--- title: "X5CrNiCu15-5 — Special steels for aviation and aerospace" description: "X5CrNiCu15-5: 12 equivalent designations across 5 standards, with the recorded chemical composition shown next to the source text." canonical: https://steelequivalents.com/materials/din-en/x5crnicu15-5 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/din-en/x5crnicu15-5.md cs: https://steelequivalents.com/cs/materiály/din-en/x5crnicu15-5.md de: https://steelequivalents.com/de/werkstoffe/din-en/x5crnicu15-5.md es: https://steelequivalents.com/es/materiales/din-en/x5crnicu15-5.md fr: https://steelequivalents.com/fr/matériaux/din-en/x5crnicu15-5.md hu: https://steelequivalents.com/hu/anyagok/din-en/x5crnicu15-5.md it: https://steelequivalents.com/it/materiali/din-en/x5crnicu15-5.md nl: https://steelequivalents.com/nl/materialen/din-en/x5crnicu15-5.md pl: https://steelequivalents.com/pl/materiały/din-en/x5crnicu15-5.md pt: https://steelequivalents.com/pt/materiais/din-en/x5crnicu15-5.md ru: https://steelequivalents.com/ru/материалы/din-en/x5crnicu15-5.md tr: https://steelequivalents.com/tr/malzemeler/din-en/x5crnicu15-5.md zh: https://steelequivalents.com/zh/材料/din-en/x5crnicu15-5.md ja: https://steelequivalents.com/ja/材料/din-en/x5crnicu15-5.md ar: https://steelequivalents.com/ar/المواد/din-en/x5crnicu15-5.md ko: https://steelequivalents.com/ko/재료/din-en/x5crnicu15-5.md pt-br: https://steelequivalents.com/pt-br/materiais/din-en/x5crnicu15-5.md hi: https://steelequivalents.com/hi/सामग्री/din-en/x5crnicu15-5.md content_hash: sha256:0d21902c9d5e33052c2bad09fb8a825db9506a5709eeeeae926f1a661c2e8ee2 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/din-en/x5crnicu15-5 > Canonical URL: https://steelequivalents.com/materials/din-en/x5crnicu15-5 > 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 · 12 designations # X5CrNiCu15-5 X5CrNiCu15-5 is a material in the category [Special steels for aviation and aerospace](/categories/special-steels-for-aviation-and-aerospace "Special steels for aviation and aerospace"), held under material number 1.4545. We list 11 designations recorded for this grade, in the standards UNS, AISI / SAE, ASTM and SAE AMS. Its recorded composition includes C ≤ 0.07%, Si ≤ 1%, Cr 15–15.5%, Ni 3–5.5% and Cu 2.5–4.5%. Its recorded density is 7.85 g/cm³. - [*Material no.* **1.4545**](/materials/material-no/1.4545 "Material no.: 1.4545") - [*Category* **Special steels for aviation and aerospace · 39 grades**](/categories/special-steels-for-aviation-and-aerospace "Category: Special steels for aviation and aerospace · 39 grades") - *Designations* **12** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=bc45e675-82cb-4ba1-b3bb-3d948168e052&designation=2f5987a3-415e-4b61-9294-a9a8401069eb "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/din-en/x5crnicu15-5.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [UNS S15500 This grade’s own name · 2 grades on that route](/materials/uns/s15500 "UNS S15500") - [AISI / SAE XM-12 This grade’s own name · 2 grades on that route](/materials/aisi-sae/xm-12 "AISI / SAE XM-12") ## About Special steels for aviation and aerospace Special steels for aviation and aerospace are engineered steels designed to provide controlled mechanical properties and reliable performance in demanding service. Their alloying and heat-treatment capabilities support components that require a combination of strength, toughness and fatigue resistance, including aircraft structures and engine parts. This describes the material class as a whole. Always confirm the individual grade against the standard before ordering. ## Also known as 12 designations · 5 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 - **X5CrNiCu15-5 This grade’s own name** UNS United States · 1 - [S15500 This grade’s own name](/materials/uns/s15500 "UNS S15500") AISI / SAE United States · 2 - [15-5PH Indicative](/materials/aisi-sae/15-5ph "AISI / SAE 15-5PH") - [XM-12 This grade’s own name](/materials/aisi-sae/xm-12 "AISI / SAE XM-12") ASTM United States · 5 - [A564 Indicative](/materials/astm/a564 "ASTM A564") - [A564 Type XM-12 Indicative](/materials/astm/a564-type-xm-12 "ASTM A564 Type XM-12") - [A693 Indicative](/materials/astm/a693 "ASTM A693") - [A705 Indicative](/materials/astm/a705 "ASTM A705") - [A705 Type XM-12 Indicative](/materials/astm/a705-type-xm-12 "ASTM A705 Type XM-12") SAE AMS United States / Aerospace · 3 - [5659 Indicative](/materials/ams/5659 "SAE AMS 5659") - [5826 Indicative wire](/materials/ams/5826 "SAE AMS 5826") - [5862 Indicative plate sheet strip](/materials/ams/5862 "SAE AMS 5862") Every designation on file is listed — no truncation, no “+ n more”. Each one is itself a route that leads back here. ## Chemical composition 9 elements on file · weight % What this alloy is Fe Cr Ni Cu Iron — the balance, never listed by a standard — 74.4 % Cr — 15.3 % Ni — 4.3 % Cu — 3.5 % Traces & impurities · 2.6 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | ≤ 0.07 | | Si | ≤ 1 | | Mn | ≤ 1 | | P | 0.03 | | S | 0.015 | | Cr | 15–15.5 | | Mo | ≤ 0.5 | | Ni | 3–5.5 | | Cu | 2.5–4.5 — Unusual | Carbon Silicon Manganese Phosphorus Sulfur Chromium Molybdenum Nickel Copper 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 | ≤0,07 | — | 0.070 | Max | | Si | ≤1,00 | — | 1.000 | Max | | P | 0,03 | 0.030 | 0.030 | Exact | | S | 0,015 | 0.015 | 0.015 | Exact | | Cr | 15,0-15,5 | 15.000 | 15.500 | Range | | Mn | ≤1,00 | — | 1.000 | Max | | Ni | 3,00-5,50 | 3.000 | 5.500 | Range | | Cu | 2,50-4,50 | 2.500 | 4.500 | Range | | Mo | ≤0,50 | — | 0.500 | Max | - ≥(5xC)≤0,45 - ≥(5xC)≤0,45 - ≥(5xC)≤0,45 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. [GX5CrNiCuNb16-4 1.4549 Cr 15,5-16,7 · Ni 3,60-4,60 - ΔCr 0.85 - ΔNi 0.15 - 2 designations](/materials/din-en/gx5crnicunb16-4 "GX5CrNiCuNb16-4")[X5CrNiCuNb17-4-4 1.4548 Cr 15,0-17,5 · Ni 3,00-5,00 - ΔCr 1.00 - ΔNi 0.25 - 21 designations](/materials/din-en/x5crnicunb17-4-4 "X5CrNiCuNb17-4-4")[X15CrNi17-3 1.4044 Cr 15,0-18,0 · Ni 2,00-3,00 - ΔCr 1.25 - ΔNi 1.75 - 33 designations](/materials/din-en/x15crni17-3 "X15CrNi17-3") ## 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=bc45e675-82cb-4ba1-b3bb-3d948168e052&designation=2f5987a3-415e-4b61-9294-a9a8401069eb "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/din-en/x5crnicu15-5.pdf "Datasheet as PDF")