--- title: "WTSt 37-2 — Weathering steels" description: "WTSt 37-2: 2 equivalent designations across 1 standards, with the recorded chemical composition shown next to the source text." canonical: https://steelequivalents.com/materials/din-en/wtst-37-2 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/din-en/wtst-37-2.md cs: https://steelequivalents.com/cs/materiály/din-en/wtst-37-2.md de: https://steelequivalents.com/de/werkstoffe/din-en/wtst-37-2.md es: https://steelequivalents.com/es/materiales/din-en/wtst-37-2.md fr: https://steelequivalents.com/fr/matériaux/din-en/wtst-37-2.md hu: https://steelequivalents.com/hu/anyagok/din-en/wtst-37-2.md it: https://steelequivalents.com/it/materiali/din-en/wtst-37-2.md nl: https://steelequivalents.com/nl/materialen/din-en/wtst-37-2.md pl: https://steelequivalents.com/pl/materiały/din-en/wtst-37-2.md pt: https://steelequivalents.com/pt/materiais/din-en/wtst-37-2.md ru: https://steelequivalents.com/ru/материалы/din-en/wtst-37-2.md tr: https://steelequivalents.com/tr/malzemeler/din-en/wtst-37-2.md zh: https://steelequivalents.com/zh/材料/din-en/wtst-37-2.md ja: https://steelequivalents.com/ja/材料/din-en/wtst-37-2.md ar: https://steelequivalents.com/ar/المواد/din-en/wtst-37-2.md ko: https://steelequivalents.com/ko/재료/din-en/wtst-37-2.md pt-br: https://steelequivalents.com/pt-br/materiais/din-en/wtst-37-2.md hi: https://steelequivalents.com/hi/सामग्री/din-en/wtst-37-2.md content_hash: sha256:d1125df1dc8c2af947621f606f8d76e8756572a23f0de006bef15e160b60ea2c generated: 2026-09-24 --- > **Machine-readable Markdown rendering.** This is a Markdown representation of a web page, > served for AI agents and crawlers as a token-efficient alternative to the full HTML. > Full interactive HTML version: https://steelequivalents.com/materials/din-en/wtst-37-2 > Canonical URL: https://steelequivalents.com/materials/din-en/wtst-37-2 > Available languages: en, cs, de, es, fr, hu, it, nl, pl, pt, ru, tr, zh, ja, ar, ko, pt-br, hi > Change detection: `content_hash` is the SHA-256 of this document's Markdown body — everything > below this block, whitespace-trimmed, excluding the front-matter. Compare it to detect a real > content change; `generated` moves on every render and is not a change signal. DIN / EN · Europe · 2 designations # WTSt 37-2 S235JRW is a material in the category [Weathering steels](/categories/weathering-steels "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**](/materials/material-no/1.8960 "Material no.: 1.8960") - [*Category* **Weathering steels · 27 grades**](/categories/weathering-steels "Category: Weathering steels · 27 grades") - *Designations* **2** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=860d25e3-26c3-4e0a-8faa-98af8654134a&designation=fcf50cc6-48f9-4a16-8f70-6fd7fe3c73cf "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/din-en/wtst-37-2.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [DIN / EN S235JRW This grade’s own name](/materials/din-en/s235jrw "DIN / EN S235JRW") ## 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 name recorded in our sources as this grade’s own designation under that standard. Indicative taken from a published cross-reference table; a close match, not a guarantee of interchangeability. Verify against the mill certificate before ordering. Withdrawn designation no longer current — a separate column from the two above, so a name can be same grade and withdrawn at once. DIN / EN Europe · 2 - [S235JRW This grade’s own name](/materials/din-en/s235jrw "DIN / EN S235JRW") - **WTSt 37-2 This grade’s own name Withdrawn** 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 Fe Cr Cu Mn 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 | |---|---| | C | ≤ 0.13 | | Si | 0.1–0.4 | | Mn | 0.2–0.5 | | P | 0.05 | | S | 0.035 | | Cr | 0.5–0.8 | | Cu | 0.3–0.5 | | N | 0.009 | Carbon Silicon Manganese Phosphorus Sulfur Chromium Copper Nitrogen 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 published source 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 Density 7,85 g/cm³ Exact 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. [Fe360CKI 1.8958 Cr 0,40-0,80 · Cu 0,25-0,55 - ΔCr 0.05 - ΔCu 0.00 - 5 designations](/materials/din-en/fe360cki "Fe360CKI")[A709-50W 1.8959 Cr 0,40-0,80 · Cu 0,25-0,55 - ΔCr 0.05 - ΔCu 0.00 - 23 designations](/materials/din-en/a709-50w "A709-50W")[Fe360DKI 1.8961 Cr 0,40-0,80 · Cu 0,25-0,55 - ΔCr 0.05 - ΔCu 0.00 - 6 designations](/materials/din-en/fe360dki "Fe360DKI")[A600C 1.8963 Cr 0,40-0,80 · Cu 0,25-0,55 - ΔCr 0.05 - ΔCu 0.00 - 29 designations](/materials/din-en/a600c "A600C")[S355J2W 1.8965 Cr 0,40-0,80 · Cu 0,25-0,55 - ΔCr 0.05 - ΔCu 0.00 - 8 designations](/materials/din-en/s355j2w "S355J2W")[S355K2W(+N) 1.8966 Cr 0,40-0,80 · Cu 0,25-0,55 - ΔCr 0.05 - ΔCu 0.00 - 5 designations](/materials/din-en/s355k2w-n "S355K2W(+N)") ## Looking for this grade under another name? Search the catalogue by designation, material number or composition — every name on this page is itself a way in. [Search](/search "Steel grade search")[Inquiry](/inquiry?material=860d25e3-26c3-4e0a-8faa-98af8654134a&designation=fcf50cc6-48f9-4a16-8f70-6fd7fe3c73cf "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/din-en/wtst-37-2.pdf "Datasheet as PDF")