--- title: "F.1442 — High-strength multi-phase steels" description: "F.1442 in UNE: material number 1.0961, also listed as HDT450F. Category: High-strength multi-phase steels. Designations recorded for this grade: 39." canonical: https://steelequivalents.com/materials/une/f-1442 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/une/f-1442.md cs: https://steelequivalents.com/cs/materiály/une/f-1442.md de: https://steelequivalents.com/de/werkstoffe/une/f-1442.md es: https://steelequivalents.com/es/materiales/une/f-1442.md fr: https://steelequivalents.com/fr/matériaux/une/f-1442.md hu: https://steelequivalents.com/hu/anyagok/une/f-1442.md it: https://steelequivalents.com/it/materiali/une/f-1442.md nl: https://steelequivalents.com/nl/materialen/une/f-1442.md pl: https://steelequivalents.com/pl/materiały/une/f-1442.md pt: https://steelequivalents.com/pt/materiais/une/f-1442.md ru: https://steelequivalents.com/ru/материалы/une/f-1442.md tr: https://steelequivalents.com/tr/malzemeler/une/f-1442.md zh: https://steelequivalents.com/zh/材料/une/f-1442.md ja: https://steelequivalents.com/ja/材料/une/f-1442.md ar: https://steelequivalents.com/ar/المواد/une/f-1442.md ko: https://steelequivalents.com/ko/재료/une/f-1442.md pt-br: https://steelequivalents.com/pt-br/materiais/une/f-1442.md hi: https://steelequivalents.com/hi/सामग्री/une/f-1442.md content_hash: sha256:3a84603ec976e7681dbb74fbdc97c0d91102d3f10f4e61ba3d0df0a6f42d791a generated: 2026-09-22 --- > **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/f-1442 > Canonical URL: https://steelequivalents.com/materials/une/f-1442 > 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 · 39 designations # F.1442 F.1442 is a designation in UNE for the material held under material number 1.0961, also listed as HDT450F. It is a material in the category High-strength multi-phase steels. We list 39 designations recorded for this grade, in the standards DIN / EN, AISI / SAE, BS, AFNOR, UNE, JIS, GB, GOST, UNI, ČSN, PN, MSZ, AS / NZS, BDS and NBN. - [*Material no.* **1.0961**](/materials/material-no/1.0961 "Material no.: 1.0961") - [*Category* **High-strength multi-phase steels · 5 grades**](/categories/high-strength-multi-phase-steels "Category: High-strength multi-phase steels · 5 grades") - *Designations* **39** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=c22f4151-f204-42bb-9734-19d12d55aa57&designation=681e1477-e182-459d-b339-5ea3d6c6fe3e "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/une/f-1442.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [DIN / EN HDT450F This grade’s own name](/materials/din-en/hdt450f "DIN / EN HDT450F") ## About High-strength multi-phase steels High-strength multi-phase steels are iron-based materials with multiple microstructural constituents designed to provide high strength with useful ductility. They are used for load-bearing and crash-relevant components where weight reduction, structural performance and energy absorption are important. This describes the material class as a whole. Always confirm the individual grade against the standard before ordering. ## Also known as 39 designations · 15 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 · 4 - [1.0961 Indicative](/materials/material-no/1.0961 "DIN / EN 1.0961") - [60SiCr7 Indicative](/materials/din-en/60sicr7 "DIN / EN 60SiCr7") - [HDT450F This grade’s own name](/materials/din-en/hdt450f "DIN / EN HDT450F") - [S340MGC This grade’s own name Withdrawn](/materials/din-en/s340mgc "DIN / EN S340MGC") AISI / SAE United States · 5 - [9260 Indicative](/materials/aisi-sae/9260 "AISI / SAE 9260") - [9262 Indicative](/materials/aisi-sae/9262 "AISI / SAE 9262") - [G92600 Indicative](/materials/uns/g92600 "AISI / SAE G92600") - [Gr.9260H Indicative](/materials/aisi-sae/gr-9260h "AISI / SAE Gr.9260H") - [H92600 Indicative](/materials/uns/h92600 "AISI / SAE H92600") BS United Kingdom · 5 - [250A53 Indicative](/materials/bs/250a53 "BS 250A53") - [250A61 Indicative](/materials/bs/250a61 "BS 250A61") - [251A58 Indicative](/materials/bs/251a58 "BS 251A58") - [251A60 Indicative](/materials/bs/251a60 "BS 251A60") - [251H60 Indicative](/materials/bs/251h60 "BS 251H60") AFNOR France · 3 - [60S7 Indicative](/materials/afnor/60s7 "AFNOR 60S7") - [60SC7 Indicative](/materials/afnor/60sc7 "AFNOR 60SC7") - [61SC7 Indicative](/materials/afnor/61sc7 "AFNOR 61SC7") UNE Spain · 5 - [60Si7 Indicative](/materials/din-en/60si7 "UNE 60Si7") - [60SiCr8 Indicative](/materials/une/60sicr8 "UNE 60SiCr8") - [F.1441 Indicative](/materials/une/f-1441 "UNE F.1441") - **F.1442 Indicative** - [F.1442-60SiCR8 Indicative](/materials/une/f-1442-60sicr8 "UNE F.1442-60SiCR8") JIS Japan · 2 - [SUP6 Indicative](/materials/jis/sup6 "JIS SUP6") - [SUP7 Indicative](/materials/jis/sup7 "JIS SUP7") GB China · 2 - [60Si2Mn Indicative](/materials/gb/60si2mn "GB 60Si2Mn") - [60Si2MnA Indicative](/materials/gb/60si2mna "GB 60Si2MnA") GOST Russia / CIS · 3 - [60S2 Indicative](/materials/gost/60s2 "GOST 60S2") - [60С2 Indicative](/materials/gost/60s2 "GOST 60С2") - [60СГА Indicative](/materials/gost/60sga "GOST 60СГА") UNI Italy · 2 - [60Si7 Indicative](/materials/din-en/60si7 "UNI 60Si7") - [60SiCr8 Indicative](/materials/une/60sicr8 "UNI 60SiCr8") ČSN Czechia · 1 - [13270 Indicative](/materials/csn/13270 "ČSN 13270") PN Poland · 1 - [60S2 Indicative](/materials/gost/60s2 "PN 60S2") MSZ Hungary · 1 - [61Si7 Indicative](/materials/msz/61si7 "MSZ 61Si7") AS / NZS Australia / New Zealand · 3 - [9260 Indicative](/materials/aisi-sae/9260 "AS / NZS 9260") - [9260H Indicative](/materials/aisi-sae/9260h "AS / NZS 9260H") - [XK9258S Indicative](/materials/as-nzs/xk9258s "AS / NZS XK9258S") BDS Bulgaria · 1 - [60S2 Indicative](/materials/gost/60s2 "BDS 60S2") NBN Belgium · 1 - [60Si7 Indicative](/materials/din-en/60si7 "NBN 60Si7") 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 Mn Si C Iron — the balance, never listed by a standard — 97.9 % Mn — 1.2 % Si — 0.5 % C — 0.2 % Traces & impurities · 0.2 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | ≤ 0.18 | | Si | ≤ 0.5 | | Mn | ≤ 1.2 | | P | 0.03 | | S | 0.01 | | V | ≤ 0.15 | | Al | ≥ 0.015 | | B | ≤ 0.005 | Carbon Silicon Manganese Phosphorus Sulfur Vanadium Aluminium Boron 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 | |---|---|---|---|---| | B | ≤0,005 | — | 0.005 | Max | | C | ≤0,18 | — | 0.180 | Max | | Al | ≥0,015 | 0.015 | — | Min | | Si | ≤0,50 | — | 0.500 | Max | | P | 0,03 | 0.030 | 0.030 | Exact | | S | 0,01 | 0.010 | 0.010 | Exact | | V | ≤0,15 | — | 0.150 | Max | | Mn | ≤1,20 | — | 1.200 | Max | - (Cr+Mo)≤0,30; (Nb+Ti)≤0,05 - (Cr+Mo)≤0,30; (Nb+Ti)≤0,05 - (Cr+Mo)≤0,30; (Nb+Ti)≤0,05 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 Transformation point Ac1 770 °C Exact Transformation point Ac3 820 °C Exact · Ac3(Acm) Transformation point Ar3 770 °C Exact · Ar3(Arcm) Transformation point Ar1 700 °C Exact Weldability not suitable for welding As published: is not used. Flake sensitivity not susceptible As published: not predisposed Temper brittleness not susceptible As published: not predisposed 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 3 conditions · 48 values By delivery state**no delivery state stated** source `splav` | Delivery state | Rm N/mm² | A5% | HB | |---|---|---|---| | Band annealed | 900 | 8 | — | | (annealing) , GOST 14959-79 | — | — | 269 | | (without heat treatment) , GOST 14959 | — | — | 302 | By heat-treated condition**no delivery state stated** source `splav` | Heat-treated condition | Rm N/mm² | Re N/mm² | A5% | Z% | |---|---|---|---|---| | Rolled stock, GOST 14959-79 | 1270 | 1175 | 6 | 25 | At temperature**no delivery state stated** source `splav` | Temperature °C | Density g/cm³ | Elastic modulus GPa | Thermal expansion coefficient 10^-6/K | Thermal conductivity W/(m·K) | Specific heat capacity J/(kg·K) | |---|---|---|---|---|---| | 20 | 7.68 | 212 | — | 28 | — | | 100 | 7.66 | 206 | 11.8 | 29 | 510 | | 200 | 7.63 | 198 | 12.7 | 29 | 510 | | 300 | 7.59 | 192 | 13.3 | 30 | 520 | | 400 | 7.57 | 181 | 13.7 | 30 | 535 | | 500 | 7.52 | 178 | 14.1 | 30 | 565 | | 600 | — | 158 | 14.5 | 29 | 585 | | 700 | — | 144 | 14.4 | 29 | 620 | | 800 | — | 134 | 12.2 | 28 | 700 | 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. [HDT560F 1.0959 Mn ≤1,80 · Si ≤0,50 - ΔMn 0.30 - ΔSi 0.00 - 2 designations](/materials/din-en/hdt560f "HDT560F")[HDT750C 1.0956 Mn ≤2,20 · Si ≤0,80 - ΔMn 0.50 - ΔSi 0.15 - 1 designations](/materials/din-en/hdt750c "HDT750C")[HDT780C 1.0957 Mn ≤2,20 · Si ≤0,80 - ΔMn 0.50 - ΔSi 0.15 - 1 designations](/materials/din-en/hdt780c "HDT780C")[HDT950C 1.0958 Mn ≤2,20 · Si ≤0,80 - ΔMn 0.50 - ΔSi 0.15 - 1 designations](/materials/din-en/hdt950c "HDT950C") ## 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=c22f4151-f204-42bb-9734-19d12d55aa57&designation=681e1477-e182-459d-b339-5ea3d6c6fe3e "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/une/f-1442.pdf "Datasheet as PDF")