--- title: "1.5024 — Spring steels" description: "1.5024 is the material number of the grade also listed as 46Si7. It is a material in the category Spring steels. Designations recorded for this grade: 11." canonical: https://steelequivalents.com/materials/material-no/1.5024 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/material-no/1.5024.md cs: https://steelequivalents.com/cs/materiály/číslo-materiálu/1.5024.md de: https://steelequivalents.com/de/werkstoffe/werkstoff-nr/1.5024.md es: https://steelequivalents.com/es/materiales/número-de-material/1.5024.md fr: https://steelequivalents.com/fr/matériaux/numéro-de-matériau/1.5024.md hu: https://steelequivalents.com/hu/anyagok/anyagszám/1.5024.md it: https://steelequivalents.com/it/materiali/numero-materiale/1.5024.md nl: https://steelequivalents.com/nl/materialen/materiaalnummer/1.5024.md pl: https://steelequivalents.com/pl/materiały/numer-materiału/1.5024.md pt: https://steelequivalents.com/pt/materiais/número-do-material/1.5024.md ru: https://steelequivalents.com/ru/материалы/номер-материала/1.5024.md tr: https://steelequivalents.com/tr/malzemeler/malzeme-numarası/1.5024.md zh: https://steelequivalents.com/zh/材料/材料编号/1.5024.md ja: https://steelequivalents.com/ja/材料/材料番号/1.5024.md ar: https://steelequivalents.com/ar/المواد/رقم-المادة/1.5024.md ko: https://steelequivalents.com/ko/재료/재료번호/1.5024.md pt-br: https://steelequivalents.com/pt-br/materiais/número-do-material/1.5024.md hi: https://steelequivalents.com/hi/सामग्री/सामग्री-संख्या/1.5024.md content_hash: sha256:e1b09244d3ed51f2f17df1bf433ae9f01cd52ca4cbb14c28172c588ae645f121 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/material-no/1.5024 > Canonical URL: https://steelequivalents.com/materials/material-no/1.5024 > 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. Material number · Europe · 11 designations # 1.5024 1.5024 is the material number of the grade also listed as 46Si7. It is a material in the category Spring steels. We list 11 designations recorded for this grade, in the standards DIN / EN, AISI / SAE, AFNOR, GOST, ČSN, PN and SRPS. - ***Material no.* **1.5024**** - [*Category* **Spring steels · 52 grades**](/categories/spring-steels "Category: Spring steels · 52 grades") - *Designations* **11** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=691bc73d-0271-4457-bb8e-c290c49f9ee3 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/material-no/1.5024.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [DIN / EN 46Si7 This grade’s own name](/materials/din-en/46si7 "DIN / EN 46Si7") - [AISI / SAE 9250 This grade’s own name](/materials/aisi-sae/9250 "AISI / SAE 9250") - [AFNOR 45S7 This grade’s own name](/materials/afnor/45s7 "AFNOR 45S7") ## About Spring steels Spring steels are alloy steels designed to store and release elastic energy repeatedly without permanent deformation. They are characterised by a combination of strength, hardness and resilience, making them suitable for springs, clips, washers and other components subjected to repeated flexing or shock. This describes the material class as a whole. Always confirm the individual grade against the standard before ordering. ## Also known as 11 designations · 7 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 - [46Si7 This grade’s own name](/materials/din-en/46si7 "DIN / EN 46Si7") AISI / SAE United States · 1 - [9250 This grade’s own name](/materials/aisi-sae/9250 "AISI / SAE 9250") AFNOR France · 1 - [45S7 This grade’s own name](/materials/afnor/45s7 "AFNOR 45S7") GOST Russia / CIS · 2 - [40С2 Indicative](/materials/gost/40s2 "GOST 40С2") - [55С2 Indicative](/materials/gost/55s2 "GOST 55С2") ČSN Czechia · 2 - [13 151 Indicative](/materials/csn/13-151 "ČSN 13 151") - [13251 Indicative](/materials/csn/13251 "ČSN 13251") PN Poland · 3 - [40S2 Indicative](/materials/gost/40s2 "PN 40S2") - [50S2 Indicative](/materials/gost/50s2 "PN 50S2") - [55S2 Indicative](/materials/gost/55s2 "PN 55S2") SRPS Serbia · 1 - [Č.2131 Indicative](/materials/srps/c-2131 "SRPS Č.2131") 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 Si Mn C Iron — the balance, never listed by a standard — 97.2 % Si — 1.7 % Mn — 0.7 % C — 0.5 % Traces & impurities · 0.1 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | 0.42–0.5 | | Si | 1.5–1.8 | | Mn | 0.5–0.8 | | P | 0.025 | | S | 0.025 | | N | 0.007 | Carbon Silicon Manganese Phosphorus Sulfur 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 | 0,42-0,50 | 0.420 | 0.500 | Range | | N | 0,007 | 0.007 | 0.007 | Exact | | Si | 1,50-1,80 | 1.500 | 1.800 | Range | | P | 0,025 | 0.025 | 0.025 | Exact | | S | 0,025 | 0.025 | 0.025 | Exact | | Mn | 0,50-0,80 | 0.500 | 0.800 | Range | - Cu+10Sn ≤0,60 - Cu+10Sn ≤0,60 - Cu+10Sn ≤0,60 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 7,45 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 3 conditions · 3 values By delivery state**Treated to improve shearability** source `steelnumber` | Delivery state | HB | |---|---| | Treated to improve shearability | 280 | By delivery state**Soft annealed** source `steelnumber` | Delivery state | HB | |---|---| | Soft annealed | 248 | By delivery state**Annealed to achieve spheroidization of the carbides** source `steelnumber` | Delivery state | HB | |---|---| | Annealed to achieve spheroidization of the carbides | 230 | 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 1.5, a shared category, and a published range for Si / Mn 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. [38Si7 1.5023 Si 1,50-1,80 · Mn 0,50-0,80 - ΔSi 0.00 - ΔMn 0.00 - 7 designations](/materials/din-en/38si7 "38Si7")[51Si7 1.5025 Si 1,50-1,80 · Mn 0,50-0,80 - ΔSi 0.00 - ΔMn 0.00 - 9 designations](/materials/din-en/51si7 "51Si7")[71Si7 1.5029 Si 1,50-1,80 · Mn 0,60-0,80 - ΔSi 0.00 - ΔMn 0.05 - 1 designations](/materials/din-en/71si7 "71Si7")[38Si6 1.5022 Si 1,40-1,60 · Mn 0,50-0,80 - ΔSi 0.15 - ΔMn 0.00 - 1 designations](/materials/din-en/38si6 "38Si6")[60Si7 1.5027 Si 1,50-1,80 · Mn 0,70-1,00 - ΔSi 0.00 - ΔMn 0.20 - 18 designations](/materials/din-en/60si7 "60Si7")[65Si7 1.5028 Si 1,50-1,80 · Mn 0,70-1,00 - ΔSi 0.00 - ΔMn 0.20 - 17 designations](/materials/din-en/65si7 "65Si7") ## 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=691bc73d-0271-4457-bb8e-c290c49f9ee3 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/material-no/1.5024.pdf "Datasheet as PDF")