--- title: "1.5Ni355 — Low-temperature structural steels" description: "1.5Ni355 in AFNOR: material number 1.6228, also listed as 14NiMn6. It is a material in the category Low-temperature structural steels." canonical: https://steelequivalents.com/materials/afnor/1-5ni355 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/afnor/1-5ni355.md cs: https://steelequivalents.com/cs/materiály/afnor/1-5ni355.md de: https://steelequivalents.com/de/werkstoffe/afnor/1-5ni355.md es: https://steelequivalents.com/es/materiales/afnor/1-5ni355.md fr: https://steelequivalents.com/fr/matériaux/afnor/1-5ni355.md hu: https://steelequivalents.com/hu/anyagok/afnor/1-5ni355.md it: https://steelequivalents.com/it/materiali/afnor/1-5ni355.md nl: https://steelequivalents.com/nl/materialen/afnor/1-5ni355.md pl: https://steelequivalents.com/pl/materiały/afnor/1-5ni355.md pt: https://steelequivalents.com/pt/materiais/afnor/1-5ni355.md ru: https://steelequivalents.com/ru/материалы/afnor/1-5ni355.md tr: https://steelequivalents.com/tr/malzemeler/afnor/1-5ni355.md zh: https://steelequivalents.com/zh/材料/afnor/1-5ni355.md ja: https://steelequivalents.com/ja/材料/afnor/1-5ni355.md ar: https://steelequivalents.com/ar/المواد/afnor/1-5ni355.md ko: https://steelequivalents.com/ko/재료/afnor/1-5ni355.md pt-br: https://steelequivalents.com/pt-br/materiais/afnor/1-5ni355.md hi: https://steelequivalents.com/hi/सामग्री/afnor/1-5ni355.md content_hash: sha256:0e2c855be018ddec2bad171324532f509fdc7291e5e42af2186804c28d8c4532 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/afnor/1-5ni355 > Canonical URL: https://steelequivalents.com/materials/afnor/1-5ni355 > 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. AFNOR · France · 3 designations # 1.5Ni355 1.5Ni355 is a designation in AFNOR for the material held under material number 1.6228, also listed as 14NiMn6. 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 AFNOR. - [*Material no.* **1.6228**](/materials/material-no/1.6228 "Material no.: 1.6228") - [*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=336dd235-74a9-4c97-ae8c-274b809711d3&designation=50de60d5-9e64-4c64-884f-197d4eb5e2fa "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/afnor/1-5ni355.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [DIN / EN 15NiMn6 This grade’s own name](/materials/din-en/15nimn6 "DIN / EN 15NiMn6") ## 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 · 2 - [14NiMn6 This grade’s own name Withdrawn](/materials/din-en/14nimn6 "DIN / EN 14NiMn6") - [15NiMn6 This grade’s own name](/materials/din-en/15nimn6 "DIN / EN 15NiMn6") AFNOR France · 1 - **1.5Ni355 Indicative** 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 Si Iron — the balance, never listed by a standard — 96.7 % Ni — 1.5 % Mn — 1.2 % Si — 0.4 % Traces & impurities · 0.3 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | ≤ 0.18 | | Si | ≤ 0.35 | | Mn | 0.8–1.5 | | P | 0.025 | | S | 0.015 | | Ni | 1.3–1.7 | | V | ≤ 0.05 | Carbon Silicon Manganese Phosphorus Sulfur Nickel Vanadium 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 | ≤0,18 | — | 0.180 | Max | | Si | ≤0,35 | — | 0.350 | Max | | P | 0,025 | 0.025 | 0.025 | Exact | | S | 0,015 | 0.015 | 0.015 | Exact | | V | ≤0,05 | — | 0.050 | Max | | Mn | 0,80-1,50 | 0.800 | 1.500 | Range | | Ni | 1,30-1,70 | 1.300 | 1.700 | 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: Cr, 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. ## Properties by condition 1 conditions · 5 values By thickness**Normalized** source `steelnumber` | Thickness mm | ReH N/mm² | Rm N/mm² | A% | |---|---|---|---| | ≤ 30 | 355 | — | — | | 30 – 50 | 345 | — | — | | 50 – 80 | 335 | — | — | | ≤ 80 | — | 470 – 640 | 20 – 22 | Every figure holds only for the condition on its own row. Values are never merged across conditions or across sources, never averaged, and never interpolated between two rows. An em dash means no value on file — never zero. Figures are converted to the unit in the column header; the source’s own wording is kept and shown where the two differ. ## 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=336dd235-74a9-4c97-ae8c-274b809711d3&designation=50de60d5-9e64-4c64-884f-197d4eb5e2fa "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/afnor/1-5ni355.pdf "Datasheet as PDF")