--- title: "GX2NiCrMoCuN20-18 — Cast stainless steels" description: "GX2NiCrMoCuN20-18: 1 equivalent designations across 1 standards, with the recorded chemical composition shown next to the source text." canonical: https://steelequivalents.com/materials/din-en/gx2nicrmocun20-18 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/din-en/gx2nicrmocun20-18.md cs: https://steelequivalents.com/cs/materiály/din-en/gx2nicrmocun20-18.md de: https://steelequivalents.com/de/werkstoffe/din-en/gx2nicrmocun20-18.md es: https://steelequivalents.com/es/materiales/din-en/gx2nicrmocun20-18.md fr: https://steelequivalents.com/fr/matériaux/din-en/gx2nicrmocun20-18.md hu: https://steelequivalents.com/hu/anyagok/din-en/gx2nicrmocun20-18.md it: https://steelequivalents.com/it/materiali/din-en/gx2nicrmocun20-18.md nl: https://steelequivalents.com/nl/materialen/din-en/gx2nicrmocun20-18.md pl: https://steelequivalents.com/pl/materiały/din-en/gx2nicrmocun20-18.md pt: https://steelequivalents.com/pt/materiais/din-en/gx2nicrmocun20-18.md ru: https://steelequivalents.com/ru/материалы/din-en/gx2nicrmocun20-18.md tr: https://steelequivalents.com/tr/malzemeler/din-en/gx2nicrmocun20-18.md zh: https://steelequivalents.com/zh/材料/din-en/gx2nicrmocun20-18.md ja: https://steelequivalents.com/ja/材料/din-en/gx2nicrmocun20-18.md ar: https://steelequivalents.com/ar/المواد/din-en/gx2nicrmocun20-18.md ko: https://steelequivalents.com/ko/재료/din-en/gx2nicrmocun20-18.md pt-br: https://steelequivalents.com/pt-br/materiais/din-en/gx2nicrmocun20-18.md hi: https://steelequivalents.com/hi/सामग्री/din-en/gx2nicrmocun20-18.md content_hash: sha256:8b1a7c1a399974429c8e3050a15c8879247fb456ea17b51cecf4ebd4fc28f712 generated: 2026-09-21 --- > **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/din-en/gx2nicrmocun20-18 > Canonical URL: https://steelequivalents.com/materials/din-en/gx2nicrmocun20-18 > 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. DIN / EN · Europe · 1 designation # GX2NiCrMoCuN20-18 GX2NiCrMoCuN20-18 is a material in the category [Cast stainless steels](/categories/cast-stainless-steels "Cast stainless steels"), held under material number 1.4531. Its recorded composition includes C ≤ 0.03%, Cr 17–18.5%, Ni 19–21%, Cu 1.8–2.2% and Mo 2.1–2.4%. No cross-standard equivalents are recorded for this grade yet. Its recorded density is 7.85 g/cm³. - [*Material no.* **1.4531**](/materials/material-no/1.4531 "Material no.: 1.4531") - [*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=4c5bc69a-a34f-4799-aa32-c55591cd5138&designation=92f2d6dd-0acc-4ee5-a038-a89dfbf41a40 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/din-en/gx2nicrmocun20-18.pdf "Datasheet as PDF") ## 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. ## Chemical composition 10 elements on file · weight % What this alloy is Fe Ni Cr Mo Iron — the balance, never listed by a standard — 56.9 % Ni — 20 % Cr — 17.8 % Mo — 2.3 % Traces & impurities · 3.1 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | ≤ 0.03 | | Si | 0.3–0.5 | | Mn | 0.3–0.6 | | P | 0.03 | | S | 0.02 | | Cr | 17–18.5 | | Mo | 2.1–2.4 | | Ni | 19–21 | | Cu | 1.8–2.2 | | N | 0.13–0.17 | Carbon Silicon Manganese Phosphorus Sulfur Chromium Molybdenum Nickel Copper 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 | ≤0,03 | — | 0.030 | Max | | N | 0,13-0,17 | 0.130 | 0.170 | Range | | Si | 0,30-0,50 | 0.300 | 0.500 | Range | | P | 0,03 | 0.030 | 0.030 | Exact | | S | 0,02 | 0.020 | 0.020 | Exact | | Cr | 17,0-18,5 | 17.000 | 18.500 | Range | | Mn | 0,30-0,60 | 0.300 | 0.600 | Range | | Ni | 19,0-21,0 | 19.000 | 21.000 | Range | | Cu | 1,80-2,20 | 1.800 | 2.200 | Range | | Mo | 2,10-2,40 | 2.100 | 2.400 | Range | 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 Ni / Cr 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. [GX7CrNiMoCuNb18-18 1.4585 Ni 19,0-21,0 · Cr 16,5-18,5 - ΔNi 0.00 - ΔCr 0.25 - 1 designations](/materials/din-en/gx7crnimocunb18-18 "GX7CrNiMoCuNb18-18") ## 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=4c5bc69a-a34f-4799-aa32-c55591cd5138&designation=92f2d6dd-0acc-4ee5-a038-a89dfbf41a40 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/din-en/gx2nicrmocun20-18.pdf "Datasheet as PDF")