--- title: "1.4558 — Stainless steels" description: "1.4558 is the material number of the grade also listed as X2NiCrAlTi32-20. Category: Stainless steels. Designations recorded for this grade: 13." canonical: https://steelequivalents.com/materials/material-no/1.4558 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/material-no/1.4558.md cs: https://steelequivalents.com/cs/materiály/číslo-materiálu/1.4558.md de: https://steelequivalents.com/de/werkstoffe/werkstoff-nr/1.4558.md es: https://steelequivalents.com/es/materiales/número-de-material/1.4558.md fr: https://steelequivalents.com/fr/matériaux/numéro-de-matériau/1.4558.md hu: https://steelequivalents.com/hu/anyagok/anyagszám/1.4558.md it: https://steelequivalents.com/it/materiali/numero-materiale/1.4558.md nl: https://steelequivalents.com/nl/materialen/materiaalnummer/1.4558.md pl: https://steelequivalents.com/pl/materiały/numer-materiału/1.4558.md pt: https://steelequivalents.com/pt/materiais/número-do-material/1.4558.md ru: https://steelequivalents.com/ru/материалы/номер-материала/1.4558.md tr: https://steelequivalents.com/tr/malzemeler/malzeme-numarası/1.4558.md zh: https://steelequivalents.com/zh/材料/材料编号/1.4558.md ja: https://steelequivalents.com/ja/材料/材料番号/1.4558.md ar: https://steelequivalents.com/ar/المواد/رقم-المادة/1.4558.md ko: https://steelequivalents.com/ko/재료/재료번호/1.4558.md pt-br: https://steelequivalents.com/pt-br/materiais/número-do-material/1.4558.md hi: https://steelequivalents.com/hi/सामग्री/सामग्री-संख्या/1.4558.md content_hash: sha256:0d188e245b2135b300436b84f5001252d6439bb62f931a57be2912e80acc6705 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/1.4558 > Canonical URL: https://steelequivalents.com/materials/material-no/1.4558 > 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 · 13 designations # 1.4558 1.4558 is the material number of the grade also listed as X2NiCrAlTi32-20. It is a material in the category Stainless steels. We list 13 designations recorded for this grade, in the standards DIN / EN, UNS, AFNOR, ISO and GOST. - ***Material no.* **1.4558**** - [*Category* **Stainless steels · 468 grades**](/categories/stainless-steels "Category: Stainless steels · 468 grades") - *Designations* **13** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=5df1498c-138a-4ce5-9e17-3c26094e3d15 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/material-no/1.4558.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [DIN / EN X2NiCrAlTi32-20 This grade’s own name](/materials/din-en/x2nicralti32-20 "DIN / EN X2NiCrAlTi32-20") - [UNS N08800 This grade’s own name · 4 grades on that route](/materials/uns/n08800 "UNS N08800") ## About Stainless steels Stainless steels are corrosion-resistant alloy steels whose chromium content promotes a protective passive surface film. They are used for equipment, structures and components exposed to moisture, chemicals or hygienic service, with different alloy compositions selected for corrosion resistance, strength, formability or weldability. This describes the material class as a whole. Always confirm the individual grade against the standard before ordering. ## Also known as 13 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 - [X2NiCrAlTi32-20 This grade’s own name](/materials/din-en/x2nicralti32-20 "DIN / EN X2NiCrAlTi32-20") UNS United States · 6 - [Incoloy 800 Indicative](/materials/ks/incoloy800 "UNS Incoloy 800") - [Incoloy 800H Indicative](/materials/uns/incoloy-800h "UNS Incoloy 800H") - [Incoloy 800HT Indicative](/materials/uns/incoloy-800ht "UNS Incoloy 800HT") - [N08800 This grade’s own name](/materials/uns/n08800 "UNS N08800") - [N08810 Indicative](/materials/uns/n08810 "UNS N08810") - [N08811 Indicative](/materials/uns/n08811 "UNS N08811") AFNOR France · 2 - [Z10NC32-21 Indicative](/materials/afnor/z10nc32-21 "AFNOR Z10NC32-21") - [Z8NC33-21 Indicative](/materials/afnor/z8nc33-21 "AFNOR Z8NC33-21") ISO International · 2 - [FeNi32Cr21AlTi Indicative](/materials/iso/feni32cr21alti "ISO FeNi32Cr21AlTi") - [NW8800 Indicative](/materials/iso/nw8800 "ISO NW8800") GOST Russia / CIS · 2 - [Ch20N32T Indicative](/materials/gost/ch20n32t "GOST Ch20N32T") - [EP670 /ChN32T Indicative](/materials/gost/ep670-chn32t "GOST EP670 /ChN32T") 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 Ni Cr Mn Iron — the balance, never listed by a standard — 42.9 % Ni — 33.5 % Cr — 21.5 % Mn — 1 % Traces & impurities · 1.1 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | ≤ 0.03 | | Si | ≤ 0.7 | | Mn | ≤ 1 | | P | 0.02 | | S | 0.015 | | Cr | 20–23 | | Ni | 32–35 — Unusual | | Al | 0.15–0.45 | | Ti | ≥8x(C+N)-0,60 | Carbon Silicon Manganese Phosphorus Sulfur Chromium Nickel Aluminium Titanium 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 | ≤0,030 | — | 0.030 | Max | | Al | 0,15-0,45 | 0.150 | 0.450 | Range | | Si | ≤0,70 | — | 0.700 | Max | | P | 0,02 | 0.020 | 0.020 | Exact | | S | 0,015 | 0.015 | 0.015 | Exact | | Ti | ≥8x(C+N)-0,60 | — | — | No numeric bound | | Cr | 20,0-23,0 | 20.000 | 23.000 | Range | | Mn | ≤1,00 | — | 1.000 | Max | | Ni | 32,0-35,0 | 32.000 | 35.000 | 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 7,95 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. ## 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=5df1498c-138a-4ce5-9e17-3c26094e3d15 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/material-no/1.4558.pdf "Datasheet as PDF")