--- title: "1.4421 — Cast stainless steels" description: "1.4421 is the material number of the grade also listed as GX4CrNi16-4. Category: Cast stainless steels. Designations recorded for this grade: 1." canonical: https://steelequivalents.com/materials/material-no/1.4421 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/material-no/1.4421.md cs: https://steelequivalents.com/cs/materiály/číslo-materiálu/1.4421.md de: https://steelequivalents.com/de/werkstoffe/werkstoff-nr/1.4421.md es: https://steelequivalents.com/es/materiales/número-de-material/1.4421.md fr: https://steelequivalents.com/fr/matériaux/numéro-de-matériau/1.4421.md hu: https://steelequivalents.com/hu/anyagok/anyagszám/1.4421.md it: https://steelequivalents.com/it/materiali/numero-materiale/1.4421.md nl: https://steelequivalents.com/nl/materialen/materiaalnummer/1.4421.md pl: https://steelequivalents.com/pl/materiały/numer-materiału/1.4421.md pt: https://steelequivalents.com/pt/materiais/número-do-material/1.4421.md ru: https://steelequivalents.com/ru/материалы/номер-материала/1.4421.md tr: https://steelequivalents.com/tr/malzemeler/malzeme-numarası/1.4421.md zh: https://steelequivalents.com/zh/材料/材料编号/1.4421.md ja: https://steelequivalents.com/ja/材料/材料番号/1.4421.md ar: https://steelequivalents.com/ar/المواد/رقم-المادة/1.4421.md ko: https://steelequivalents.com/ko/재료/재료번호/1.4421.md pt-br: https://steelequivalents.com/pt-br/materiais/número-do-material/1.4421.md hi: https://steelequivalents.com/hi/सामग्री/सामग्री-संख्या/1.4421.md content_hash: sha256:bc13353902ff7da537323a978418ec5b39192887ef3501e540310aabe0ef14b8 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/material-no/1.4421 > Canonical URL: https://steelequivalents.com/materials/material-no/1.4421 > 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. Material number · Europe · 1 designation # 1.4421 1.4421 is the material number of the grade also listed as GX4CrNi16-4. It is a material in the category Cast stainless steels. We list 1 designations recorded for this grade, in the standards DIN / EN. - ***Material no.* **1.4421**** - [*Category* **Cast stainless steels · 87 grades**](/categories/cast-stainless-steels "Category: Cast stainless steels · 87 grades") - *Designations* **1** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=4b3068b9-a6dd-4476-9978-00554aa64cca "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/material-no/1.4421.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [DIN / EN GX4CrNi16-4 This grade’s own name](/materials/din-en/gx4crni16-4 "DIN / EN GX4CrNi16-4") ## About Cast stainless steels Cast stainless steels are stainless-steel materials produced by casting, combining corrosion resistance with the ability to form complex component shapes. Their composition and mechanical behaviour vary by grade, and they are used for corrosion-resistant cast components such as pumps, valves and process equipment. This describes the material class as a whole. Always confirm the individual grade against the standard before ordering. ## Also known as 1 designations · 1 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 - [GX4CrNi16-4 This grade’s own name](/materials/din-en/gx4crni16-4 "DIN / EN GX4CrNi16-4") Every designation on file is listed — no truncation, no “+ n more”. Each one is itself a route that leads back here. ## Chemical composition 8 elements on file · weight % What this alloy is Fe Cr Ni Mn Iron — the balance, never listed by a standard — 76.1 % Cr — 16.5 % Ni — 4.8 % Mn — 1 % Traces & impurities · 1.6 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | ≤ 0.06 | | Si | ≤ 0.8 | | Mn | ≤ 1 | | P | 0.035 | | S | 0.02 | | Cr | 15.5–17.5 | | Mo | ≤ 0.7 | | Ni | 4–5.5 | Carbon Silicon Manganese Phosphorus Sulfur Chromium Molybdenum Nickel 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 | ≤0,06 | — | 0.060 | Max | | Si | ≤0,80 | — | 0.800 | Max | | P | 0,035 | 0.035 | 0.035 | Exact | | S | 0,02 | 0.020 | 0.020 | Exact | | Cr | 15,5-17,5 | 15.500 | 17.500 | Range | | Mn | ≤1,00 | — | 1.000 | Max | | Ni | 4,00-5,50 | 4.000 | 5.500 | Range | | Mo | ≤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 This grade's composition falls outside the published model's validated range (a low-alloy composition window), so no transformation temperature is predicted here. ## Physical & mechanical properties Density 7,85 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. ## 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 / Ni 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. [GX4CrNiMo 16-5-1 1.4405 Cr 15,0-17,0 · Ni 4,00-6,00 - ΔCr 0.50 - ΔNi 0.25 - 2 designations](/materials/din-en/gx4crnimo-16-5-1 "GX4CrNiMo 16-5-1")[GX4CrNiMo16-5-2 1.4411 Cr 15,0-17,0 · Ni 4,00-6,00 - ΔCr 0.50 - ΔNi 0.25 - 1 designations](/materials/din-en/gx4crnimo16-5-2 "GX4CrNiMo16-5-2")[GX10CrNiMoN15-4-2 1.4426 Cr 14,5-15,5 · Ni 3,50-4,50 - ΔCr 1.50 - ΔNi 0.75 - 1 designations](/materials/din-en/gx10crnimon15-4-2 "GX10CrNiMoN15-4-2") ## 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=4b3068b9-a6dd-4476-9978-00554aa64cca "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/material-no/1.4421.pdf "Datasheet as PDF")