--- title: "J22501 — Low-temperature structural steels" description: "J22501 in UNS: material number 1.5633, also listed as 24Ni8. Category: Low-temperature structural steels. Designations recorded for this grade: 3." canonical: https://steelequivalents.com/materials/uns/j22501 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/uns/j22501.md cs: https://steelequivalents.com/cs/materiály/uns/j22501.md de: https://steelequivalents.com/de/werkstoffe/uns/j22501.md es: https://steelequivalents.com/es/materiales/uns/j22501.md fr: https://steelequivalents.com/fr/matériaux/uns/j22501.md hu: https://steelequivalents.com/hu/anyagok/uns/j22501.md it: https://steelequivalents.com/it/materiali/uns/j22501.md nl: https://steelequivalents.com/nl/materialen/uns/j22501.md pl: https://steelequivalents.com/pl/materiały/uns/j22501.md pt: https://steelequivalents.com/pt/materiais/uns/j22501.md ru: https://steelequivalents.com/ru/материалы/uns/j22501.md tr: https://steelequivalents.com/tr/malzemeler/uns/j22501.md zh: https://steelequivalents.com/zh/材料/uns/j22501.md ja: https://steelequivalents.com/ja/材料/uns/j22501.md ar: https://steelequivalents.com/ar/المواد/uns/j22501.md ko: https://steelequivalents.com/ko/재료/uns/j22501.md pt-br: https://steelequivalents.com/pt-br/materiais/uns/j22501.md hi: https://steelequivalents.com/hi/सामग्री/uns/j22501.md content_hash: sha256:0e3b792f2ffa7db6e004373513f392995daf13f2f84ae4a832bc2336d06fe77d generated: 2026-09-22 --- > **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/uns/j22501 > Canonical URL: https://steelequivalents.com/materials/uns/j22501 > 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. UNS · United States · 3 designations # J22501 J22501 is a designation in UNS for the material held under material number 1.5633, also listed as 24Ni8. It is a material in the category Low-temperature structural steels. We list 3 designations recorded for this grade, in the standards DIN / EN and UNS. - [*Material no.* **1.5633**](/materials/material-no/1.5633 "Material no.: 1.5633") - [*Category* **Low-temperature structural steels · 55 grades**](/categories/low-temperature-structural-steels "Category: Low-temperature structural steels · 55 grades") - *Designations* **3** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=b639be2b-da0f-476e-9ebc-8ca4b65e4c49&designation=68e7697d-8562-48d9-b95a-614a8b4996e9 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/uns/j22501.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [DIN / EN 24Ni8 This grade’s own name](/materials/din-en/24ni8 "DIN / EN 24Ni8") ## About Low-temperature structural steels Low-temperature structural steels are structural steels designed to retain toughness and reliable load-bearing performance in cold service. Their resistance to brittle fracture at low temperatures makes them suitable for structures, pressure-containing equipment and other components exposed to severe cold. This describes the material class as a whole. Always confirm the individual grade against the standard before ordering. ## Also known as 3 designations · 2 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 - [24Ni8 This grade’s own name](/materials/din-en/24ni8 "DIN / EN 24Ni8") UNS United States · 2 - **J22501 This grade’s own name** - [K13050 Indicative](/materials/uns/k13050 "UNS K13050") Every designation on file is listed — no truncation, no “+ n more”. Each one is itself a route that leads back here. ## Chemical composition 7 elements on file · weight % What this alloy is Fe Ni Mn Cr Iron — the balance, never listed by a standard — 96.4 % Ni — 2.1 % Mn — 0.7 % Cr — 0.3 % Traces & impurities · 0.6 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | 0.2–0.28 | | Si | 0.15–0.35 | | Mn | 0.6–0.8 | | P | 0.035 | | S | 0.035 | | Cr | ≤ 0.3 | | Ni | 1.9–2.2 | Carbon Silicon Manganese Phosphorus Sulfur Chromium 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 | 0,20-0,28 | 0.200 | 0.280 | Range | | Si | 0,15-0,35 | 0.150 | 0.350 | Range | | P | 0,035 | 0.035 | 0.035 | Exact | | S | 0,035 | 0.035 | 0.035 | Exact | | Cr | ≤0,30 | — | 0.300 | Max | | Mn | 0,60-0,80 | 0.600 | 0.800 | Range | | Ni | 1,90-2,20 | 1.900 | 2.200 | 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 1.5, a shared category, and a published range for Ni / Mn 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. [GS-24Ni8 1.5633 Ni 1,90-2,20 · Mn 0,60-0,80 - ΔNi 0.00 - ΔMn 0.00 - 1 designations](/materials/din-en/gs-24ni8 "GS-24Ni8")[G9Ni10 1.5636 Ni 2,00-3,00 · Mn 0,50-0,80 - ΔNi 0.45 - ΔMn 0.05 - 1 designations](/materials/din-en/g9ni10 "G9Ni10")[12Ni9 1.5635 Ni 2,10-2,50 · Mn ≤0,70 - ΔNi 0.25 - ΔMn 0.35 - 2 designations](/materials/din-en/12ni9 "12Ni9") ## 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=b639be2b-da0f-476e-9ebc-8ca4b65e4c49&designation=68e7697d-8562-48d9-b95a-614a8b4996e9 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/uns/j22501.pdf "Datasheet as PDF")