--- title: "2421 — composition, equivalents and standards" description: "2421: 1 equivalent designations across 1 standards, with the recorded chemical composition shown next to the source text." canonical: https://steelequivalents.com/materials/gost/2421 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/gost/2421.md cs: https://steelequivalents.com/cs/materiály/gost/2421.md de: https://steelequivalents.com/de/werkstoffe/gost/2421.md es: https://steelequivalents.com/es/materiales/gost/2421.md fr: https://steelequivalents.com/fr/matériaux/gost/2421.md hu: https://steelequivalents.com/hu/anyagok/gost/2421.md it: https://steelequivalents.com/it/materiali/gost/2421.md nl: https://steelequivalents.com/nl/materialen/gost/2421.md pl: https://steelequivalents.com/pl/materiały/gost/2421.md pt: https://steelequivalents.com/pt/materiais/gost/2421.md ru: https://steelequivalents.com/ru/материалы/gost/2421.md tr: https://steelequivalents.com/tr/malzemeler/gost/2421.md zh: https://steelequivalents.com/zh/材料/gost/2421.md ja: https://steelequivalents.com/ja/材料/gost/2421.md ar: https://steelequivalents.com/ar/المواد/gost/2421.md ko: https://steelequivalents.com/ko/재료/gost/2421.md pt-br: https://steelequivalents.com/pt-br/materiais/gost/2421.md hi: https://steelequivalents.com/hi/सामग्री/gost/2421.md content_hash: sha256:7443a93a8f37df22cc4f9de0aeb4cf3ead0441566940fe07ccf2dcefb14c9372 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/gost/2421 > Canonical URL: https://steelequivalents.com/materials/gost/2421 > 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. GOST · Russia / CIS · 1 designation # 2421 2421 is a grade designated under GOST. Recorded mechanical properties include Rm 370–600 N/mm² and A5 15–30%. Its recorded density is 7.6 g/cm³. Further recorded physical values: ρ el. 500 nΩ·m. We hold no composition or cross-standard equivalents for it yet. - *Designations* **1** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=f986a369-b884-4127-b2fb-e566e3b02609&designation=79c7d8c3-ba89-4e9f-b045-57d42d030be5 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/gost/2421.pdf "Datasheet as PDF") ## Predicted transformation temperatures Not enough recorded composition to predict a transformation temperature for this grade — missing: C, Mn, Si, Ni, Cr, Mo. ## Physical & mechanical properties 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 · 4 values By delivery state**no delivery state stated** source `splav` | Delivery state | Rm N/mm² | A5% | |---|---|---| | Sheet cold-rolled, GOST 21427.2-83 | 370 – 600 | 15 – 30 | At temperature**no delivery state stated** source `splav` | Temperature °C | Density g/cm³ | Electrical resistivity nΩ·m | |---|---|---| | 20 | 7.6 | 500 | 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. ## 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=f986a369-b884-4127-b2fb-e566e3b02609&designation=79c7d8c3-ba89-4e9f-b045-57d42d030be5 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/gost/2421.pdf "Datasheet as PDF")