--- title: "8Cr3 — composition, equivalents and standards" description: "8Cr3: 2 equivalent designations across 2 standards, with the recorded chemical composition shown next to the source text." canonical: https://steelequivalents.com/materials/gb/8cr3 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/gb/8cr3.md cs: https://steelequivalents.com/cs/materiály/gb/8cr3.md de: https://steelequivalents.com/de/werkstoffe/gb/8cr3.md es: https://steelequivalents.com/es/materiales/gb/8cr3.md fr: https://steelequivalents.com/fr/matériaux/gb/8cr3.md hu: https://steelequivalents.com/hu/anyagok/gb/8cr3.md it: https://steelequivalents.com/it/materiali/gb/8cr3.md nl: https://steelequivalents.com/nl/materialen/gb/8cr3.md pl: https://steelequivalents.com/pl/materiały/gb/8cr3.md pt: https://steelequivalents.com/pt/materiais/gb/8cr3.md ru: https://steelequivalents.com/ru/материалы/gb/8cr3.md tr: https://steelequivalents.com/tr/malzemeler/gb/8cr3.md zh: https://steelequivalents.com/zh/材料/gb/8cr3.md ja: https://steelequivalents.com/ja/材料/gb/8cr3.md ar: https://steelequivalents.com/ar/المواد/gb/8cr3.md ko: https://steelequivalents.com/ko/재료/gb/8cr3.md pt-br: https://steelequivalents.com/pt-br/materiais/gb/8cr3.md hi: https://steelequivalents.com/hi/सामग्री/gb/8cr3.md content_hash: sha256:997c2a2f2ad695538dbbbd28e7a3430ffd6c8223e560d656c14f282613c7e78d 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/gb/8cr3 > Canonical URL: https://steelequivalents.com/materials/gb/8cr3 > 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. GB · China · 2 designations # 8Cr3 8Cr3 is a grade designated under GB. Its recorded composition includes C 0.75–0.85%, Si ≤ 0.4%, P ≤ 0.03%, Cr 3.2–3.8% and Mn ≤ 0.4%. We list one designation recorded for this grade, in the standard GOST. - *Designations* **2** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=eed71dcc-b1ca-4d3f-8abd-0c20512c7174&designation=42076b81-932f-4dce-8d0a-cd751e9d44a1 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/gb/8cr3.pdf "Datasheet as PDF") ## Also known as 2 designations · 2 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. GB China · 1 - **8Cr3 This grade’s own name** GOST Russia / CIS · 1 - [8Х3 Indicative](/materials/gost/8kh3 "GOST 8Х3") 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 Cr C Si Iron — the balance, never listed by a standard — 94.8 % Cr — 3.5 % C — 0.8 % Si — 0.4 % Traces & impurities · 0.5 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | 0.75–0.85 | | Si | ≤ 0.4 | | Mn | ≤ 0.4 | | P | ≤ 0.03 | | S | ≤ 0.03 | | Cr | 3.2–3.8 | Carbon Silicon Manganese Phosphorus Sulfur Chromium 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 | 0.75-0.85 | 0.750 | 0.850 | Range | | Si | ≤0.4 | — | 0.400 | Max | | P | ≤0.03 | — | 0.030 | Max | | S | ≤0.03 | — | 0.030 | Max | | Cr | 3.2-3.8 | 3.200 | 3.800 | Range | | Mn | ≤0.4 | — | 0.400 | 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, 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. ## Heat treatment Supply condition - Annealing Supply condition - Quenching Test specimen 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/azhlNWIxNTQxNg__ "Source: www.caishuku.com") ## 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=eed71dcc-b1ca-4d3f-8abd-0c20512c7174&designation=42076b81-932f-4dce-8d0a-cd751e9d44a1 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/gb/8cr3.pdf "Datasheet as PDF")