--- title: "3Cr17Mo — composition, equivalents and standards" description: "3Cr17Mo: 1 equivalent designations across 1 standards, with the recorded chemical composition shown next to the source text." canonical: https://steelequivalents.com/materials/gb/3cr17mo language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/gb/3cr17mo.md cs: https://steelequivalents.com/cs/materiály/gb/3cr17mo.md de: https://steelequivalents.com/de/werkstoffe/gb/3cr17mo.md es: https://steelequivalents.com/es/materiales/gb/3cr17mo.md fr: https://steelequivalents.com/fr/matériaux/gb/3cr17mo.md hu: https://steelequivalents.com/hu/anyagok/gb/3cr17mo.md it: https://steelequivalents.com/it/materiali/gb/3cr17mo.md nl: https://steelequivalents.com/nl/materialen/gb/3cr17mo.md pl: https://steelequivalents.com/pl/materiały/gb/3cr17mo.md pt: https://steelequivalents.com/pt/materiais/gb/3cr17mo.md ru: https://steelequivalents.com/ru/материалы/gb/3cr17mo.md tr: https://steelequivalents.com/tr/malzemeler/gb/3cr17mo.md zh: https://steelequivalents.com/zh/材料/gb/3cr17mo.md ja: https://steelequivalents.com/ja/材料/gb/3cr17mo.md ar: https://steelequivalents.com/ar/المواد/gb/3cr17mo.md ko: https://steelequivalents.com/ko/재료/gb/3cr17mo.md pt-br: https://steelequivalents.com/pt-br/materiais/gb/3cr17mo.md hi: https://steelequivalents.com/hi/सामग्री/gb/3cr17mo.md content_hash: sha256:871eb29f76b1ecf1ef8a63106e7482c536c6efebc8767b113b355df40b30af64 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/3cr17mo > Canonical URL: https://steelequivalents.com/materials/gb/3cr17mo > 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 · 1 designation # 3Cr17Mo 3Cr17Mo is a grade designated under GB. Its recorded composition includes C 0.33–0.45%, Si ≤ 1%, Cr 15.5–17.5%, Mn ≤ 1.5% and Mo 0.8–1.3%. No cross-standard equivalents are recorded for this grade yet. Recorded mechanical properties include HB ≤ 285. - *Designations* **1** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=e0018023-1039-4cb0-a946-50fe1c878257&designation=a2facd10-c9f9-4951-b61e-817d852e42c6 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/gb/3cr17mo.pdf "Datasheet as PDF") ## Chemical composition 8 elements on file · weight % What this alloy is Fe Cr Mn Mo Iron — the balance, never listed by a standard — 78.5 % Cr — 16.5 % Mn — 1.5 % Mo — 1.1 % Traces & impurities · 2.4 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | 0.33–0.45 | | Si | ≤ 1 | | Mn | ≤ 1.5 | | P | ≤ 0.03 | | S | ≤ 0.03 | | Cr | 15.5–17.5 | | Mo | 0.8–1.3 | | Ni | ≤ 1 | Carbon Silicon Manganese Phosphorus Sulfur Chromium Molybdenum Nickel 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 | 0.33-0.45 | 0.330 | 0.450 | Range | | Si | ≤1 | — | 1.000 | Max | | P | ≤0.03 | — | 0.030 | Max | | S | ≤0.03 | — | 0.030 | Max | | Cr | 15.5-17.5 | 15.500 | 17.500 | Range | | Mn | ≤1.5 | — | 1.500 | Max | | Ni | ≤1 | — | 1.000 | Max | | Mo | 0.8-1.3 | 0.800 | 1.300 | Range | 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 This grade's composition falls outside the published model's validated range (a low-alloy composition window), so no transformation temperature is predicted here. ## 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 0 conditions · 0 values 1 further values are held for this grade under a condition the source did not name — a bound with no quantity attached. They are withheld rather than shown against a guessed condition. ## Heat treatment **GB /T 1299-2025** Single operation Test specimen - Quenching 1000–1040 °C Cooling Oil Supply condition - Quenching Test specimen - Annealing Supply condition 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/azhlNWIxMzUyNjE_ "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=e0018023-1039-4cb0-a946-50fe1c878257&designation=a2facd10-c9f9-4951-b61e-817d852e42c6 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/gb/3cr17mo.pdf "Datasheet as PDF")