--- title: "Ao450FK — H 300 PD, 39 equivalent designations" description: "Ao450FK in MSZ: material number 1.0443, also listed as H 300 PD. It is a material in the category Others. Designations recorded for this grade: 39." canonical: https://steelequivalents.com/materials/msz/ao450fk language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/msz/ao450fk.md cs: https://steelequivalents.com/cs/materiály/msz/ao450fk.md de: https://steelequivalents.com/de/werkstoffe/msz/ao450fk.md es: https://steelequivalents.com/es/materiales/msz/ao450fk.md fr: https://steelequivalents.com/fr/matériaux/msz/ao450fk.md hu: https://steelequivalents.com/hu/anyagok/msz/ao450fk.md it: https://steelequivalents.com/it/materiali/msz/ao450fk.md nl: https://steelequivalents.com/nl/materialen/msz/ao450fk.md pl: https://steelequivalents.com/pl/materiały/msz/ao450fk.md pt: https://steelequivalents.com/pt/materiais/msz/ao450fk.md ru: https://steelequivalents.com/ru/материалы/msz/ao450fk.md tr: https://steelequivalents.com/tr/malzemeler/msz/ao450fk.md zh: https://steelequivalents.com/zh/材料/msz/ao450fk.md ja: https://steelequivalents.com/ja/材料/msz/ao450fk.md ar: https://steelequivalents.com/ar/المواد/msz/ao450fk.md ko: https://steelequivalents.com/ko/재료/msz/ao450fk.md pt-br: https://steelequivalents.com/pt-br/materiais/msz/ao450fk.md hi: https://steelequivalents.com/hi/सामग्री/msz/ao450fk.md content_hash: sha256:5e5903854adea22705c60beb2e7cd4f499f4264e9e9c3beca3972709dc8d33d0 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/msz/ao450fk > Canonical URL: https://steelequivalents.com/materials/msz/ao450fk > 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. MSZ · Hungary · 39 designations # Ao450FK Ao450FK is a designation in MSZ for the material held under material number 1.0443, also listed as H 300 PD. It is a material in the category Others. We list 39 designations recorded for this grade, in the standards DIN / EN, AISI / SAE, BS, AFNOR, JIS, GOST, UNI, SS, ČSN, PN, MSZ, STAS, BDS and ÖNORM. - [*Material no.* **1.0443**](/materials/material-no/1.0443 "Material no.: 1.0443") - [*Category* **Others · 1754 grades**](/categories/others "Category: Others · 1754 grades") - *Designations* **39** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=b763eafd-23ac-421c-82dd-ef579ba5142c&designation=5ce205c2-fe84-4830-af5c-ad07e4c96565 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/msz/ao450fk.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [DIN / EN H 300 PD This grade’s own name](/materials/din-en/h-300-pd "DIN / EN H 300 PD") ## About Others These are miscellaneous metallic alloys that do not fit a more specific material family and may be based on iron, nickel, cobalt, copper or other alloy systems. They are selected for applications requiring particular combinations of strength, hardness, toughness, wear resistance or resistance to demanding service conditions. This describes the material class as a whole. Always confirm the individual grade against the standard before ordering. ## Also known as 39 designations · 14 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 - [H 300 PD This grade’s own name](/materials/din-en/h-300-pd "DIN / EN H 300 PD") - [HX 300 PD This grade’s own name](/materials/din-en/hx-300-pd "DIN / EN HX 300 PD") AISI / SAE United States · 9 - [1A Indicative](/materials/aisi-sae/1a "AISI / SAE 1A") - [2A Indicative](/materials/aisi-sae/2a "AISI / SAE 2A") - [A10 Indicative](/materials/aisi-sae/a10 "AISI / SAE A10") - [Gr.WCA Indicative](/materials/aisi-sae/gr-wca "AISI / SAE Gr.WCA") - [GrLCA Indicative](/materials/aisi-sae/grlca "AISI / SAE GrLCA") - [GrWCB Indicative](/materials/aisi-sae/grwcb "AISI / SAE GrWCB") - [J02002 Indicative](/materials/uns/j02002 "AISI / SAE J02002") - [J02502 Indicative](/materials/aisi-sae/j02502 "AISI / SAE J02502") - [N1 Indicative](/materials/aisi-sae/n1 "AISI / SAE N1") BS United Kingdom · 3 - [161-430 Indicative](/materials/bs/161-430 "BS 161-430") - [161-430A Indicative](/materials/bs/161-430a "BS 161-430A") - [430A Indicative](/materials/bs/430a "BS 430A") AFNOR France · 4 - [230-400-M Indicative](/materials/afnor/230-400-m "AFNOR 230-400-M") - [A48M1 Indicative](/materials/afnor/a48m1 "AFNOR A48M1") - [FA-M Indicative](/materials/afnor/fa-m "AFNOR FA-M") - [FB-M Indicative](/materials/afnor/fb-m "AFNOR FB-M") JIS Japan · 4 - [SC410 Indicative](/materials/jis/sc410 "JIS SC410") - [SC450 Indicative](/materials/jis/sc450 "JIS SC450") - [SC46 Indicative](/materials/jis/sc46 "JIS SC46") - [SCPH1 Indicative](/materials/jis/scph1 "JIS SCPH1") GOST Russia / CIS · 4 - [20L Indicative](/materials/gost/20l "GOST 20L") - [20Л Indicative](/materials/gost/20l "GOST 20Л") - [25L Indicative](/materials/gost/25l "GOST 25L") - [25Л Indicative](/materials/gost/25l "GOST 25Л") UNI Italy · 2 - [FeG45 Indicative](/materials/uni/feg45 "UNI FeG45") - [GC20 Indicative](/materials/uni/gc20 "UNI GC20") SS Sweden · 1 - [1305 Indicative](/materials/ss/1305 "SS 1305") ČSN Czechia · 2 - [422 640 Indicative](/materials/csn/422-640 "ČSN 422 640") - [422 643 Indicative](/materials/csn/422-643 "ČSN 422 643") PN Poland · 3 - [L20 Indicative](/materials/pn/l20 "PN L20") - [L450 Indicative](/materials/din-en/l450 "PN L450") - [LII400 Indicative](/materials/pn/lii400 "PN LII400") MSZ Hungary · 1 - **Ao450FK Indicative** STAS Romania · 1 - [OT450-3 Indicative](/materials/stas/ot450-3 "STAS OT450-3") BDS Bulgaria · 2 - [25LI Indicative](/materials/bds/25li "BDS 25LI") - [25LII Indicative](/materials/bds/25lii "BDS 25LII") ÖNORM Austria · 1 - [GS45 Indicative](/materials/din-en/gs-45 "ÖNORM GS45") 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 Mn Si P Iron — the balance, never listed by a standard — 98.5 % Mn — 0.7 % Si — 0.5 % P — 0.1 % Traces & impurities · 0.2 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | ≤ 0.11 | | Si | ≤ 0.5 | | Mn | ≤ 0.7 | | P | 0.12 — Unusual | | S | 0.025 | | Al | ≥ 0.02 | Carbon Silicon Manganese Phosphorus Sulfur 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 | ≤0,11 | — | 0.110 | Max | | Al | ≥0,020 | 0.020 | — | Min | | Si | ≤0,50 | — | 0.500 | Max | | P | 0,12 | 0.120 | 0.120 | Exact | | S | 0,025 | 0.025 | 0.025 | Exact | | Mn | ≤0,70 | — | 0.700 | 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, Cr, Mo. ## Physical & mechanical properties Density 7,85 g/cm³ Exact Transformation point Ac1 735 °C Exact Transformation point Ac3 854 °C Exact · Ac3(Acm) Transformation point Ar3 835 °C Exact · Ar3(Arcm) Transformation point Ar1 680 °C Exact Weldability readily weldable As published: without limitations. Flake sensitivity not susceptible As published: not predisposed Temper brittleness not susceptible As published: not 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 2 conditions · 53 values By dimension**Normalizing 880 - 900°C,Drawing 630 - 650°C** source `splav` | Dimension mm | Rm N/mm² | Re N/mm² | A5% | Z% | KCU kJ/m² | |---|---|---|---|---|---| | to 100 | 412 | 216 | 22 | 35 | 491 | 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 | 7.85 | 201 | — | 54 | — | 170 | | 100 | — | 196 | 12.2 | 53 | 487 | 220 | | 200 | — | 188 | 12.7 | 51 | 500 | 294 | | 300 | — | 183 | 13.1 | 48 | 517 | 385 | | 400 | — | 173 | 13.5 | 43 | 533 | 490 | | 500 | — | 165 | 13.9 | 39 | 559 | 604 | | 600 | — | 152 | 14.4 | 35 | 588 | 761 | | 700 | — | 132 | 14.9 | 32 | 638 | 932 | | 800 | — | 120 | 12.6 | 27 | 706 | 1101 | | 900 | — | — | 12.4 | 27 | 706 | 1139 | 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 1.0, 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. [H 220 PD 1.0358 Mn ≤0,70 · Si ≤0,50 - ΔMn 0.00 - ΔSi 0.00 - 2 designations](/materials/din-en/h-220-pd "H 220 PD")[H 260 PD 1.0431 Mn ≤0,70 · Si ≤0,50 - ΔMn 0.00 - ΔSi 0.00 - 2 designations](/materials/din-en/h-260-pd "H 260 PD")[P195GH 1.0348 Mn ≤0,70 · Si ≤0,35 - ΔMn 0.00 - ΔSi 0.08 - 2 designations](/materials/din-en/p195gh "P195GH")[C22GPb 1.0404 Mn 0,30-0,60 · Si ≤0,40 - ΔMn 0.10 - ΔSi 0.05 - 2 designations](/materials/din-en/c22gpb "C22GPb")[GL-A 1.0440 Mn ≤0,40 · Si ≤0,50 - ΔMn 0.15 - ΔSi 0.00 - 2 designations](/materials/din-en/gl-a "GL-A")[GL-A 1.0441 Mn ≤0,40 · Si ≤0,50 - ΔMn 0.15 - ΔSi 0.00 - 3 designations](/materials/din-en/gl-a "GL-A") ## 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=b763eafd-23ac-421c-82dd-ef579ba5142c&designation=5ce205c2-fe84-4830-af5c-ad07e4c96565 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/msz/ao450fk.pdf "Datasheet as PDF")