DIN / EN · Europe · 4 designations

21Mn6

21Mn6 is a material in the category Heat-resistant structural steels, held under material number 1.0485. Its recorded composition includes C ≤ 0.23%, Si ≤ 0.6%, P 0.045%, S 0.045% and Mn 1.15–1.6%. We list 3 designations recorded for this grade, in the standards UNS. Its recorded density is 7.85 g/cm³.

Material no. 1.0485
Category Heat-resistant structural steels · 62 grades
Designations 4

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If you came for one of these

The most-used names for this grade.

UNSK02700This grade’s own name · 9 grades on that route

About Heat-resistant structural steels

Heat-resistant structural steels are structural steels designed to retain useful strength and dimensional stability at elevated temperatures. They are used for load-bearing components in hot-service equipment where mechanical performance must be maintained during heating.

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

Also known as

4 designations · 2 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Withdrawndesignation no longer current — a separate column from the two above, so a name can be same grade and withdrawn at once.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

21Mn6This grade’s own name

UNSUnited States · 3

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

Chemical composition

5 elements on file · weight %

What this alloy is

Iron — the balance, never listed by a standard — 97.7 %Mn — 1.4 %Si — 0.6 %C — 0.2 %Traces & impurities · 0.1 %

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

Element	% by weight
	≤ 0.23
	≤ 0.6
	1.15–1.6
	0.045 —
	0.045 —

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	—	0.230	Max
Si	≤0,60	—	0.600	Max
P	0,045	0.045	0.045	Exact
S	0,045	0.045	0.045	Exact
Mn	1,15-1,60	1.150	1.600	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, Cr, Mo.

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 1.0, 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.

19Mn61.0473

Mn 1,00-1,70 · Si ≤0,60