--- title: "20864 — composition, equivalents and standards" description: "20864: 1 equivalent designations across 1 standards, with the recorded chemical composition shown next to the source text." canonical: https://steelequivalents.com/materials/gost/20864 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/gost/20864.md cs: https://steelequivalents.com/cs/materiály/gost/20864.md de: https://steelequivalents.com/de/werkstoffe/gost/20864.md es: https://steelequivalents.com/es/materiales/gost/20864.md fr: https://steelequivalents.com/fr/matériaux/gost/20864.md hu: https://steelequivalents.com/hu/anyagok/gost/20864.md it: https://steelequivalents.com/it/materiali/gost/20864.md nl: https://steelequivalents.com/nl/materialen/gost/20864.md pl: https://steelequivalents.com/pl/materiały/gost/20864.md pt: https://steelequivalents.com/pt/materiais/gost/20864.md ru: https://steelequivalents.com/ru/материалы/gost/20864.md tr: https://steelequivalents.com/tr/malzemeler/gost/20864.md zh: https://steelequivalents.com/zh/材料/gost/20864.md ja: https://steelequivalents.com/ja/材料/gost/20864.md ar: https://steelequivalents.com/ar/المواد/gost/20864.md ko: https://steelequivalents.com/ko/재료/gost/20864.md pt-br: https://steelequivalents.com/pt-br/materiais/gost/20864.md hi: https://steelequivalents.com/hi/सामग्री/gost/20864.md content_hash: sha256:f0950724d0e4a659c3d08c0ac8e0fcdcff37165ebd1c9dc0d9db7b913099df64 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/20864 > Canonical URL: https://steelequivalents.com/materials/gost/20864 > 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 # 20864 20864 is a grade designated under GOST. Its recorded composition includes C ≤ 0.035%, Si ≤ 0.3%, S ≤ 0.03%, Mn ≤ 0.3% and Cu ≤ 0.3%. No cross-standard equivalents are recorded for this grade yet. Recorded mechanical properties include Rm 270–350 N/mm², A5 4–24%, HB 131 and Z 60%; these figures vary with the delivery condition and dimension. Its weldability is recorded as good. - *Designations* **1** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=f165b8b4-1336-4acb-9b64-d780060b10c6&designation=428dc7cb-d710-43e3-9642-8f0097af234f "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/gost/20864.pdf "Datasheet as PDF") ## Chemical composition 6 elements on file · weight % What this alloy is Fe Si Mn Cu Iron — the balance, never listed by a standard — 99 % Si — 0.3 % Mn — 0.3 % Cu — 0.3 % Traces & impurities · 0.1 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | ≤ 0.035 | | Si | ≤ 0.3 | | Mn | ≤ 0.3 | | P | ≤ 0.02 | | S | ≤ 0.03 | | Cu | ≤ 0.3 | Carbon Silicon Manganese Phosphorus Sulfur Copper 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 | max 0.035 | — | 0.035 | Max | | Si | max 0.3 | — | 0.300 | Max | | P | max 0.02 | — | 0.020 | Max | | S | max 0.03 | — | 0.030 | Max | | Mn | max 0.3 | — | 0.300 | Max | | Cu | max 0.3 | — | 0.300 | 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 Weldability readily weldable As published: without limitations. 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 1 conditions · 6 values By delivery state**no delivery state stated** source `splav` | Delivery state | Rm N/mm² | A5% | Z% | HB | |---|---|---|---|---| | Bars hotrolled, GOST 11036-75 | 270 | 24 | 60 | — | | Bars cold-drawn , GOST 11036-75 | 350 | 4 | — | — | | (hot-rolled) , Bars GOST 11036 | — | — | — | 131 | 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=f165b8b4-1336-4acb-9b64-d780060b10c6&designation=428dc7cb-d710-43e3-9642-8f0097af234f "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/gost/20864.pdf "Datasheet as PDF")