Material number · Europe · 1 designation

1.8720

1.8720 is the material number of the grade also listed as 18MnCr5-3. It is a material in the category High-strength steels. We list 1 designations recorded for this grade, in the standards DIN / EN.

Material no. 1.8720
Category High-strength steels · 128 grades
Designations 1

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If you came for one of these

The most-used names for this grade.

DIN / EN18MnCr5-3This grade’s own name

About High-strength steels

High-strength steels are steels designed to carry high loads while resisting deformation. They are used for load-bearing structures, vehicles and machinery where strength, durability and reduced material weight are important.

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

Also known as

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Withdrawndesignation no longer current — a separate column from the two above, so a name can be same grade and withdrawn at once.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

18MnCr5-3This grade’s own name

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 — 96.8 %Mn — 1.2 %Cr — 0.8 %Ni — 0.7 %Traces & impurities · 0.6 %

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

Element	% by weight
	0.09–0.22
	0.2–0.6
	0.6–1.7
	0.025
	0.025
	0.5–1
	0.7
	≤ 0.005

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
B	≤0,005	—	0.005	Max
C	0,09-0,22	0.090	0.220	Range
Si	0,20-0,60	0.200	0.600	Range
P	0,025	0.025	0.025	Exact
S	0,025	0.025	0.025	Exact
Cr	0,50-1,00	0.500	1.000	Range
Mn	0,60-1,70	0.600	1.700	Range
Ni	0,7	0.700	0.700	Exact

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: 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 1.8, 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.

16MnCr5-31.8712

Mn 0,60-1,70 · Cr 0,50-1,00