--- title: "High-strength multi-phase steels — 5 grades" description: "High-strength multi-phase steels are iron-based materials with multiple microstructural constituents designed to provide high strength with useful…" canonical: https://steelequivalents.com/categories/high-strength-multi-phase-steels language: en robots: index, follow og_type: website type: category-detail language_alternates: en: https://steelequivalents.com/categories/high-strength-multi-phase-steels.md cs: https://steelequivalents.com/cs/kategorie/vysokopevnostní-vícefázové-oceli.md de: https://steelequivalents.com/de/kategorien/hochfeste-mehrphasenstähle.md es: https://steelequivalents.com/es/categorías/aceros-multifásicos-de-alta-resistencia.md fr: https://steelequivalents.com/fr/catégories/aciers-multiphasés-à-haute-résistance.md hu: https://steelequivalents.com/hu/kategóriák/nagyszilárdságú-többfázisú-acélok.md it: https://steelequivalents.com/it/categorie/acciai-multifase-ad-alta-resistenza.md nl: https://steelequivalents.com/nl/categorieën/hoogsterkte-meerfasenstalen.md pl: https://steelequivalents.com/pl/kategorie/wysokowytrzymałe-stale-wielofazowe.md pt: https://steelequivalents.com/pt/categorias/aços-multifásicos-de-alta-resistência.md ru: https://steelequivalents.com/ru/категории/высокопрочные-многофазные-стали.md tr: https://steelequivalents.com/tr/kategoriler/yüksek-mukavemetli-çok-fazlı-çelikler.md zh: https://steelequivalents.com/zh/类别/高强度多相钢.md ja: https://steelequivalents.com/ja/カテゴリー/高強度多相鋼.md ar: https://steelequivalents.com/ar/الفئات/فولاذ-متعدد-الأطوار-عالي-المقاومة.md ko: https://steelequivalents.com/ko/분류/고강도-다상강.md pt-br: https://steelequivalents.com/pt-br/categorias/aços-multifásicos-de-alta-resistência.md hi: https://steelequivalents.com/hi/श्रेणियाँ/उच्च-सामर्थ्य-बहु-फेज़-इस्पात.md content_hash: sha256:fc05cc2f2ef71b31d16347cc985aa3fc75f16cf08cf31b9e66d2a25f69319414 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/categories/high-strength-multi-phase-steels > Canonical URL: https://steelequivalents.com/categories/high-strength-multi-phase-steels > 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. ![High-strength multi-phase steels](/images/uploads/38875761-c7af-439b-bd16-49b013481c3e/high-strength-multi-phase-steels-category-stamped-reinforcements-1920x1080.jpg) Category · 5 grades # 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. | Grade | Material no. | B | C | Al | Si | P | S | |---|---|---|---|---|---|---|---| | [HDT750C](/materials/din-en/hdt750c "HDT750C") | [1.0956](/materials/material-no/1.0956 "1.0956") | ≤0,005 | ≤0,18 | ≤2,00 | ≤0,80 | 0,08 | 0,015 | | [HDT780C](/materials/din-en/hdt780c "HDT780C") | [1.0957](/materials/material-no/1.0957 "1.0957") | ≤0,005 | ≤0,18 | ≤2,00 | ≤0,80 | 0,08 | 0,015 | | [HDT950C](/materials/din-en/hdt950c "HDT950C") | [1.0958](/materials/material-no/1.0958 "1.0958") | ≤0,005 | ≤0,23 | ≤2,00 | ≤0,80 | 0,08 | 0,015 | | [HDT560F](/materials/din-en/hdt560f "HDT560F") | [1.0959](/materials/material-no/1.0959 "1.0959") | ≤0,005 | ≤0,18 | ≥0,015 | ≤0,50 | 0,025 | 0,01 | | [1.0961](/materials/material-no/1.0961 "1.0961") | [1.0961](/materials/material-no/1.0961 "1.0961") | ≤0,005 | ≤0,18 | ≥0,015 | ≤0,50 | 0,03 | 0,01 | ## Standards covering this category 15 - [**DIN / EN***5 grades*](/materials/din-en "DIN / EN — 5 grades in this category") - [**AISI / SAE***1 grade*](/materials/aisi-sae "AISI / SAE — 1 grade in this category") - [**BS***1 grade*](/materials/bs "BS — 1 grade in this category") - [**AFNOR***1 grade*](/materials/afnor "AFNOR — 1 grade in this category") - [**UNE***1 grade*](/materials/une "UNE — 1 grade in this category") - [**JIS***1 grade*](/materials/jis "JIS — 1 grade in this category") - [**GB***1 grade*](/materials/gb "GB — 1 grade in this category") - [**GOST***1 grade*](/materials/gost "GOST — 1 grade in this category") - [**UNI***1 grade*](/materials/uni "UNI — 1 grade in this category") - [**ČSN***1 grade*](/materials/csn "ČSN — 1 grade in this category") - [**PN***1 grade*](/materials/pn "PN — 1 grade in this category") - [**MSZ***1 grade*](/materials/msz "MSZ — 1 grade in this category") - [**AS / NZS***1 grade*](/materials/as-nzs "AS / NZS — 1 grade in this category") - [**BDS***1 grade*](/materials/bds "BDS — 1 grade in this category") - [**NBN***1 grade*](/materials/nbn "NBN — 1 grade in this category") ## Property ranges 14 | Property | Unit | Min | Max | Grades | |---|---|---|---|---| | Rm | N/mm² | 900 | 1270 | 1 | | Re | N/mm² | 1175 | 1175 | 1 | | A5 | % | 6 | 8 | 1 | | Z | % | 25 | 25 | 1 | | HB | — | 269 | 302 | 1 | | rho | g/cm³ | 7.52 | 7.85 | 5 | | E | GPa | 134 | 212 | 1 | | alpha | 10^-6/K | 11.8 | 14.5 | 1 | | lambda | W/(m·K) | 28 | 30 | 1 | | cp | J/(kg·K) | 510 | 700 | 1 | | Ac1 | °C | 770 | 770 | 1 | | Ac3 | °C | 820 | 820 | 1 | | Ar3 | °C | 770 | 770 | 1 | | Ar1 | °C | 700 | 700 | 1 | Derived from 5 grades in this category with a recorded value. ## Composition range 8 | Property | Unit | Min | Max | Grades | |---|---|---|---|---| | B | % | 0.005 | 0.005 | 5 | | C | % | 0.18 | 0.23 | 5 | | Al | % | 0.015 | 2 | 5 | | Si | % | 0.5 | 0.8 | 5 | | P | % | 0.025 | 0.08 | 5 | | S | % | 0.01 | 0.015 | 5 | | V | % | 0.15 | 0.2 | 5 | | Mn | % | 1.2 | 2.2 | 5 | Derived from 5 grades in this category with a recorded value. ## Related guides 2 - [**High-Strength Low-Alloy Steels: Grades, Microalloying, Processing, and Properties**](/wiki/steel-families/high-strength-low-alloy-steels "High-Strength Low-Alloy Steels: Grades, Microalloying, Processing, and Properties") - [**Steel Creep, Stress Rupture, and Long-Term High-Temperature Performance**](/wiki/reading-a-datasheet/steel-creep-stress-rupture-and-long-term-high-temperature-performance "Steel Creep, Stress Rupture, and Long-Term High-Temperature Performance")