--- title: "A913Gr.50 — S355M, 13 equivalent designations" description: "A913Gr.50 in DIN / EN: material number 1.8823, also listed as S355M. It is a material in the category Others. Designations recorded for this grade: 13." canonical: https://steelequivalents.com/materials/din-en/a913gr-50 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/din-en/a913gr-50.md cs: https://steelequivalents.com/cs/materiály/din-en/a913gr-50.md de: https://steelequivalents.com/de/werkstoffe/din-en/a913gr-50.md es: https://steelequivalents.com/es/materiales/din-en/a913gr-50.md fr: https://steelequivalents.com/fr/matériaux/din-en/a913gr-50.md hu: https://steelequivalents.com/hu/anyagok/din-en/a913gr-50.md it: https://steelequivalents.com/it/materiali/din-en/a913gr-50.md nl: https://steelequivalents.com/nl/materialen/din-en/a913gr-50.md pl: https://steelequivalents.com/pl/materiały/din-en/a913gr-50.md pt: https://steelequivalents.com/pt/materiais/din-en/a913gr-50.md ru: https://steelequivalents.com/ru/материалы/din-en/a913gr-50.md tr: https://steelequivalents.com/tr/malzemeler/din-en/a913gr-50.md zh: https://steelequivalents.com/zh/材料/din-en/a913gr-50.md ja: https://steelequivalents.com/ja/材料/din-en/a913gr-50.md ar: https://steelequivalents.com/ar/المواد/din-en/a913gr-50.md ko: https://steelequivalents.com/ko/재료/din-en/a913gr-50.md pt-br: https://steelequivalents.com/pt-br/materiais/din-en/a913gr-50.md hi: https://steelequivalents.com/hi/सामग्री/din-en/a913gr-50.md content_hash: sha256:756aef10f0a344ae8eea5066d598613a0d7a56df7ff73af8b5dadd8f8ffa2601 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/a913gr-50 > Canonical URL: https://steelequivalents.com/materials/din-en/a913gr-50 > 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 · 13 designations # A913Gr.50 A913Gr.50 is a designation in DIN / EN for the material held under material number 1.8823, also listed as S355M. It is a material in the category Others. We list 13 designations recorded for this grade, in the standards DIN / EN, AISI / SAE, BS, AFNOR, UNI and SS. - [*Material no.* **1.8823**](/materials/material-no/1.8823 "Material no.: 1.8823") - [*Category* **Others · 1754 grades**](/categories/others "Category: Others · 1754 grades") - *Designations* **13** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=3eb5de33-2a34-4ab4-bd6b-bdfea5e040e4&designation=f29cf65c-a3d0-4cab-bc29-9142930d7395 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/din-en/a913gr-50.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [DIN / EN S355M This grade’s own name](/materials/din-en/s355m "DIN / EN S355M") ## 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. ## Also known as 13 designations · 6 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 · 5 - **A913Gr.50 Indicative** - [FeE355KGTM Indicative](/materials/uni/fee355kgtm "DIN / EN FeE355KGTM") - [S355M This grade’s own name](/materials/din-en/s355m "DIN / EN S355M") - [StE 355 TM This grade’s own name Withdrawn](/materials/din-en/ste-355-tm "DIN / EN StE 355 TM") - [StE355 Indicative](/materials/din-en/ste355 "DIN / EN StE355") AISI / SAE United States · 2 - [A572Gr.C Indicative](/materials/aisi-sae/a572gr-c "AISI / SAE A572Gr.C") - **A913Gr.50 Indicative** BS United Kingdom · 1 - [50D Indicative](/materials/bs/50d "BS 50D") AFNOR France · 2 - [E355 Indicative](/materials/din-en/e355 "AFNOR E355") - [E355R Indicative](/materials/afnor/e355r "AFNOR E355R") UNI Italy · 2 - [FeE355KG Indicative](/materials/uni/fee355kg "UNI FeE355KG") - [FeE355KGTM Indicative](/materials/uni/fee355kgtm "UNI FeE355KGTM") SS Sweden · 1 - [2134-01 Indicative](/materials/ss/2134-01 "SS 2134-01") Every designation on file is listed — no truncation, no “+ n more”. Each one is itself a route that leads back here. ## Chemical composition 14 elements on file · weight % What this alloy is Fe Mn Cu Si Iron — the balance, never listed by a standard — 96 % Mn — 1.6 % Cu — 0.6 % Si — 0.5 % Traces & impurities · 1.3 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | ≤ 0.14 | | Si | ≤ 0.5 | | Mn | ≤ 1.6 | | P | 0.03 | | S | 0.025 | | Cr | ≤ 0.3 | | Mo | ≤ 0.1 | | Ni | 0.5 | | V | ≤ 0.1 | | Cu | ≤ 0.55 | | Al | ≥ 0.02 | | Ti | ≤ 0.05 | | Nb | ≤ 0.05 | | N | 0.015 | Carbon Silicon Manganese Phosphorus Sulfur Chromium Molybdenum Nickel Vanadium Copper Aluminium Titanium Niobium 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 | ≤0,14 | — | 0.140 | Max | | N | 0,015 | 0.015 | 0.015 | Exact | | Al | ≥0,020 | 0.020 | — | Min | | Si | ≤0,50 | — | 0.500 | Max | | P | 0,03 | 0.030 | 0.030 | Exact | | S | 0,025 | 0.025 | 0.025 | Exact | | Ti | ≤0,05 | — | 0.050 | Max | | V | ≤0,10 | — | 0.100 | Max | | Cr | ≤0,30 | — | 0.300 | Max | | Mn | ≤1,60 | — | 1.600 | Max | | Ni | 0,5 | 0.500 | 0.500 | Exact | | Cu | ≤0,55 | — | 0.550 | 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 Ae3 820 °C Predicted Ae1 711 °C Predicted Acm 386 °C Predicted Bs 551 °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 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. ## Properties by condition 1 conditions · 11 values By thickness**no delivery state stated** source `steelnumber` | Thickness mm | ReH N/mm² | Rm N/mm² | |---|---|---| | ≤ 16 | 355 | — | | 16 – 40 | 345 | — | | ≤ 40 | — | 470 – 630 | | 40 – 63 | 335 | 450 – 610 | | 63 – 80 | 325 | 440 – 600 | | 80 – 100 | 325 | 440 – 600 | | 100 – 120 | 320 | 430 – 590 | Every figure holds only for the condition on its own row. Values are never merged across conditions or across sources, never averaged, and never interpolated between two rows. An em dash means no value on file — never zero. Figures are converted to the unit in the column header; the source’s own wording is kept and shown where the two differ. ## 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. [P355M 1.8821 Mn ≤1,60 · Ni 0,5 - ΔMn 0.00 - ΔNi 0.00 - 2 designations](/materials/din-en/p355m "P355M")[P355ML1 1.8832 Mn ≤1,60 · Ni 0,5 - ΔMn 0.00 - ΔNi 0.00 - 2 designations](/materials/din-en/p355ml1 "P355ML1")[P355ML2 1.8833 Mn ≤1,60 · Ni 0,5 - ΔMn 0.00 - ΔNi 0.00 - 2 designations](/materials/din-en/p355ml2 "P355ML2")[2WGr.50/50T 1.8806 Mn ≤1,65 · Ni 0,5 - ΔMn 0.02 - ΔNi 0.00 - 9 designations](/materials/din-en/2wgr-50-50t "2WGr.50/50T")[2WGr.50/50T 1.8809 Mn ≤1,65 · Ni 0,5 - ΔMn 0.02 - ΔNi 0.00 - 9 designations](/materials/din-en/2wgr-50-50t "2WGr.50/50T")[P420M 1.8824 Mn ≤1,70 · Ni 0,5 - ΔMn 0.05 - ΔNi 0.00 - 2 designations](/materials/din-en/p420m "P420M") ## 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=3eb5de33-2a34-4ab4-bd6b-bdfea5e040e4&designation=f29cf65c-a3d0-4cab-bc29-9142930d7395 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/din-en/a913gr-50.pdf "Datasheet as PDF")