DIN / EN · Europe · 1 designation

L450QB

L450QB is a material in the category Others, held under material number 1.8952. Its recorded composition includes C ≤ 0.16%, Si ≤ 0.45%, Cr ≤ 0.3%, Mn ≤ 1.6% and Ni 0.3%. No cross-standard equivalents are recorded for this grade yet. Its recorded density is 7.85 g/cm³.

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About Others

These are miscellaneous metallic alloys that do not fit a more specific material family and may be based on iron, nickel, cobalt, copper or other alloy systems. They are selected for applications requiring particular combinations of strength, hardness, toughness, wear resistance or resistance to demanding service conditions.

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

Chemical composition

14 elements on file · weight %

What this alloy is

Iron — the balance, never listed by a standard — 96.5 %Mn — 1.6 %Si — 0.5 %Cr — 0.3 %Traces & impurities · 1.1 %

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

Element	% by weight
	≤ 0.16
	≤ 0.45
	≤ 1.6
	0.025
	0.02
	≤ 0.3
	≤ 0.1
	0.3
	≤ 0.09
	≤ 0.25
	0.015–0.06
	≤ 0.06
	≤ 0.05
	0.012

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	≤0,16	—	0.160	Max
N	0,012	0.012	0.012	Exact
Al	0,015-0,060	0.015	0.060	Range
Si	≤0,45	—	0.450	Max
P	0,025	0.025	0.025	Exact
S	0,02	0.020	0.020	Exact
Ti	≤0,06	—	0.060	Max
V	≤0,09	—	0.090	Max
Cr	≤0,30	—	0.300	Max
Mn	≤1,60	—	1.600	Max
Ni	0,3	0.300	0.300	Exact
Cu	≤0,25	—	0.250	Max
Nb	≤0,05	—	0.050	Max
Mo	≤0,10	—	0.100	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

computed from composition · °C

Predicted Ae3818°C

Predicted Ae1713°C

Predicted Acm404°C

Predicted Bs553°C

These four temperatures are a CALCULATION from this grade's own composition, using the published Li, Niebuhr, Meekisho & Atteridge (1998) model — never a measurement, and computed from the UPPER BOUND of each element's specified range, not a mid-range figure. Where this grade also has a measured transformation point (Ac1, Ac3, Ar1, Ar3) on file, it is shown separately, in Physical & mechanical properties, and is never replaced by the predicted figures here — Ae (predicted, equilibrium) and Ac/Ar (measured, on heating or cooling) are different physical quantities and can differ by tens of degrees; a mismatch between the two is not an error in either.

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 / Ni 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.

S355G41.8803

Mn ≤1,60 · Ni 0,3