--- title: "AE390HC — Fine-grain steels for cold forming" description: "AE390HC in UNE: material number 1.0976, also listed as QStE 360 TM. It is a material in the category Fine-grain steels for cold forming." canonical: https://steelequivalents.com/materials/une/ae390hc language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/une/ae390hc.md cs: https://steelequivalents.com/cs/materiály/une/ae390hc.md de: https://steelequivalents.com/de/werkstoffe/une/ae390hc.md es: https://steelequivalents.com/es/materiales/une/ae390hc.md fr: https://steelequivalents.com/fr/matériaux/une/ae390hc.md hu: https://steelequivalents.com/hu/anyagok/une/ae390hc.md it: https://steelequivalents.com/it/materiali/une/ae390hc.md nl: https://steelequivalents.com/nl/materialen/une/ae390hc.md pl: https://steelequivalents.com/pl/materiały/une/ae390hc.md pt: https://steelequivalents.com/pt/materiais/une/ae390hc.md ru: https://steelequivalents.com/ru/материалы/une/ae390hc.md tr: https://steelequivalents.com/tr/malzemeler/une/ae390hc.md zh: https://steelequivalents.com/zh/材料/une/ae390hc.md ja: https://steelequivalents.com/ja/材料/une/ae390hc.md ar: https://steelequivalents.com/ar/المواد/une/ae390hc.md ko: https://steelequivalents.com/ko/재료/une/ae390hc.md pt-br: https://steelequivalents.com/pt-br/materiais/une/ae390hc.md hi: https://steelequivalents.com/hi/सामग्री/une/ae390hc.md content_hash: sha256:2aa690f34b31ef51033ece97861f37a9e7feda141652dab5ef6ff98c93e7e042 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/une/ae390hc > Canonical URL: https://steelequivalents.com/materials/une/ae390hc > 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. UNE · Spain · 15 designations # AE390HC AE390HC is a designation in UNE for the material held under material number 1.0976, also listed as QStE 360 TM. It is a material in the category Fine-grain steels for cold forming. We list 15 designations recorded for this grade, in the standards DIN / EN, AISI / SAE, ASTM, BS, AFNOR, UNE, ISO, JIS, UNI and SS. - [*Material no.* **1.0976**](/materials/material-no/1.0976 "Material no.: 1.0976") - [*Category* **Fine-grain steels for cold forming · 27 grades**](/categories/fine-grain-steels-for-cold-forming "Category: Fine-grain steels for cold forming · 27 grades") - *Designations* **15** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=79771a74-6b21-4345-8a79-e4359f083d55&designation=278becb5-0d24-4e80-ac29-788e55d306a4 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/une/ae390hc.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [DIN / EN S355MC This grade’s own name](/materials/din-en/s355mc "DIN / EN S355MC") - [ASTM A1008 This grade’s own name · 7 grades on that route](/materials/astm/a1008 "ASTM A1008") ## About Fine-grain steels for cold forming Fine-grain steels for cold forming are steels with a refined grain structure, combining strength with the ductility needed for deformation at low temperatures. They are used for formed components where reliable shaping and consistent mechanical performance are required. This describes the material class as a whole. Always confirm the individual grade against the standard before ordering. ## Also known as 15 designations · 10 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 - [QStE 360 TM This grade’s own name Withdrawn](/materials/din-en/qste-360-tm "DIN / EN QStE 360 TM") - [S355MC This grade’s own name](/materials/din-en/s355mc "DIN / EN S355MC") AISI / SAE United States · 1 - [Gr.50 Indicative](/materials/aisi-sae/gr-50 "AISI / SAE Gr.50") ASTM United States · 3 - [A1008 This grade’s own name](/materials/astm/a1008 "ASTM A1008") - [A1011 Grade 50 Class 1 This grade’s own name](/materials/astm/a1011-grade-50-class-1 "ASTM A1011 Grade 50 Class 1") - [A1011 Grade 50 Class 2 This grade’s own name](/materials/astm/a1011-grade-50-class-2 "ASTM A1011 Grade 50 Class 2") BS United Kingdom · 2 - [46F35 Indicative](/materials/bs/46f35 "BS 46F35") - [46F40 Indicative](/materials/bs/46f40 "BS 46F40") AFNOR France · 2 - [E355D Indicative](/materials/afnor/e355d "AFNOR E355D") - [E390D Indicative](/materials/afnor/e390d "AFNOR E390D") UNE Spain · 1 - **AE390HC Indicative** ISO International · 1 - [FeE355 Indicative](/materials/iso/fee355 "ISO FeE355") JIS Japan · 1 - [SPFH540 Indicative](/materials/jis/spfh540 "JIS SPFH540") UNI Italy · 1 - [FeE355TM Indicative](/materials/uni/fee355tm "UNI FeE355TM") SS Sweden · 1 - [2642 Indicative](/materials/ss/2642 "SS 2642") Every designation on file is listed — no truncation, no “+ n more”. Each one is itself a route that leads back here. ## Chemical composition 9 elements on file · weight % What this alloy is Fe Mn Si V Iron — the balance, never listed by a standard — 97.4 % Mn — 1.5 % Si — 0.5 % V — 0.2 % Traces & impurities · 0.4 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | ≤ 0.12 | | Si | ≤ 0.5 | | Mn | ≤ 1.5 | | P | 0.025 | | S | 0.02 | | V | ≤ 0.2 | | Al | ≥ 0.015 | | Ti | ≤ 0.15 | | Nb | ≤ 0.09 | Carbon Silicon Manganese Phosphorus Sulfur Vanadium Aluminium Titanium Niobium 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 | ≤0,12 | — | 0.120 | Max | | Al | ≥0,015 | 0.015 | — | Min | | Si | ≤0,50 | — | 0.500 | Max | | P | 0,025 | 0.025 | 0.025 | Exact | | S | 0,02 | 0.020 | 0.020 | Exact | | Ti | ≤0,15 | — | 0.150 | Max | | V | ≤0,20 | — | 0.200 | Max | | Mn | ≤1,50 | — | 1.500 | Max | | Nb | ≤0,09 | — | 0.090 | 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 Not enough recorded composition to predict a transformation temperature for this grade — missing: Ni, Cr, 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. ## Properties by condition 2 conditions · 5 values By thickness**no delivery state stated** source `steelnumber` | Thickness mm | A80% · Lo = 80 mm | A% · Lo = 5,65 √So | |---|---|---| | ≤ 3 | 19 | — | | ≥ 3 | — | 23 | By delivery state**no delivery state stated** source `steeljis` | Delivery state | Rm N/mm² | Re N/mm² | A% | |---|---|---|---| | Plate/Sheet Hot-rolled | 540 | 355 | 21 – 24 | 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 1.0, a shared category, and a published range for Mn / Si 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. [S340NC 1.0975 Mn ≤1,50 · Si ≤0,50 - ΔMn 0.00 - ΔSi 0.00 - 2 designations](/materials/din-en/s340nc "S340NC")[S380MC 1.0978 Mn ≤1,50 · Si ≤0,50 - ΔMn 0.00 - ΔSi 0.00 - 2 designations](/materials/din-en/s380mc "S380MC")[S315NC 1.0973 Mn ≤1,40 · Si ≤0,50 - ΔMn 0.05 - ΔSi 0.00 - 3 designations](/materials/din-en/s315nc "S315NC")[FeE355-TD 1.0977 Mn ≤1,60 · Si ≤0,50 - ΔMn 0.05 - ΔSi 0.00 - 4 designations](/materials/din-en/fee355-td "FeE355-TD")[S380NC 1.0979 Mn ≤1,60 · Si ≤0,50 - ΔMn 0.05 - ΔSi 0.00 - 4 designations](/materials/din-en/s380nc "S380NC")[S420MC 1.0980 Mn ≤1,60 · Si ≤0,50 - ΔMn 0.05 - ΔSi 0.00 - 11 designations](/materials/din-en/s420mc "S420MC") ## 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=79771a74-6b21-4345-8a79-e4359f083d55&designation=278becb5-0d24-4e80-ac29-788e55d306a4 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/une/ae390hc.pdf "Datasheet as PDF")