--- title: "10Ch13SJu — Heat resistant steels" description: "10Ch13SJu in GOST: material number 1.4724, also listed as X10CrAl13. Category: Heat resistant steels. Designations recorded for this grade: 33." canonical: https://steelequivalents.com/materials/gost/10ch13sju language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/gost/10ch13sju.md cs: https://steelequivalents.com/cs/materiály/gost/10ch13sju.md de: https://steelequivalents.com/de/werkstoffe/gost/10ch13sju.md es: https://steelequivalents.com/es/materiales/gost/10ch13sju.md fr: https://steelequivalents.com/fr/matériaux/gost/10ch13sju.md hu: https://steelequivalents.com/hu/anyagok/gost/10ch13sju.md it: https://steelequivalents.com/it/materiali/gost/10ch13sju.md nl: https://steelequivalents.com/nl/materialen/gost/10ch13sju.md pl: https://steelequivalents.com/pl/materiały/gost/10ch13sju.md pt: https://steelequivalents.com/pt/materiais/gost/10ch13sju.md ru: https://steelequivalents.com/ru/материалы/gost/10ch13sju.md tr: https://steelequivalents.com/tr/malzemeler/gost/10ch13sju.md zh: https://steelequivalents.com/zh/材料/gost/10ch13sju.md ja: https://steelequivalents.com/ja/材料/gost/10ch13sju.md ar: https://steelequivalents.com/ar/المواد/gost/10ch13sju.md ko: https://steelequivalents.com/ko/재료/gost/10ch13sju.md pt-br: https://steelequivalents.com/pt-br/materiais/gost/10ch13sju.md hi: https://steelequivalents.com/hi/सामग्री/gost/10ch13sju.md content_hash: sha256:8761d0a2ab9308be9f7d9220ff388445a52d98fe339f5f5132b0ab2993007ed1 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/10ch13sju > Canonical URL: https://steelequivalents.com/materials/gost/10ch13sju > 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 · 33 designations # 10Ch13SJu 10Ch13SJu is a designation in GOST for the material held under material number 1.4724, also listed as X10CrAl13. It is a material in the category Heat resistant steels. We list 33 designations recorded for this grade, in the standards DIN / EN, AISI / SAE, ASTM, BS, AFNOR, UNE, JIS, GB, GOST, UNI, ČSN, STN, SRPS, PN, MSZ and BDS. - [*Material no.* **1.4724**](/materials/material-no/1.4724 "Material no.: 1.4724") - [*Category* **Heat resistant steels · 64 grades**](/categories/heat-resistant-steels "Category: Heat resistant steels · 64 grades") - *Designations* **33** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=0bea1ce0-bb02-44b4-9b65-20060bfb4c5a&designation=a9d8f821-3fd2-4a34-ae71-e457f6cf2f1e "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/gost/10ch13sju.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [DIN / EN X10CrAlSi13 This grade’s own name](/materials/din-en/x10cralsi13 "DIN / EN X10CrAlSi13") ## 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 33 designations · 16 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 · 4 - [1.4724 Indicative](/materials/material-no/1.4724 "DIN / EN 1.4724") - [X10CrA113 Indicative](/materials/din-en/x10cra113 "DIN / EN X10CrA113") - [X10CrAl13 This grade’s own name Withdrawn](/materials/din-en/x10cral13 "DIN / EN X10CrAl13") - [X10CrAlSi13 This grade’s own name](/materials/din-en/x10cralsi13 "DIN / EN X10CrAlSi13") AISI / SAE United States · 3 - [405 Indicative](/materials/aisi-sae/405 "AISI / SAE 405") - [MT405 Indicative](/materials/aisi-sae/mt405 "AISI / SAE MT405") - [S40500 Indicative](/materials/uns/s40500 "AISI / SAE S40500") ASTM United States · 1 - [A 268 TP405 Indicative](/materials/astm/a-268-tp405 "ASTM A 268 TP405") BS United Kingdom · 2 - [403S17 Indicative](/materials/bs/403s17 "BS 403S17") - [X10CrAlSi13 Indicative](/materials/din-en/x10cralsi13 "BS X10CrAlSi13") AFNOR France · 2 - [Z10C13 Indicative](/materials/afnor/z10c13 "AFNOR Z10C13") - [Z13C13 Indicative](/materials/afnor/z13c13 "AFNOR Z13C13") UNE Spain · 5 - [F.13152-X 10 CrAI13 Indicative](/materials/une/f-13152-x-10-crai13 "UNE F.13152-X 10 CrAI13") - [F.311 Indicative](/materials/une/f-311 "UNE F.311") - [F.3152 Indicative](/materials/une/f-3152 "UNE F.3152") - [X10CrAl13 Indicative](/materials/din-en/x10cral13 "UNE X10CrAl13") - [X10CrAlSi13 Indicative](/materials/din-en/x10cralsi13 "UNE X10CrAlSi13") JIS Japan · 1 - [SUS405 Indicative](/materials/jis/sus405 "JIS SUS405") GB China · 1 - [OCr13Al Indicative](/materials/gb/ocr13al "GB OCr13Al") GOST Russia / CIS · 6 - **10Ch13SJu Indicative** - [10KH13SYU Indicative](/materials/gost/10kh13syu "GOST 10KH13SYU") - [10Х13СЮ Indicative](/materials/gost/10kh13syu "GOST 10Х13СЮ") - [1Х12СЮ Indicative](/materials/gost/1kh12syu "GOST 1Х12СЮ") - [ст.10Х13СЮ Indicative](/materials/gost/st-10kh13syu "GOST ст.10Х13СЮ") - [ЭИ404 Indicative](/materials/gost/ei404 "GOST ЭИ404") UNI Italy · 2 - [X10CrA112 Indicative](/materials/uni/x10cra112 "UNI X10CrA112") - [X10CrAl12 Indicative](/materials/uni/x10cral12 "UNI X10CrAl12") ČSN Czechia · 1 - [17125 Indicative](/materials/csn/17125 "ČSN 17125") STN Slovakia · 1 - [17 125 Indicative](/materials/csn/17125 "STN 17 125") SRPS Serbia · 1 - [Č.4972 Indicative](/materials/srps/c-4972 "SRPS Č.4972") PN Poland · 1 - [H13JS Indicative](/materials/pn/h13js "PN H13JS") MSZ Hungary · 1 - [H12 Indicative](/materials/aisi-sae/h12 "MSZ H12") BDS Bulgaria · 1 - [Ch13SJu Indicative](/materials/bds/ch13sju "BDS Ch13SJu") 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 Si Mn Iron — the balance, never listed by a standard — 83.8 % Cr — 13 % Si — 1 % Mn — 1 % Traces & impurities · 1.1 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | ≤ 0.12 | | Si | 0.7–1.4 | | Mn | ≤ 1 | | P | 0.04 | | S | 0.015 | | Cr | 12–14 | | Al | 0.7–1.2 | 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 | 0,70-1,20 | 0.700 | 1.200 | Range | | Si | 0,70-1,40 | 0.700 | 1.400 | Range | | P | 0,04 | 0.040 | 0.040 | Exact | | S | 0,015 | 0.015 | 0.015 | Exact | | Cr | 12,0-14,0 | 12.000 | 14.000 | 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 | 490 | 345 | 15 | 60 | 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. ## Similar grades — and why Selection rule, stated so you can disagree with it: same number class 1.4, a shared category, and a published range for Cr / Si that overlaps this grade’s. These are neighbours in composition space — they are not equivalents, and none is claimed to be interchangeable with this grade. [X2CrTi12 1.4720 Cr 10,5-12,5 · Si ≤1,00 - ΔCr 1.50 - ΔSi 0.55 - 12 designations](/materials/din-en/x2crti12 "X2CrTi12") ## 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=0bea1ce0-bb02-44b4-9b65-20060bfb4c5a&designation=a9d8f821-3fd2-4a34-ae71-e457f6cf2f1e "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/gost/10ch13sju.pdf "Datasheet as PDF")