DIN / EN · Europe · 2 designations

WTSt 37-2

S235JRW is a material in the category Weathering steels, held under material number 1.8960. Its recorded composition includes C ≤ 0.13%, Si 0.1–0.4%, Cr 0.5–0.8%, Mn 0.2–0.5% and Cu 0.3–0.5%. We list one designation recorded for this grade, in the standard DIN / EN. Its recorded density is 7.85 g/cm³.

Material no. 1.8960
Category Weathering steels · 27 grades
Designations 2

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If you came for one of these

The most-used names for this grade.

DIN / ENS235JRWThis grade’s own name

About Weathering steels

Weathering steels are structural steels designed to develop a protective patina when exposed to the atmosphere. This characteristic helps limit further corrosion and makes them suitable for bridges, building facades, rail vehicles and other outdoor structures where reduced coating maintenance is desirable.

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Withdrawndesignation no longer current — a separate column from the two above, so a name can be same grade and withdrawn at once.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

S235JRWThis grade’s own name
WTSt 37-2This grade’s own nameWithdrawn

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 — 98.1 %Cr — 0.7 %Cu — 0.4 %Mn — 0.4 %Traces & impurities · 0.5 %

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

Element	% by weight
	≤ 0.13
	0.1–0.4
	0.2–0.5
	0.05
	0.035
	0.5–0.8
	0.3–0.5
	0.009

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	≤0,13	—	0.130	Max
N	0,009	0.009	0.009	Exact
Si	0,10-0,40	0.100	0.400	Range
P	0,05	0.050	0.050	Exact
S	0,035	0.035	0.035	Exact
Cr	0,50-0,80	0.500	0.800	Range
Mn	0,20-0,50	0.200	0.500	Range
Cu	0,30-0,50	0.300	0.500	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 / Cu 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.

Fe360CKI1.8958

Cr 0,40-0,80 · Cu 0,25-0,55