--- title: "St02FK40 — Unalloyed structural steels" description: "St02FK40 in ÖNORM: material number 1.0322, also listed as DX 56 D. Category: Unalloyed structural steels. Designations recorded for this grade: 60." canonical: https://steelequivalents.com/materials/onorm/st02fk40 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/onorm/st02fk40.md cs: https://steelequivalents.com/cs/materiály/onorm/st02fk40.md de: https://steelequivalents.com/de/werkstoffe/onorm/st02fk40.md es: https://steelequivalents.com/es/materiales/onorm/st02fk40.md fr: https://steelequivalents.com/fr/matériaux/onorm/st02fk40.md hu: https://steelequivalents.com/hu/anyagok/onorm/st02fk40.md it: https://steelequivalents.com/it/materiali/onorm/st02fk40.md nl: https://steelequivalents.com/nl/materialen/onorm/st02fk40.md pl: https://steelequivalents.com/pl/materiały/onorm/st02fk40.md pt: https://steelequivalents.com/pt/materiais/onorm/st02fk40.md ru: https://steelequivalents.com/ru/материалы/onorm/st02fk40.md tr: https://steelequivalents.com/tr/malzemeler/onorm/st02fk40.md zh: https://steelequivalents.com/zh/材料/onorm/st02fk40.md ja: https://steelequivalents.com/ja/材料/onorm/st02fk40.md ar: https://steelequivalents.com/ar/المواد/onorm/st02fk40.md ko: https://steelequivalents.com/ko/재료/onorm/st02fk40.md pt-br: https://steelequivalents.com/pt-br/materiais/onorm/st02fk40.md hi: https://steelequivalents.com/hi/सामग्री/onorm/st02fk40.md content_hash: sha256:ae7026196d69b7b8c4a64ad4ffd0e04658695f8f5a2df85ce4f6b43cb17edc51 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/onorm/st02fk40 > Canonical URL: https://steelequivalents.com/materials/onorm/st02fk40 > 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. ÖNORM · Austria · 60 designations # St02FK40 St02FK40 is a designation in ÖNORM for the material held under material number 1.0322, also listed as DX 56 D. It is a material in the category Unalloyed structural steels. We list 60 designations recorded for this grade, in the standards DIN / EN, AISI / SAE, BS, AFNOR, UNE, JIS, GB, GOST, UNI, SS, ČSN, PN, MSZ, AS / NZS, STAS, BDS, ÖNORM and SFS. - [*Material no.* **1.0322**](/materials/material-no/1.0322 "Material no.: 1.0322") - [*Category* **Unalloyed structural steels · 452 grades**](/categories/unalloyed-structural-steels "Category: Unalloyed structural steels · 452 grades") - *Designations* **60** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=cd007f1f-0b6a-4c89-8c11-c315e696be7b&designation=fee4c186-4384-4cbf-9178-ada0a62b6878 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/onorm/st02fk40.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [DIN / EN DX 56 D This grade’s own name](/materials/din-en/dx-56-d "DIN / EN DX 56 D") ## About Unalloyed structural steels Unalloyed structural steels include all low-carbon steels in which the iron companions do not exceed specified minimum values. The yield strength, formability and weldability are the decisive factors for their use. They are soft, pliable, tough and stretchy, but cannot be hardened by heat treatment. This describes the material class as a whole. Always confirm the individual grade against the standard before ordering. ## Also known as 60 designations · 18 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 · 1 - [DX 56 D This grade’s own name](/materials/din-en/dx-56-d "DIN / EN DX 56 D") AISI / SAE United States · 6 - [1008 Indicative](/materials/aisi-sae/1008 "AISI / SAE 1008") - [1010 Indicative](/materials/aisi-sae/1010 "AISI / SAE 1010") - [A619 Indicative](/materials/aisi-sae/a619 "AISI / SAE A619") - [A622 Indicative](/materials/aisi-sae/a622 "AISI / SAE A622") - [G10080 Indicative](/materials/uns/g10080 "AISI / SAE G10080") - [G10120 Indicative](/materials/uns/g10120 "AISI / SAE G10120") BS United Kingdom · 6 - [040A10 Indicative](/materials/bs/040a10 "BS 040A10") - [1449-1HR Indicative](/materials/bs/1449-1hr "BS 1449-1HR") - [1HR Indicative](/materials/bs/1hr "BS 1HR") - [2HR Indicative](/materials/bs/2hr "BS 2HR") - [DC01 Indicative](/materials/din-en/dc01 "BS DC01") - [DD13 Indicative](/materials/din-en/dd13 "BS DD13") AFNOR France · 7 - [3C Indicative](/materials/afnor/3c "AFNOR 3C") - [DC01 Indicative](/materials/din-en/dc01 "AFNOR DC01") - [DD13 Indicative](/materials/din-en/dd13 "AFNOR DD13") - [FB8 Indicative](/materials/afnor/fb8 "AFNOR FB8") - [Fd4 Indicative](/materials/afnor/fd4 "AFNOR Fd4") - [FR8 Indicative](/materials/afnor/fr8 "AFNOR FR8") - [XC6 Indicative](/materials/afnor/xc6 "AFNOR XC6") UNE Spain · 3 - [AP13 Indicative](/materials/une/ap13 "UNE AP13") - [DC01 Indicative](/materials/din-en/dc01 "UNE DC01") - [DD13 Indicative](/materials/din-en/dd13 "UNE DD13") JIS Japan · 4 - [SPCC Indicative](/materials/jis/spcc "JIS SPCC") - [SPHE Indicative](/materials/ks/sphe "JIS SPHE") - [SWRCH10R Indicative](/materials/jis/swrch10r "JIS SWRCH10R") - [SWRCH8R Indicative](/materials/jis/swrch8r "JIS SWRCH8R") GB China · 2 - [08F Indicative](/materials/gb/08f "GB 08F") - [ML08 Indicative](/materials/gb/ml08 "GB ML08") GOST Russia / CIS · 2 - [08kp Indicative](/materials/gost/08kp "GOST 08kp") - [08кп Indicative](/materials/gost/08kp "GOST 08кп") UNI Italy · 2 - [DC01 Indicative](/materials/din-en/dc01 "UNI DC01") - [FeP13 Indicative](/materials/uni/fep13 "UNI FeP13") SS Sweden · 1 - [1147 Indicative](/materials/ss/1147 "SS 1147") ČSN Czechia · 4 - [11304 Indicative](/materials/csn/11304 "ČSN 11304") - [11320 Indicative](/materials/csn/11320 "ČSN 11320") - [11321 Indicative](/materials/csn/11321 "ČSN 11321") - [11325 Indicative](/materials/csn/11325 "ČSN 11325") PN Poland · 1 - [08X Indicative](/materials/pn/08x "PN 08X") MSZ Hungary · 1 - [ASZ2 Indicative](/materials/msz/asz2 "MSZ ASZ2") AS / NZS Australia / New Zealand · 8 - [1008 Indicative](/materials/aisi-sae/1008 "AS / NZS 1008") - [CA1 Indicative](/materials/as-nzs/ca1 "AS / NZS CA1") - [CA2 Indicative](/materials/as-nzs/ca2 "AS / NZS CA2") - [CA3 Indicative](/materials/as-nzs/ca3 "AS / NZS CA3") - [CA4 Indicative](/materials/as-nzs/ca4 "AS / NZS CA4") - [HA1 Indicative](/materials/as-nzs/ha1 "AS / NZS HA1") - [HA3 Indicative](/materials/as-nzs/ha3 "AS / NZS HA3") - [HA4N Indicative](/materials/as-nzs/ha4n "AS / NZS HA4N") STAS Romania · 1 - [A1n Indicative](/materials/stas/a1n "STAS A1n") BDS Bulgaria · 3 - [08 Indicative](/materials/bds/08 "BDS 08") - [DD11 Indicative](/materials/din-en/dd11 "BDS DD11") - [DD13 Indicative](/materials/din-en/dd13 "BDS DD13") ÖNORM Austria · 7 - [St02F Indicative](/materials/onorm/st02f "ÖNORM St02F") - [St02FK32 Indicative](/materials/onorm/st02fk32 "ÖNORM St02FK32") - **St02FK40 Indicative** - [St02FK50 Indicative](/materials/onorm/st02fk50 "ÖNORM St02FK50") - [St02FK60 Indicative](/materials/onorm/st02fk60 "ÖNORM St02FK60") - [St02FK70 Indicative](/materials/onorm/st02fk70 "ÖNORM St02FK70") - [St24F Indicative](/materials/onorm/st24f "ÖNORM St24F") SFS Finland · 1 - [RACOLD01F Indicative](/materials/sfs/racold01f "SFS RACOLD01F") Every designation on file is listed — no truncation, no “+ n more”. Each one is itself a route that leads back here. ## Chemical composition 6 elements on file · weight % What this alloy is Fe Mn Si Ti Iron — the balance, never listed by a standard — 98.3 % Mn — 0.6 % Si — 0.5 % Ti — 0.3 % Traces & impurities · 0.3 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | ≤ 0.12 | | Si | ≤ 0.5 | | Mn | ≤ 0.6 | | P | 0.1 — Unusual | | S | 0.045 | | Ti | ≤ 0.3 | Carbon Silicon Manganese Phosphorus Sulfur Titanium 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 | | Si | ≤0,50 | — | 0.500 | Max | | P | 0,1 | 0.100 | 0.100 | Exact | | S | 0,045 | 0.045 | 0.045 | Exact | | Ti | ≤0,30 | — | 0.300 | Max | | Mn | ≤0,60 | — | 0.600 | 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 ReH 120-180MPa N/mm² Range Rm 260-350MPa N/mm² Range A80 (N) ≥37/39%% No numeric bound 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. ## Heat treatment Supply condition - Normalizing Conditions the standard permits on delivery. No temperature or medium is published for these, so no order and no alternation is implied. Source: [www.caishuku.com](https://www.caishuku.com/detail/azhlNWIxOTYxMQ__ "Source: www.caishuku.com") ## 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. [DX 54 D 1.0306 Mn ≤0,60 · Si ≤0,50 - ΔMn 0.00 - ΔSi 0.00 - 3 designations](/materials/din-en/dx-54-d "DX 54 D")[DX 55 D 1.0309 Mn ≤0,60 · Si ≤0,50 - ΔMn 0.00 - ΔSi 0.00 - 3 designations](/materials/din-en/dx-55-d "DX 55 D")[H 220 G 1 1.0346 Mn ≤0,60 · Si ≤0,50 - ΔMn 0.00 - ΔSi 0.00 - 7 designations](/materials/din-en/h-220-g-1 "H 220 G 1")[DX 52 D 1.0350 Mn ≤0,60 · Si ≤0,50 - ΔMn 0.00 - ΔSi 0.00 - 4 designations](/materials/din-en/dx-52-d "DX 52 D")[DX 53 D 1.0355 Mn ≤0,60 · Si ≤0,50 - ΔMn 0.00 - ΔSi 0.00 - 5 designations](/materials/din-en/dx-53-d "DX 53 D")[DX 57 D 1.0853 Mn ≤0,60 · Si ≤0,50 - ΔMn 0.00 - ΔSi 0.00 - 1 designations](/materials/din-en/dx-57-d "DX 57 D") ## 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=cd007f1f-0b6a-4c89-8c11-c315e696be7b&designation=fee4c186-4384-4cbf-9178-ada0a62b6878 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/onorm/st02fk40.pdf "Datasheet as PDF")