--- title: "410F21 — Stainless steels" description: "410F21 in AFNOR: material number 1.4028, also listed as X30Cr13. It is a material in the category Stainless steels. Designations recorded for this grade: 67." canonical: https://steelequivalents.com/materials/afnor/410f21 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/afnor/410f21.md cs: https://steelequivalents.com/cs/materiály/afnor/410f21.md de: https://steelequivalents.com/de/werkstoffe/afnor/410f21.md es: https://steelequivalents.com/es/materiales/afnor/410f21.md fr: https://steelequivalents.com/fr/matériaux/afnor/410f21.md hu: https://steelequivalents.com/hu/anyagok/afnor/410f21.md it: https://steelequivalents.com/it/materiali/afnor/410f21.md nl: https://steelequivalents.com/nl/materialen/afnor/410f21.md pl: https://steelequivalents.com/pl/materiały/afnor/410f21.md pt: https://steelequivalents.com/pt/materiais/afnor/410f21.md ru: https://steelequivalents.com/ru/материалы/afnor/410f21.md tr: https://steelequivalents.com/tr/malzemeler/afnor/410f21.md zh: https://steelequivalents.com/zh/材料/afnor/410f21.md ja: https://steelequivalents.com/ja/材料/afnor/410f21.md ar: https://steelequivalents.com/ar/المواد/afnor/410f21.md ko: https://steelequivalents.com/ko/재료/afnor/410f21.md pt-br: https://steelequivalents.com/pt-br/materiais/afnor/410f21.md hi: https://steelequivalents.com/hi/सामग्री/afnor/410f21.md content_hash: sha256:307eea70a87ac0adf8b05168994a83b63f2b5ba465c0c8525c2250c22a45e81b 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/afnor/410f21 > Canonical URL: https://steelequivalents.com/materials/afnor/410f21 > 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. AFNOR · France · 67 designations # 410F21 410F21 is a designation in AFNOR for the material held under material number 1.4028, also listed as X30Cr13. It is a material in the category Stainless steels. We list 67 designations recorded for this grade, in the standards DIN / EN, UNS, AISI / SAE, ASTM, BS, AFNOR, UNE, SAE AMS, JIS, GB, GOST, UNI, SS, ČSN, STN, PN, ABNT NBR, SRPS and JUS. - [*Material no.* **1.4028**](/materials/material-no/1.4028 "Material no.: 1.4028") - [*Category* **Stainless steels · 468 grades**](/categories/stainless-steels "Category: Stainless steels · 468 grades") - *Designations* **67** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=6f1acb39-55c9-4fd1-8f3c-069a2e8bf1c0&designation=edfdda80-7e57-4ab4-9e0a-d3ab8848a182 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/afnor/410f21.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [DIN / EN X30Cr13 This grade’s own name](/materials/is/x30cr13 "DIN / EN X30Cr13") - [JIS 420J2 This grade’s own name](/materials/jis/420j2 "JIS 420J2") ## 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 67 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 · 1 - [X30Cr13 This grade’s own name](/materials/is/x30cr13 "DIN / EN X30Cr13") UNS United States · 2 - [S42000 Indicative](/materials/uns/s42000 "UNS S42000") - [S42020 Indicative](/materials/uns/s42020 "UNS S42020") AISI / SAE United States · 6 - [420 Indicative](/materials/is/420 "AISI / SAE 420") - [420F Indicative](/materials/aisi-sae/420f "AISI / SAE 420F") - [51420 Indicative](/materials/aisi-sae/51420 "AISI / SAE 51420") - [51420F Indicative](/materials/aisi-sae/51420f "AISI / SAE 51420F") - [S42000 Indicative](/materials/uns/s42000 "AISI / SAE S42000") - [S42020 Indicative](/materials/uns/s42020 "AISI / SAE S42020") ASTM United States · 15 - [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") - [A484 Indicative](/materials/astm/a484 "ASTM A484") - [A580 Indicative](/materials/astm/a580 "ASTM A580") - [A582 Indicative](/materials/astm/a582 "ASTM A582") - [A895 Indicative](/materials/astm/a895 "ASTM A895") - [F1079 Indicative](/materials/astm/f1079 "ASTM F1079") - [F116 Indicative](/materials/astm/f116 "ASTM F116") - [F1613 Indicative](/materials/astm/f1613 "ASTM F1613") - [F2215 Indicative](/materials/astm/f2215 "ASTM F2215") - [F899 Indicative](/materials/astm/f899 "ASTM F899") BS United Kingdom · 5 - [420 S 45 Indicative](/materials/bs/420s45 "BS 420 S 45") - [420 S 45 En56D Indicative](/materials/bs/420-s-45-en56d "BS 420 S 45 En56D") - [420S37 Indicative](/materials/bs/420s37 "BS 420S37") - [En 56 C Indicative](/materials/bs/en56c "BS En 56 C") - [En56D Indicative](/materials/bs/en56d "BS En56D") AFNOR France · 6 - **410F21 Indicative** - [Z20C13 Indicative](/materials/afnor/z20c13 "AFNOR Z20C13") - [Z20Cr13 Indicative](/materials/afnor/z20cr13 "AFNOR Z20Cr13") - [Z30C13 Indicative](/materials/afnor/z30c13 "AFNOR Z30C13") - [Z30Cr13 Indicative](/materials/afnor/z30cr13 "AFNOR Z30Cr13") - [Z33C13 Indicative](/materials/afnor/z33c13 "AFNOR Z33C13") UNE Spain · 3 - [F.3403 Indicative](/materials/une/f-3403 "UNE F.3403") - [F.3403-X30Cr 13 Indicative](/materials/une/f-3403-x30cr-13 "UNE F.3403-X30Cr 13") - [X30Cr13 Indicative](/materials/is/x30cr13 "UNE X30Cr13") SAE AMS United States / Aerospace · 3 - [5506 Indicative](/materials/ams/5506 "SAE AMS 5506") - [5620 Indicative bar](/materials/ams/5620 "SAE AMS 5620") - [5621 Indicative](/materials/ams/5621 "SAE AMS 5621") JIS Japan · 6 - [420J2 This grade’s own name](/materials/jis/420j2 "JIS 420J2") - [SUS 420F Indicative](/materials/jis/sus420f "JIS SUS 420F") - [SUS 420J2 Indicative](/materials/jis/sus420j2 "JIS SUS 420J2") - [SUS 420J2-CSP Indicative](/materials/jis/sus420j2-csp "JIS SUS 420J2-CSP") - [SUS 420J2FB Indicative](/materials/jis/sus420j2fb "JIS SUS 420J2FB") - [SUS 420J2TKA Indicative](/materials/jis/sus420j2tka "JIS SUS 420J2TKA") GB China · 2 - [3Cr13 Indicative](/materials/gb/3cr13 "GB 3Cr13") - [Y3Cr13 Indicative](/materials/gb/y3cr13 "GB Y3Cr13") GOST Russia / CIS · 6 - [30Ch13 Indicative](/materials/gost/30ch13 "GOST 30Ch13") - [30KH13 Indicative](/materials/gost/30kh13 "GOST 30KH13") - [30X13 Indicative](/materials/gost/30x13 "GOST 30X13") - [30Х13 Indicative](/materials/gost/30kh13 "GOST 30Х13") - [3Х13 Indicative](/materials/gost/3kh13 "GOST 3Х13") - [ст.30Х13 Indicative](/materials/gost/st-30kh13 "GOST ст.30Х13") UNI Italy · 2 - [GX30Cr13 Indicative](/materials/uni/gx30cr13 "UNI GX30Cr13") - [X30Cr13 Indicative](/materials/is/x30cr13 "UNI X30Cr13") SS Sweden · 3 - [2304 Indicative](/materials/ss/2304 "SS 2304") - [2304-03 Indicative](/materials/ss/2304-03 "SS 2304-03") - [SIS 2304 Indicative](/materials/ss/sis-2304 "SS SIS 2304") ČSN Czechia · 1 - [17023 Indicative](/materials/csn/17023 "ČSN 17023") STN Slovakia · 1 - [17 023 Indicative](/materials/csn/17023 "STN 17 023") PN Poland · 2 - [3H13 Indicative](/materials/pn/3h13 "PN 3H13") - [3H14 Indicative](/materials/pn/3h14 "PN 3H14") ABNT NBR Brazil · 1 - [420 Indicative](/materials/is/420 "ABNT NBR 420") SRPS Serbia · 1 - [Č.4173 Indicative](/materials/srps/c-4173 "SRPS Č.4173") JUS former Yugoslavia · 1 - [Č.4173 Indicative](/materials/srps/c-4173 "JUS Č.4173") 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 Mn Si Iron — the balance, never listed by a standard — 84.1 % Cr — 13 % Mn — 1.5 % Si — 1 % Traces & impurities · 0.4 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | 0.26–0.35 | | Si | ≤ 1 | | Mn | ≤ 1.5 | | P | 0.04 | | S | 0.015 | | Cr | 12–14 | 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 | 0,26-0,35 | 0.260 | 0.350 | Range | | Si | ≤1,00 | — | 1.000 | Max | | P | 0,04 | 0.040 | 0.040 | Exact | | S | 0,015 | 0.015 | 0.015 | Exact | | Cr | 12,0-14,0 | 12.000 | 14.000 | Range | | Mn | ≤1,50 | — | 1.500 | 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 810 °C Exact Transformation point Ac3 860 °C Exact · Ac3(Acm) Transformation point Ar3 660 °C Exact · Ar3(Arcm) Transformation point Ar1 710 °C Exact Weldability not suitable for welding As published: is not used. Flake sensitivity not susceptible As published: not predisposed Temper brittleness slightly susceptible As published: weakly predisposed 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 7 conditions · 78 values By delivery state**no delivery state stated** source `steeljis` | Delivery state | Rm N/mm² | Re N/mm² | A% | Z% | aK J/cm² | HB | HRC | HRB | HV | |---|---|---|---|---|---|---|---|---|---| | Plate/Sheet Hot-rolled | 540 | 225 | 18 | — | — | — | — | — | — | | Bars/Rods | 740 | 540 | 12 | 40 | 29 | — | — | — | — | | Hot-rolled | — | — | — | — | — | 235 | — | 99 | 247 | | Quenched and tempered | — | — | — | — | — | — | 40 | — | — | By delivery state**no delivery state stated** source `splav` | Delivery state | Rm N/mm² | A5% | HB | |---|---|---|---| | Bar, GOST 18907-73 | 530 – 780 | 12 | — | | Wire, GOST 18143-72 | 590 – 830 | 12 – 16 | — | | 30KH13 ( 30Х13 ) (quenching, tempering) , GOST 25054-81 | — | — | 235 – 277 | | 30KH13 ( 30Х13 ) (annealing) , Bar GOST 5949-75 | — | — | 131 – 207 | By delivery state**Soft annealed** source `steelnumber` | Delivery state | HB | HV | |---|---|---| | Soft annealed | 245 | 190 – 240 | By delivery state**Quenched and tempered** source `steelnumber` | Delivery state | HV | |---|---| | Quenched and tempered | 500 – 540 | By dimension**Drawing 740 - 800°C** source `splav` | Dimension mm | Rm N/mm² | A5% | |---|---|---| | 1 - 4 | 540 | 17 | By dimension**Quenching and drawing** source `splav` | Dimension mm | Rm N/mm² | Re N/mm² | A5% | Z% | KCU kJ/m² | |---|---|---|---|---|---| | to 600 | 735 | 588 | 10 – 12 | 35 – 40 | 290 – 390 | 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 | 7.67 | 223 | — | — | — | 522 | | 100 | 7.65 | — | 9.98 | 26.4 | 473 | 595 | | 200 | 7.62 | 214 | 10.65 | 27.2 | 502 | 684 | | 300 | 7.6 | 206 | 11.13 | 27.7 | 540 | 769 | | 400 | 7.57 | 197 | 11.7 | 27.7 | 582 | 858 | | 500 | 7.54 | 185 | 11.83 | 27.2 | 653 | 935 | | 600 | 7.51 | 174 | 12.3 | 26.7 | 749 | 1015 | | 700 | 7.48 | — | 12.5 | 25.6 | 879 | 1099 | | 800 | 7.45 | — | 12.6 | 25.1 | 783 | — | | 900 | 7.46 | — | — | 26.7 | 657 | — | 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. ## Heat treatment Supply condition - Annealing or Tempering Steel bar - Quenching and Solution annealing and Tempering and Ageing 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/azhlNWIxMzAzNzU_ "Source: www.caishuku.com") ## 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 / Mn 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. [1.4005 1.4005 Cr 12,0-14,0 · Mn ≤1,50 - ΔCr 0.00 - ΔMn 0.00 - 46 designations](/materials/material-no/1.4005 "1.4005")[1.4313 1.4313 Cr 12,0-14,0 · Mn ≤1,50 - ΔCr 0.00 - ΔMn 0.00 - 22 designations](/materials/material-no/1.4313 "1.4313")[1.4000 1.4000 Cr 12,0-14,0 · Mn ≤1,00 - ΔCr 0.00 - ΔMn 0.25 - 54 designations](/materials/material-no/1.4000 "1.4000")[X6CrAl13 1.4002 Cr 12,0-14,0 · Mn ≤1,00 - ΔCr 0.00 - ΔMn 0.25 - 28 designations](/materials/din-en/x6cral13 "X6CrAl13")[1.4021 1.4021 Cr 12,0-14,0 · Mn ≤1,00 - ΔCr 0.00 - ΔMn 0.25 - 56 designations](/materials/material-no/1.4021 "1.4021")[X15Cr13 1.4024 Cr 12,0-14,0 · Mn ≤1,00 - ΔCr 0.00 - ΔMn 0.25 - 64 designations](/materials/din-en/x15cr13 "X15Cr13") ## 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=6f1acb39-55c9-4fd1-8f3c-069a2e8bf1c0&designation=edfdda80-7e57-4ab4-9e0a-d3ab8848a182 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/afnor/410f21.pdf "Datasheet as PDF")