--- title: "A414(F) — Heat-resistant structural steels" description: "A414(F) in AISI / SAE: material number 1.0481, also listed as 17Mn4. Category: Heat-resistant structural steels. Designations recorded for this grade: 83." canonical: https://steelequivalents.com/materials/aisi-sae/a414-f language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/aisi-sae/a414-f.md cs: https://steelequivalents.com/cs/materiály/aisi-sae/a414-f.md de: https://steelequivalents.com/de/werkstoffe/aisi-sae/a414-f.md es: https://steelequivalents.com/es/materiales/aisi-sae/a414-f.md fr: https://steelequivalents.com/fr/matériaux/aisi-sae/a414-f.md hu: https://steelequivalents.com/hu/anyagok/aisi-sae/a414-f.md it: https://steelequivalents.com/it/materiali/aisi-sae/a414-f.md nl: https://steelequivalents.com/nl/materialen/aisi-sae/a414-f.md pl: https://steelequivalents.com/pl/materiały/aisi-sae/a414-f.md pt: https://steelequivalents.com/pt/materiais/aisi-sae/a414-f.md ru: https://steelequivalents.com/ru/материалы/aisi-sae/a414-f.md tr: https://steelequivalents.com/tr/malzemeler/aisi-sae/a414-f.md zh: https://steelequivalents.com/zh/材料/aisi-sae/a414-f.md ja: https://steelequivalents.com/ja/材料/aisi-sae/a414-f.md ar: https://steelequivalents.com/ar/المواد/aisi-sae/a414-f.md ko: https://steelequivalents.com/ko/재료/aisi-sae/a414-f.md pt-br: https://steelequivalents.com/pt-br/materiais/aisi-sae/a414-f.md hi: https://steelequivalents.com/hi/सामग्री/aisi-sae/a414-f.md content_hash: sha256:fc6d92e7bd62a2f8977cc2d5ac2d685a7101a159ccc7be0d2593e9e3c8a964e7 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/aisi-sae/a414-f > Canonical URL: https://steelequivalents.com/materials/aisi-sae/a414-f > 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. AISI / SAE · United States · 83 designations # A414(F) A414(F) is a designation in AISI / SAE for the material held under material number 1.0481, also listed as 17Mn4. It is a material in the category Heat-resistant structural steels. We list 83 designations recorded for this grade, in the standards DIN / EN, UNS, AISI / SAE, ASTM, BS, AFNOR, UNE, ISO, JIS, GOST, UNI, SS, ČSN, STN, MSZ, STAS, BDS and ÖNORM. - [*Material no.* **1.0481**](/materials/material-no/1.0481 "Material no.: 1.0481") - [*Category* **Heat-resistant structural steels · 62 grades**](/categories/heat-resistant-structural-steels "Category: Heat-resistant structural steels · 62 grades") - *Designations* **83** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=bd6493c7-b81d-4eb6-970c-5fd3add15ab2&designation=f9979fa3-460c-4570-84b7-b385a56e17a0 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/aisi-sae/a414-f.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [DIN / EN 17Mn4 This grade’s own name · 2 grades on that route](/materials/din-en/17mn4 "DIN / EN 17Mn4") - [UNS K02203 This grade’s own name · 7 grades on that route](/materials/uns/k02203 "UNS K02203") - [ASTM A515 Grade 70 This grade’s own name](/materials/din-en/a515-grade-70 "ASTM A515 Grade 70") ## About Heat-resistant structural steels Heat-resistant structural steels are structural steels designed to retain useful strength and dimensional stability at elevated temperatures. They are used for load-bearing components in hot-service equipment where mechanical performance must be maintained during heating. This describes the material class as a whole. Always confirm the individual grade against the standard before ordering. ## Also known as 83 designations · 18 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 · 5 - [1.0436 Indicative](/materials/material-no/1.0436 "DIN / EN 1.0436") - [17Mn4 This grade’s own name](/materials/din-en/17mn4 "DIN / EN 17Mn4") - [ASt45 Indicative](/materials/din-en/ast45 "DIN / EN ASt45") - [P295GH This grade’s own name](/materials/din-en/p295gh "DIN / EN P295GH") - [X46 Indicative](/materials/aisi-sae/x46 "DIN / EN X46") UNS United States · 5 - [K02203 This grade’s own name](/materials/uns/k02203 "UNS K02203") - [K02704 This grade’s own name](/materials/uns/k02704 "UNS K02704") - [K03101 This grade’s own name](/materials/uns/k03101 "UNS K03101") - [K03102 This grade’s own name](/materials/uns/k03102 "UNS K03102") - [K03501 This grade’s own name](/materials/uns/k03501 "UNS K03501") AISI / SAE United States · 16 - [1022 Indicative](/materials/aisi-sae/1022 "AISI / SAE 1022") - **A414(F) Indicative** - [A414(G) Indicative](/materials/aisi-sae/a414-g "AISI / SAE A414(G)") - [A515(70) Indicative](/materials/aisi-sae/a515-70 "AISI / SAE A515(70)") - [A516(70) Indicative](/materials/aisi-sae/a516-70 "AISI / SAE A516(70)") - [A516Gr.65 Indicative](/materials/aisi-sae/a516gr-65 "AISI / SAE A516Gr.65") - [Gr.B Indicative](/materials/aisi-sae/gr-b "AISI / SAE Gr.B") - [Gr.C Indicative](/materials/aisi-sae/gr-c "AISI / SAE Gr.C") - [K02203 Indicative](/materials/uns/k02203 "AISI / SAE K02203") - [K02403 Indicative](/materials/uns/k02403 "AISI / SAE K02403") - [K02700 Indicative](/materials/uns/k02700 "AISI / SAE K02700") - [K02704 Indicative](/materials/uns/k02704 "AISI / SAE K02704") - [K03101 Indicative](/materials/uns/k03101 "AISI / SAE K03101") - [K03102 Indicative](/materials/uns/k03102 "AISI / SAE K03102") - [K03103 Indicative](/materials/uns/k03103 "AISI / SAE K03103") - [X46 Indicative](/materials/aisi-sae/x46 "AISI / SAE X46") ASTM United States · 4 - [A414 Gr F Indicative](/materials/astm/a414-gr-f "ASTM A414 Gr F") - [A515 Grade 70 This grade’s own name](/materials/din-en/a515-grade-70 "ASTM A515 Grade 70") - [A516 Grade70 This grade’s own name](/materials/din-en/a516-grade70 "ASTM A516 Grade70") - [A516(70) Indicative](/materials/aisi-sae/a516-70 "ASTM A516(70)") BS United Kingdom · 7 - [224-430 Indicative](/materials/bs/224-430 "BS 224-430") - [224-460B Indicative](/materials/bs/224-460b "BS 224-460B") - [224Gr.460 Indicative](/materials/bs/224gr-460 "BS 224Gr.460") - [224Gr.490 Indicative](/materials/bs/224gr-490 "BS 224Gr.490") - [430LT Indicative](/materials/bs/430lt "BS 430LT") - [440 Indicative](/materials/bs/440 "BS 440") - [P295GH Indicative](/materials/din-en/p295gh "BS P295GH") AFNOR France · 5 - [A 48CP Indicative](/materials/afnor/a48cp "AFNOR A 48CP") - [A48AP Indicative](/materials/afnor/a48ap "AFNOR A48AP") - [A48FP Indicative](/materials/afnor/a48fp "AFNOR A48FP") - [AP Indicative](/materials/afnor/ap "AFNOR AP") - [P295GH Indicative](/materials/din-en/p295gh "AFNOR P295GH") UNE Spain · 3 - [A 47 RC1 Indicative](/materials/une/a-47-rc1 "UNE A 47 RC1") - [A47RCI Indicative](/materials/une/a47rci "UNE A47RCI") - [RAII Indicative](/materials/une/raii "UNE RAII") ISO International · 2 - [P11 Indicative](/materials/iso/p11 "ISO P11") - [P290 Indicative](/materials/iso/p290 "ISO P290") JIS Japan · 8 - [SB46 Indicative](/materials/jis/sb46 "JIS SB46") - [SB49 Indicative](/materials/jis/sb49 "JIS SB49") - [SG365 Indicative](/materials/jis/sg365 "JIS SG365") - [SGV410 Indicative](/materials/jis/sgv410 "JIS SGV410") - [SGV450 Indicative](/materials/jis/sgv450 "JIS SGV450") - [SGV480 Indicative](/materials/jis/sgv480 "JIS SGV480") - [SPV315 Indicative](/materials/jis/spv315 "JIS SPV315") - [SPV32 Indicative](/materials/jis/spv32 "JIS SPV32") GOST Russia / CIS · 8 - [14G2 Indicative](/materials/gost/14g2 "GOST 14G2") - [14G2АF Indicative](/materials/gost/14g2af "GOST 14G2АF") - [14G2АFD Indicative](/materials/gost/14g2afd "GOST 14G2АFD") - [14KH2GMR Indicative](/materials/gost/14kh2gmr "GOST 14KH2GMR") - [14KH2GMRL Indicative](/materials/gost/14kh2gmrl "GOST 14KH2GMRL") - [14Г2 Indicative](/materials/gost/14g2 "GOST 14Г2") - [18K Indicative](/materials/bds/18k "GOST 18K") - [ст.14Г2 Indicative](/materials/gost/st-14g2 "GOST ст.14Г2") UNI Italy · 9 - [Fe460-1KG Indicative](/materials/uni/fe460-1kg "UNI Fe460-1KG") - [Fe460-1KW Indicative](/materials/uni/fe460-1kw "UNI Fe460-1KW") - [Fe510-1KG Indicative](/materials/uni/fe510-1kg "UNI Fe510-1KG") - [Fe510-1KT Indicative](/materials/uni/fe510-1kt "UNI Fe510-1KT") - [Fe510-1KW Indicative](/materials/uni/fe510-1kw "UNI Fe510-1KW") - [Fe510-2KG Indicative](/materials/uni/fe510-2kg "UNI Fe510-2KG") - [Fe510-2KT Indicative](/materials/uni/fe510-2kt "UNI Fe510-2KT") - [Fe510-2KW Indicative](/materials/uni/fe510-2kw "UNI Fe510-2KW") - [P295GH Indicative](/materials/din-en/p295gh "UNI P295GH") SS Sweden · 2 - [2102 Indicative](/materials/ss/2102 "SS 2102") - [2103 Indicative](/materials/ss/2103 "SS 2103") ČSN Czechia · 3 - [11478 Indicative](/materials/csn/11478 "ČSN 11478") - [11481 Indicative](/materials/csn/11481 "ČSN 11481") - [13030 Indicative](/materials/csn/13030 "ČSN 13030") STN Slovakia · 1 - [13 030 Indicative](/materials/csn/13030 "STN 13 030") MSZ Hungary · 1 - [P295GH Indicative](/materials/din-en/p295gh "MSZ P295GH") STAS Romania · 1 - [K460 Indicative](/materials/stas/k460 "STAS K460") BDS Bulgaria · 2 - [16GS Indicative](/materials/gost/16gs "BDS 16GS") - [P295GH Indicative](/materials/din-en/p295gh "BDS P295GH") ÖNORM Austria · 1 - [17Mn4KW Indicative](/materials/onorm/17mn4kw "ÖNORM 17Mn4KW") Every designation on file is listed — no truncation, no “+ n more”. Each one is itself a route that leads back here. ## Chemical composition 14 elements on file · weight % What this alloy is Fe Mn Si Cr Iron — the balance, never listed by a standard — 97.1 % Mn — 1.2 % Si — 0.4 % Cr — 0.3 % Traces & impurities · 1 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | 0.08–0.2 | | Si | ≤ 0.4 | | Mn | 0.9–1.5 | | P | 0.025 | | S | 0.01 | | Cr | ≤ 0.3 | | Mo | ≤ 0.08 | | Ni | ≤ 0.3 | | V | ≤ 0.02 | | Cu | ≤ 0.3 | | Al | ≥ 0.02 | | Ti | ≤ 0.03 | | Nb | ≤ 0.02 | | N | 0.012 | Carbon Silicon Manganese Phosphorus Sulfur Chromium Molybdenum Nickel Vanadium Copper Aluminium Titanium Niobium Nitrogen 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 | 0,08-0,20 | 0.080 | 0.200 | Range | | N | 0,012 | 0.012 | 0.012 | Exact | | Al | ≥0,020 | 0.020 | — | Min | | Si | ≤0,40 | — | 0.400 | Max | | P | 0,025 | 0.025 | 0.025 | Exact | | S | 0,01 | 0.010 | 0.010 | Exact | | Ti | ≤0,03 | — | 0.030 | Max | | V | ≤0,02 | — | 0.020 | Max | | Cr | ≤0,30 | — | 0.300 | Max | | Mn | 0,90-1,50 | 0.900 | 1.500 | Range | | Ni | ≤0,30 | — | 0.300 | Max | | Cu | ≤0,30 | — | 0.300 | Max | | Nb | ≤0,02 | — | 0.020 | Max | | Mo | ≤0,08 | — | 0.080 | 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 computed from composition · °C Predicted Ae3 810 °C Predicted Ae1 714 °C Predicted Acm 436 °C Predicted Bs 555 °C These four temperatures are a CALCULATION from this grade's own composition, using the published Li, Niebuhr, Meekisho & Atteridge (1998) model — never a measurement, and computed from the UPPER BOUND of each element's specified range, not a mid-range figure. Where this grade also has a measured transformation point (Ac1, Ac3, Ar1, Ar3) on file, it is shown separately, in Physical & mechanical properties, and is never replaced by the predicted figures here — Ae (predicted, equilibrium) and Ac/Ar (measured, on heating or cooling) are different physical quantities and can differ by tens of degrees; a mismatch between the two is not an error in either. ## Physical & mechanical properties Density 7,85 g/cm³ Exact Weldability readily weldable As published: without limitations. 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 · 13 values By thickness**Normalized** source `steelnumber` | Thickness mm | ReH N/mm² | Rm N/mm² | |---|---|---| | ≤ 16 | 295 | — | | 16 – 40 | 290 | — | | 40 – 60 | 285 | — | | 60 – 100 | 260 | — | | ≤ 100 | — | 460 – 580 | | 100 – 150 | 235 | 440 – 570 | | 150 – 250 | 220 | 430 – 570 | By delivery state**no delivery state stated** source `splav` | Delivery state | Rm N/mm² | Re N/mm² | A5% | KCU kJ/m² | |---|---|---|---|---| | Sheet, GOST 5520-79 | 430 – 520 | 255 – 275 | 20 | 590 | 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 - Normalizing t≤16 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/azhlNWIxMTQ1NA__ "Source: www.caishuku.com") ## Similar grades — and why Selection rule, stated so you can disagree with it: same number class 1.0, a shared category, and a published range for Mn / 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. [1.0425 1.0425 Mn 0,80-1,40 · Si ≤0,40 - ΔMn 0.10 - ΔSi 0.00 - 79 designations](/materials/material-no/1.0425 "1.0425")[P285NH 1.0477 Mn 0,60-1,40 · Si ≤0,40 - ΔMn 0.20 - ΔSi 0.00 - 3 designations](/materials/din-en/p285nh "P285NH")[19Mn6 1.0473 Mn 1,00-1,70 · Si ≤0,60 - ΔMn 0.15 - ΔSi 0.10 - 26 designations](/materials/din-en/19mn6 "19Mn6")[21Mn6 1.0485 Mn 1,15-1,60 · Si ≤0,60 - ΔMn 0.18 - ΔSi 0.10 - 4 designations](/materials/din-en/21mn6 "21Mn6")[19Mn5 1.0482 Mn 1,00-1,30 · Si 0,30-0,60 - ΔMn 0.05 - ΔSi 0.25 - 9 designations](/materials/din-en/19mn5 "19Mn5")[1.0345 1.0345 Mn 0,60-1,20 · Si ≤0,35 - ΔMn 0.30 - ΔSi 0.03 - 62 designations](/materials/material-no/1.0345 "1.0345") ## 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=bd6493c7-b81d-4eb6-970c-5fd3add15ab2&designation=f9979fa3-460c-4570-84b7-b385a56e17a0 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/aisi-sae/a414-f.pdf "Datasheet as PDF")