DIN / EN · Europe · 2 designations

D 9

D 9 is a designation in DIN / EN for the material held under material number 1.0010, also listed as C8D. It is a material in the category Unalloyed structural steels. We list 2 designations recorded for this grade, in the standards DIN / EN.

Material no. 1.0010
Category Unalloyed structural steels · 452 grades
Designations 2

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If you came for one of these

The most-used names for this grade.

DIN / ENC8DThis grade’s own name

About Unalloyed structural steels

Unalloyed structural steels include all low-carbon steels in which the iron companions do not exceed specified minimum values. The yield strength, formability and weldability are the decisive factors for their use. They are soft, pliable, tough and stretchy, but cannot be hardened by heat treatment.

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Withdrawndesignation no longer current — a separate column from the two above, so a name can be same grade and withdrawn at once.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

C8DThis grade’s own name
D 9This 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

5 elements on file · weight %

What this alloy is

Iron — the balance, never listed by a standard — 99 %Mn — 0.5 %Si — 0.3 %C — 0.1 %Traces & impurities · 0.1 %

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

Element	% by weight
	≤ 0.1
	≤ 0.3
	≤ 0.5
	0.07
	0.06 —

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	≤0,10	—	0.100	Max
Si	≤0,30	—	0.300	Max
P	0,07	0.070	0.070	Exact
S	0,06	0.060	0.060	Exact
Mn	≤0,50	—	0.500	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

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.

S215GSiT1.0211

Mn ≤0,55 · Si ≤0,30