--- title: "10Х17СЮ — Heat resistant steels" description: "10Х17СЮ in GOST: material number 1.4713, also listed as X10CrAl7. Category: Heat resistant steels. Designations recorded for this grade: 14." canonical: https://steelequivalents.com/materials/gost/10kh17syu language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/gost/10kh17syu.md cs: https://steelequivalents.com/cs/materiály/gost/10kh17syu.md de: https://steelequivalents.com/de/werkstoffe/gost/10kh17syu.md es: https://steelequivalents.com/es/materiales/gost/10kh17syu.md fr: https://steelequivalents.com/fr/matériaux/gost/10kh17syu.md hu: https://steelequivalents.com/hu/anyagok/gost/10kh17syu.md it: https://steelequivalents.com/it/materiali/gost/10kh17syu.md nl: https://steelequivalents.com/nl/materialen/gost/10kh17syu.md pl: https://steelequivalents.com/pl/materiały/gost/10kh17syu.md pt: https://steelequivalents.com/pt/materiais/gost/10kh17syu.md ru: https://steelequivalents.com/ru/материалы/gost/10х17сю.md tr: https://steelequivalents.com/tr/malzemeler/gost/10kh17syu.md zh: https://steelequivalents.com/zh/材料/gost/10kh17syu.md ja: https://steelequivalents.com/ja/材料/gost/10kh17syu.md ar: https://steelequivalents.com/ar/المواد/gost/10kh17syu.md ko: https://steelequivalents.com/ko/재료/gost/10kh17syu.md pt-br: https://steelequivalents.com/pt-br/materiais/gost/10kh17syu.md hi: https://steelequivalents.com/hi/सामग्री/gost/10kh17syu.md content_hash: sha256:73aac8a640c0c8024222e3a0beec931fd3ab057e412220747c7b07a70f8d2c35 generated: 2026-09-22 --- > **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/10kh17syu > Canonical URL: https://steelequivalents.com/materials/gost/10kh17syu > 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 · 14 designations # 10Х17СЮ 10Х17СЮ is a designation in GOST for the material held under material number 1.4713, also listed as X10CrAl7. It is a material in the category Heat resistant steels. We list 14 designations recorded for this grade, in the standards DIN / EN, AFNOR, GOST, UNI, ČSN, STN, SRPS and PN. - [*Material no.* **1.4713**](/materials/material-no/1.4713 "Material no.: 1.4713") - [*Category* **Heat resistant steels · 64 grades**](/categories/heat-resistant-steels "Category: Heat resistant steels · 64 grades") - *Designations* **14** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=bc507959-79f7-4b16-951b-ce0f4e8c6c1c&designation=85e7c786-f7ec-48b3-adab-80a3516c285f "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/gost/10kh17syu.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [DIN / EN X10CrAlSi7 This grade’s own name](/materials/din-en/x10cralsi7 "DIN / EN X10CrAlSi7") ## About Heat resistant steels Heat resistant steels are alloyed materials designed to retain useful mechanical properties and resist oxidation or scaling during service at elevated temperatures. They are used for components in furnaces, boilers, heat exchangers and power-generation equipment exposed to hot gases or sustained heat. This describes the material class as a whole. Always confirm the individual grade against the standard before ordering. ## Also known as 14 designations · 8 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 · 2 - [X10CrAl7 This grade’s own name Withdrawn](/materials/din-en/x10cral7 "DIN / EN X10CrAl7") - [X10CrAlSi7 This grade’s own name](/materials/din-en/x10cralsi7 "DIN / EN X10CrAlSi7") AFNOR France · 1 - [Z8CA7 Indicative](/materials/afnor/z8ca7 "AFNOR Z8CA7") GOST Russia / CIS · 6 - **10Х17СЮ Indicative** - [15KH6SYU Indicative](/materials/gost/15kh6syu "GOST 15KH6SYU") - [15Х6СЮ Indicative](/materials/gost/15kh6syu "GOST 15Х6СЮ") - [Sv-10Kh17T Indicative](/materials/gost/sv-10kh17t "GOST Sv-10Kh17T") - [Х6СЮ Indicative](/materials/gost/kh6syu "GOST Х6СЮ") - [ЭИ428 Indicative](/materials/gost/ei428 "GOST ЭИ428") UNI Italy · 1 - [X7AL Indicative](/materials/uni/x7al "UNI X7AL") ČSN Czechia · 1 - [17113 Indicative](/materials/csn/17113 "ČSN 17113") STN Slovakia · 1 - [17 113 Indicative](/materials/csn/17113 "STN 17 113") SRPS Serbia · 1 - [Č.4974 Indicative](/materials/srps/c-4974 "SRPS Č.4974") PN Poland · 1 - [H6S2 Indicative](/materials/pn/h6s2 "PN H6S2") Every designation on file is listed — no truncation, no “+ n more”. Each one is itself a route that leads back here. ## Chemical composition 7 elements on file · weight % What this alloy is Fe Cr Mn Si Iron — the balance, never listed by a standard — 90.3 % Cr — 7 % Mn — 1 % Si — 0.8 % Traces & impurities · 0.9 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | ≤ 0.12 | | Si | 0.5–1 | | Mn | ≤ 1 | | P | 0.04 | | S | 0.015 | | Cr | 6–8 | | Al | 0.5–1 | Carbon Silicon Manganese Phosphorus Sulfur Chromium Aluminium 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 | ≤0,12 | — | 0.120 | Max | | Al | 0,50-1,00 | 0.500 | 1.000 | Range | | Si | 0,50-1,00 | 0.500 | 1.000 | Range | | P | 0,04 | 0.040 | 0.040 | Exact | | S | 0,015 | 0.015 | 0.015 | Exact | | Cr | 6,00-8,00 | 6.000 | 8.000 | Range | | Mn | ≤1,00 | — | 1.000 | 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 Density 7,7 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 2 conditions · 5 values By delivery state**Soft annealed** source `steelnumber` | Delivery state | HB | |---|---| | Soft annealed | 192 | By heat-treated condition**no delivery state stated** source `splav` | Heat-treated condition | Rm N/mm² | Re N/mm² | A5% | Z% | |---|---|---|---|---| | Bar, GOST 5949-75 | 440 | 245 | 20 | 40 | 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=bc507959-79f7-4b16-951b-ce0f4e8c6c1c&designation=85e7c786-f7ec-48b3-adab-80a3516c285f "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/gost/10kh17syu.pdf "Datasheet as PDF")