--- title: "1.4540 — X4CrNiCuNb16-4, 26 equivalent designations" description: "1.4540 is the material number of the grade also listed as X4CrNiCuNb16-4. It is a material in the category Others. Designations recorded for this grade: 26." canonical: https://steelequivalents.com/materials/material-no/1.4540 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/material-no/1.4540.md cs: https://steelequivalents.com/cs/materiály/číslo-materiálu/1.4540.md de: https://steelequivalents.com/de/werkstoffe/werkstoff-nr/1.4540.md es: https://steelequivalents.com/es/materiales/número-de-material/1.4540.md fr: https://steelequivalents.com/fr/matériaux/numéro-de-matériau/1.4540.md hu: https://steelequivalents.com/hu/anyagok/anyagszám/1.4540.md it: https://steelequivalents.com/it/materiali/numero-materiale/1.4540.md nl: https://steelequivalents.com/nl/materialen/materiaalnummer/1.4540.md pl: https://steelequivalents.com/pl/materiały/numer-materiału/1.4540.md pt: https://steelequivalents.com/pt/materiais/número-do-material/1.4540.md ru: https://steelequivalents.com/ru/материалы/номер-материала/1.4540.md tr: https://steelequivalents.com/tr/malzemeler/malzeme-numarası/1.4540.md zh: https://steelequivalents.com/zh/材料/材料编号/1.4540.md ja: https://steelequivalents.com/ja/材料/材料番号/1.4540.md ar: https://steelequivalents.com/ar/المواد/رقم-المادة/1.4540.md ko: https://steelequivalents.com/ko/재료/재료번호/1.4540.md pt-br: https://steelequivalents.com/pt-br/materiais/número-do-material/1.4540.md hi: https://steelequivalents.com/hi/सामग्री/सामग्री-संख्या/1.4540.md content_hash: sha256:77e9d7ac20c1ce0a43d75a4a551da9e4d61f7ed510524dccc65c5f808bf7b521 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/1.4540 > Canonical URL: https://steelequivalents.com/materials/material-no/1.4540 > 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 · 26 designations # 1.4540 1.4540 is the material number of the grade also listed as X4CrNiCuNb16-4. It is a material in the category Others. We list 26 designations recorded for this grade, in the standards DIN / EN, UNS, AISI / SAE, ASTM, AFNOR, SAE AMS and GOST. - ***Material no.* **1.4540**** - [*Category* **Others · 1754 grades**](/categories/others "Category: Others · 1754 grades") - *Designations* **26** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=429ea0ff-fcab-4a9d-be95-93587427fdb9 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/material-no/1.4540.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [DIN / EN X4CrNiCuNb16-4 This grade’s own name](/materials/din-en/x4crnicunb16-4 "DIN / EN X4CrNiCuNb16-4") - [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 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 26 designations · 7 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 - [X4CrNiCuNb16-4 This grade’s own name](/materials/din-en/x4crnicunb16-4 "DIN / EN X4CrNiCuNb16-4") UNS United States · 2 - [S15500 This grade’s own name](/materials/uns/s15500 "UNS S15500") - [S17400 Indicative](/materials/uns/s17400 "UNS S17400") AISI / SAE United States · 3 - [15-5PH Indicative](/materials/aisi-sae/15-5ph "AISI / SAE 15-5PH") - [630 Indicative](/materials/aisi-sae/630 "AISI / SAE 630") - [XM-12 This grade’s own name](/materials/aisi-sae/xm-12 "AISI / SAE XM-12") ASTM United States · 6 - [17-4 PH Indicative](/materials/aisi-sae/17-4ph "ASTM 17-4 PH") - [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") AFNOR France · 5 - [17-4 DP Indicative](/materials/afnor/17-4-dp "AFNOR 17-4 DP") - [174 PH Indicative](/materials/aisi-sae/17-4ph "AFNOR 174 PH") - [X17U4 Indicative](/materials/afnor/x17u4 "AFNOR X17U4") - [Z7CNU16-04 Indicative](/materials/afnor/z7cnu16-04 "AFNOR Z7CNU16-04") - [Z7CNU17-04 Indicative](/materials/afnor/z7cnu17-04 "AFNOR Z7CNU17-04") 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") GOST Russia / CIS · 6 - [05Ch16N4D2B Indicative](/materials/gost/05ch16n4d2b "GOST 05Ch16N4D2B") - [05Х16Н4Д2Б Indicative](/materials/gost/05kh16n4d2b "GOST 05Х16Н4Д2Б") - [07Ch14N4DB Indicative](/materials/gost/07ch14n4db "GOST 07Ch14N4DB") - [07Ch16N4D4B-Sh Indicative](/materials/gost/07ch16n4d4b-sh "GOST 07Ch16N4D4B-Sh") - [07Х14Н4ДБ Indicative](/materials/gost/07kh14n4db "GOST 07Х14Н4ДБ") - [07Х16Н4Д4Б-Ш Indicative](/materials/gost/07kh16n4d4b-sh "GOST 07Х16Н4Д4Б-Ш") 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 Cu Iron — the balance, never listed by a standard — 74.1 % Cr — 16 % Ni — 4.3 % Cu — 3.3 % Traces & impurities · 2.4 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | ≤ 0.06 | | Si | ≤ 1 | | Mn | ≤ 1 | | Cr | 15–17 | | Ni | 3.5–5 | | Cu | 2.5–4 — Unusual | | Nb | 0.15–0.4 | | N | 0.05 | Carbon Silicon Manganese Chromium Nickel Copper 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 | ≤0,06 | — | 0.060 | Max | | N | 0,05 | 0.050 | 0.050 | Exact | | Si | ≤1,00 | — | 1.000 | Max | | Cr | 15,0-17,0 | 15.000 | 17.000 | Range | | Mn | ≤1,00 | — | 1.000 | Max | | Ni | 3,50-5,00 | 3.500 | 5.000 | Range | | Cu | 2,50-4,00 | 2.500 | 4.000 | Range | | Nb | 0,15-0,40 | 0.150 | 0.400 | 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 Not enough recorded composition to predict a transformation temperature for this grade — missing: Mo. ## 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. [GX 5CrNiCu 16-4 1.4525 Cr 15,0-17,0 · Ni 3,50-5,50 - ΔCr 0.00 - ΔNi 0.25 - 6 designations](/materials/din-en/gx-5crnicu-16-4 "GX 5CrNiCu 16-4")[X9CrNiMoN17-5-3 1.4457 Cr 16,0-17,0 · Ni 4,00-5,00 - ΔCr 0.50 - ΔNi 0.25 - 3 designations](/materials/din-en/x9crnimon17-5-3 "X9CrNiMoN17-5-3")[X 8 CrNiMoN 17 5 1.4492 Cr 16,0-17,0 · Ni 4,00-5,00 - ΔCr 0.50 - ΔNi 0.25 - 1 designations](/materials/din-en/x-8-crnimon-17-5 "X 8 CrNiMoN 17 5")[X 12 CrNiMoN 15 5 1.4493 Cr 15,0-16,0 · Ni 4,00-5,00 - ΔCr 0.50 - ΔNi 0.25 - 1 designations](/materials/din-en/x-12-crnimon-15-5 "X 12 CrNiMoN 15 5")[X12CrMnNiN17-7-5 1.4372 Cr 16,0-18,0 · Ni 3,50-5,50 - ΔCr 1.00 - ΔNi 0.25 - 27 designations](/materials/din-en/x12crmnnin17-7-5 "X12CrMnNiN17-7-5") ## 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=429ea0ff-fcab-4a9d-be95-93587427fdb9 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/material-no/1.4540.pdf "Datasheet as PDF")