0.2 %Traces & impurities · 0.4 %

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

Element	% by weight
	0.74–0.78
	0.1–0.3
	0.5–0.7
	0.02
	0.025
	≤ 0.1
	≤ 0.03
	≤ 0.1
	≤ 0.15
	≤ 0.01
	0.007

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	0,74-0,78	0.740	0.780	Range
N	0,007	0.007	0.007	Exact
Al	≤0,01	—	0.010	Max
Si	0,10-0,30	0.100	0.300	Range
P	0,02	0.020	0.020	Exact
S	0,025	0.025	0.025	Exact
Cr	≤0,10	—	0.100	Max
Mn	0,50-0,70	0.500	0.700	Range
Ni	≤0,10	—	0.100	Max
Cu	≤0,15	—	0.150	Max
Mo	≤0,03	—	0.030	Max

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

This grade's composition falls outside the published model's validated range (a low-alloy composition window), so no transformation temperature is predicted here.

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 1.1, a shared category, and a published range for Mn / Si 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.

C78D21.1252

Mn 0,50-0,70 · Si 0,10-0,30