ČSN · Czechia · 2 designations

14340

14340 is a designation in ČSN for the material held under material number 1.8504, also listed as 34CrAl6. It is a material in the category Nitriding steels. We list 2 designations recorded for this grade, in the standards DIN / EN and ČSN.

Material no. 1.8504
Category Nitriding steels · 11 grades
Designations 2

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About Nitriding steels

Nitriding steels are alloy steels designed for nitriding, a surface-hardening treatment that produces a hard, wear-resistant surface while retaining a tough supporting core. They are used for gears, shafts, dies and other components requiring resistance to wear, repeated loading and dimensional change in service.

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

Also known as

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Withdrawndesignation no longer current — a separate column from the two above, so a name can be same grade and withdrawn at once.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

34CrAl6This grade’s own nameWithdrawn

ČSNCzechia · 1

14340Indicative

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

Chemical composition

7 elements on file · weight %

What this alloy is

Iron — the balance, never listed by a standard — 96.3 %Cr — 1.4 %Al — 1 %Mn — 0.8 %Traces & impurities · 0.7 %

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

Element	% by weight
	0.3–0.37
	0.15–0.35
	0.6–0.9
	0.035
	0.035
	1.2–1.5
	0.8–1.1

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	0,30-0,37	0.300	0.370	Range
Al	0,80-1,10	0.800	1.100	Range
Si	0,15-0,35	0.150	0.350	Range
P	0,035	0.035	0.035	Exact
S	0,035	0.035	0.035	Exact
Cr	1,20-1,50	1.200	1.500	Range
Mn	0,60-0,90	0.600	0.900	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, 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 Cr / Al 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.

34CrAlS51.8506

Cr 1,00-1,30 · Al 0,80-1,20