--- title: "Č.41731 — Stainless steels" description: "Č.41731 in JUS: material number 1.4031, also listed as X38Cr13. It is a material in the category Stainless steels. Designations recorded for this grade: 56." canonical: https://steelequivalents.com/materials/jus/c-41731 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/jus/c-41731.md cs: https://steelequivalents.com/cs/materiály/jus/c-41731.md de: https://steelequivalents.com/de/werkstoffe/jus/c-41731.md es: https://steelequivalents.com/es/materiales/jus/c-41731.md fr: https://steelequivalents.com/fr/matériaux/jus/c-41731.md hu: https://steelequivalents.com/hu/anyagok/jus/c-41731.md it: https://steelequivalents.com/it/materiali/jus/c-41731.md nl: https://steelequivalents.com/nl/materialen/jus/c-41731.md pl: https://steelequivalents.com/pl/materiały/jus/c-41731.md pt: https://steelequivalents.com/pt/materiais/jus/c-41731.md ru: https://steelequivalents.com/ru/материалы/jus/c-41731.md tr: https://steelequivalents.com/tr/malzemeler/jus/c-41731.md zh: https://steelequivalents.com/zh/材料/jus/c-41731.md ja: https://steelequivalents.com/ja/材料/jus/c-41731.md ar: https://steelequivalents.com/ar/المواد/jus/c-41731.md ko: https://steelequivalents.com/ko/재료/jus/c-41731.md pt-br: https://steelequivalents.com/pt-br/materiais/jus/c-41731.md hi: https://steelequivalents.com/hi/सामग्री/jus/c-41731.md content_hash: sha256:806265fb627d37909757439b640a81b64db3a338671f99b8a7b089223412c172 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/jus/c-41731 > Canonical URL: https://steelequivalents.com/materials/jus/c-41731 > 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. JUS · former Yugoslavia · 56 designations # Č.41731 Č.41731 is a designation in JUS for the material held under material number 1.4031, also listed as X38Cr13. It is a material in the category Stainless steels. We list 56 designations recorded for this grade, in the standards DIN / EN, UNS, AISI / SAE, ASTM, BS, AFNOR, UNE, ISO, SAE AMS, JIS, GB, GOST, UNI, SS, ČSN, STN, ABNT NBR, PN and JUS. - [*Material no.* **1.4031**](/materials/material-no/1.4031 "Material no.: 1.4031") - [*Category* **Stainless steels · 468 grades**](/categories/stainless-steels "Category: Stainless steels · 468 grades") - *Designations* **56** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=2ac89ab2-fd1f-4c7a-8375-efaf45a3ca62&designation=b00c5712-9f81-4052-9466-efecbd28554c "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/jus/c-41731.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [DIN / EN X39Cr13 This grade’s own name](/materials/din-en/x39cr13 "DIN / EN X39Cr13") - [UNS S42080 This grade’s own name · 4 grades on that route](/materials/uns/s42080 "UNS S42080") ## About Stainless steels Stainless steels are corrosion-resistant alloy steels whose chromium content promotes a protective passive surface film. They are used for equipment, structures and components exposed to moisture, chemicals or hygienic service, with different alloy compositions selected for corrosion resistance, strength, formability or weldability. This describes the material class as a whole. Always confirm the individual grade against the standard before ordering. ## Also known as 56 designations · 19 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 - [X38Cr13 This grade’s own name Withdrawn](/materials/din-en/x38cr13 "DIN / EN X38Cr13") - [X39Cr13 This grade’s own name](/materials/din-en/x39cr13 "DIN / EN X39Cr13") UNS United States · 2 - [S42000 Indicative](/materials/uns/s42000 "UNS S42000") - [S42080 This grade’s own name](/materials/uns/s42080 "UNS S42080") AISI / SAE United States · 5 - [420 Indicative](/materials/is/420 "AISI / SAE 420") - [51420 Indicative](/materials/aisi-sae/51420 "AISI / SAE 51420") - [S42000 Indicative](/materials/uns/s42000 "AISI / SAE S42000") - [S42080 Indicative](/materials/uns/s42080 "AISI / SAE S42080") - [Type420 Indicative](/materials/aisi-sae/type420 "AISI / SAE Type420") ASTM United States · 9 - [A1049 Indicative](/materials/astm/a1049 "ASTM A1049") - [A176 Indicative](/materials/astm/a176 "ASTM A176") - [A182 Indicative](/materials/aisi-sae/a182 "ASTM A182") - [A276 Indicative](/materials/astm/a276 "ASTM A276") - [A314 Indicative](/materials/astm/a314 "ASTM A314") - [A473 Indicative](/materials/astm/a473 "ASTM A473") - [A580 Indicative](/materials/astm/a580 "ASTM A580") - [F1079 Indicative](/materials/astm/f1079 "ASTM F1079") - [F2215 Indicative](/materials/astm/f2215 "ASTM F2215") BS United Kingdom · 2 - [420S45 Indicative](/materials/bs/420s45 "BS 420S45") - [X39Cr13 Indicative](/materials/din-en/x39cr13 "BS X39Cr13") AFNOR France · 8 - [X40Cr14 Indicative](/materials/din-en/x40cr14 "AFNOR X40Cr14") - [Z33C13 Indicative](/materials/afnor/z33c13 "AFNOR Z33C13") - [Z38C13M Indicative](/materials/afnor/z38c13m "AFNOR Z38C13M") - [Z40C13 Indicative](/materials/afnor/z40c13 "AFNOR Z40C13") - [Z40C14 Indicative](/materials/afnor/z40c14 "AFNOR Z40C14") - [Z40Cr14 Indicative](/materials/afnor/z40cr14 "AFNOR Z40Cr14") - [Z44C14 Indicative](/materials/afnor/z44c14 "AFNOR Z44C14") - [Z50C14 Indicative](/materials/afnor/z50c14 "AFNOR Z50C14") UNE Spain · 5 - [F.3404 Indicative](/materials/une/f-3404 "UNE F.3404") - [F.3404-X40Cr 13 Indicative](/materials/une/f-3404-x40cr-13 "UNE F.3404-X40Cr 13") - [F.3405 Indicative](/materials/une/f-3405 "UNE F.3405") - [X40Cr13 Indicative](/materials/is/x40cr13 "UNE X40Cr13") - [X45Cr13 Indicative](/materials/din-en/x45cr13 "UNE X45Cr13") ISO International · 1 - [X40Cr14 Indicative](/materials/din-en/x40cr14 "ISO X40Cr14") SAE AMS United States / Aerospace · 2 - [5506 Indicative](/materials/ams/5506 "SAE AMS 5506") - [5621 Indicative](/materials/ams/5621 "SAE AMS 5621") JIS Japan · 1 - [SUS 420J2 Indicative](/materials/jis/sus420j2 "JIS SUS 420J2") GB China · 1 - [4C13 Indicative](/materials/gb/4c13 "GB 4C13") GOST Russia / CIS · 5 - [40Ch13 Indicative](/materials/gost/40ch13 "GOST 40Ch13") - [40KH13 Indicative](/materials/gost/40kh13 "GOST 40KH13") - [40Х13 Indicative](/materials/gost/40kh13 "GOST 40Х13") - [4Х13 Indicative](/materials/gost/4kh13 "GOST 4Х13") - [ст.40Х13 Indicative](/materials/gost/st-40kh13 "GOST ст.40Х13") UNI Italy · 3 - [X40Cr14 Indicative](/materials/din-en/x40cr14 "UNI X40Cr14") - [X41Cr13KU Indicative](/materials/uni/x41cr13ku "UNI X41Cr13KU") - [X46Cr13 Indicative](/materials/din-en/x46cr13 "UNI X46Cr13") SS Sweden · 3 - [2304 Indicative](/materials/ss/2304 "SS 2304") - [2314 Indicative](/materials/ss/2314 "SS 2314") - [SIS 2304 Indicative](/materials/ss/sis-2304 "SS SIS 2304") ČSN Czechia · 2 - [17024 Indicative](/materials/csn/17024 "ČSN 17024") - [19435 Indicative](/materials/csn/19435 "ČSN 19435") STN Slovakia · 1 - [17 024 Indicative](/materials/csn/17024 "STN 17 024") ABNT NBR Brazil · 1 - [420 Indicative](/materials/is/420 "ABNT NBR 420") PN Poland · 2 - [4H13 Indicative](/materials/pn/4h13 "PN 4H13") - [4H14 Indicative](/materials/pn/4h14 "PN 4H14") JUS former Yugoslavia · 1 - **Č.41731 Indicative** 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 Si Mn Iron — the balance, never listed by a standard — 84.1 % Cr — 13.5 % Si — 1 % Mn — 1 % Traces & impurities · 0.4 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | 0.36–0.42 — Unusual | | Si | ≤ 1 | | Mn | ≤ 1 | | P | 0.04 | | S | 0.015 | | Cr | 12.5–14.5 | 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 | 0,36-0,42 | 0.360 | 0.420 | Range | | Si | ≤1,00 | — | 1.000 | Max | | P | 0,04 | 0.040 | 0.040 | Exact | | S | 0,015 | 0.015 | 0.015 | Exact | | Cr | 12,5-14,5 | 12.500 | 14.500 | 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 Transformation point Ac1 800 °C Exact Transformation point Ar1 780 °C Exact Weldability not suitable for welding As published: is not used. 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 5 conditions · 66 values By delivery state**no delivery state stated** source `splav` | Delivery state | Rm N/mm² | A5% | HB | |---|---|---|---| | Bar, GOST 18907-73 | 590 – 810 | 10 | — | | Wire, GOST 18143-72 | 640 – 880 | 10 – 14 | — | | 40KH13 ( 40Х13 ) (quenching, tempering) | — | — | 460 – 550 | | 40KH13 ( 40Х13 ) (annealing) , Bar GOST 5949-75 | — | — | 143 – 229 | By delivery state**Soft annealed** source `steelnumber` | Delivery state | HV | |---|---| | Soft annealed | 200 – 250 | By delivery state**Quenched and tempered** source `steelnumber` | Delivery state | HV | |---|---| | Quenched and tempered | 520 – 560 | By heat-treated condition**no delivery state stated** source `splav` | Heat-treated condition | Rm N/mm² | A5% | |---|---|---| | Sheet, GOST 5582-75 | 550 | 15 | At temperature**no delivery state stated** source `splav` | Temperature °C | Density g/cm³ | Elastic modulus GPa | Thermal expansion coefficient 10^-6/K | Thermal conductivity W/(m·K) | Specific heat capacity J/(kg·K) | Electrical resistivity nΩ·m | |---|---|---|---|---|---|---| | 20 | 7.65 | 218 | — | 25 | 461 | 590 | | 100 | 7.63 | 214 | 10.8 | 26 | 482 | 650 | | 200 | 7.6 | 206 | 11.9 | 27.2 | 523 | 710 | | 300 | 7.57 | 198 | 12.3 | 28.3 | 565 | 790 | | 400 | 7.54 | 188 | 13 | 29.1 | 607 | 860 | | 500 | 7.51 | 176 | 13.6 | 29.1 | 674 | 940 | | 600 | 7.48 | 163 | 13.5 | 29.1 | 775 | 1000 | | 700 | 7.45 | 148 | 13.8 | 28.3 | 988 | 1120 | | 800 | 7.42 | 140 | 14.6 | 27.9 | 825 | 1180 | | 900 | — | — | — | 28.5 | 691 | 1160 | 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. [1.4034 1.4034 Cr 12,5-14,5 · Si ≤1,00 - ΔCr 0.00 - ΔSi 0.00 - 46 designations](/materials/material-no/1.4034 "1.4034")[X65Cr13 1.4037 Cr 12,5-14,5 · Si ≤1,00 - ΔCr 0.00 - ΔSi 0.00 - 1 designations](/materials/din-en/x65cr13 "X65Cr13")[X52Cr13 1.4038 Cr 12,5-14,5 · Si ≤1,00 - ΔCr 0.00 - ΔSi 0.00 - 16 designations](/materials/din-en/x52cr13 "X52Cr13")[1.4000 1.4000 Cr 12,0-14,0 · Si ≤1,00 - ΔCr 0.50 - ΔSi 0.00 - 54 designations](/materials/material-no/1.4000 "1.4000")[1.4001 1.4001 Cr 13,0-15,0 · Si ≤1,00 - ΔCr 0.50 - ΔSi 0.00 - 29 designations](/materials/material-no/1.4001 "1.4001")[X6CrAl13 1.4002 Cr 12,0-14,0 · Si ≤1,00 - ΔCr 0.50 - ΔSi 0.00 - 28 designations](/materials/din-en/x6cral13 "X6CrAl13") ## 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=2ac89ab2-fd1f-4c7a-8375-efaf45a3ca62&designation=b00c5712-9f81-4052-9466-efecbd28554c "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/jus/c-41731.pdf "Datasheet as PDF")