--- title: "16N6 — Low-temperature structural steels" description: "16N6 in AFNOR: material number 1.5622, also listed as 14Ni6. Category: Low-temperature structural steels. Designations recorded for this grade: 17." canonical: https://steelequivalents.com/materials/afnor/16n6 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/afnor/16n6.md cs: https://steelequivalents.com/cs/materiály/afnor/16n6.md de: https://steelequivalents.com/de/werkstoffe/afnor/16n6.md es: https://steelequivalents.com/es/materiales/afnor/16n6.md fr: https://steelequivalents.com/fr/matériaux/afnor/16n6.md hu: https://steelequivalents.com/hu/anyagok/afnor/16n6.md it: https://steelequivalents.com/it/materiali/afnor/16n6.md nl: https://steelequivalents.com/nl/materialen/afnor/16n6.md pl: https://steelequivalents.com/pl/materiały/afnor/16n6.md pt: https://steelequivalents.com/pt/materiais/afnor/16n6.md ru: https://steelequivalents.com/ru/материалы/afnor/16n6.md tr: https://steelequivalents.com/tr/malzemeler/afnor/16n6.md zh: https://steelequivalents.com/zh/材料/afnor/16n6.md ja: https://steelequivalents.com/ja/材料/afnor/16n6.md ar: https://steelequivalents.com/ar/المواد/afnor/16n6.md ko: https://steelequivalents.com/ko/재료/afnor/16n6.md pt-br: https://steelequivalents.com/pt-br/materiais/afnor/16n6.md hi: https://steelequivalents.com/hi/सामग्री/afnor/16n6.md content_hash: sha256:6117ca8b4c4512a50a2476fd7097849e8d66a4fc0c127e2745ac86133f3a257e 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/afnor/16n6 > Canonical URL: https://steelequivalents.com/materials/afnor/16n6 > 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 · 17 designations # 16N6 16N6 is a designation in AFNOR for the material held under material number 1.5622, also listed as 14Ni6. It is a material in the category Low-temperature structural steels. We list 17 designations recorded for this grade, in the standards DIN / EN, UNS, AISI / SAE, AFNOR, UNE, UNI and SRPS. - [*Material no.* **1.5622**](/materials/material-no/1.5622 "Material no.: 1.5622") - [*Category* **Low-temperature structural steels · 55 grades**](/categories/low-temperature-structural-steels "Category: Low-temperature structural steels · 55 grades") - *Designations* **17** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=4dbb7b1b-6cfd-4ffc-bcc6-5aa726937f5e&designation=febc49b7-8cb4-454f-bbf2-5d3054f7cf48 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/afnor/16n6.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [DIN / EN 14Ni6 This grade’s own name](/materials/din-en/14ni6 "DIN / EN 14Ni6") - [UNS K 22103 This grade’s own name](/materials/uns/k22103 "UNS K 22103") ## 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 17 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 · 2 - [1.5622 Indicative](/materials/material-no/1.5622 "DIN / EN 1.5622") - [14Ni6 This grade’s own name](/materials/din-en/14ni6 "DIN / EN 14Ni6") UNS United States · 5 - [K 21703 Indicative](/materials/uns/k21703 "UNS K 21703") - [K 22103 This grade’s own name](/materials/uns/k22103 "UNS K 22103") - [K13050 Indicative](/materials/uns/k13050 "UNS K13050") - [K21703 Indicative](/materials/uns/k21703 "UNS K21703") - [K22103 This grade’s own name](/materials/uns/k22103 "UNS K22103") AISI / SAE United States · 2 - [A350-LF5 Indicative](/materials/aisi-sae/a350-lf5 "AISI / SAE A350-LF5") - [ASTM A350LF5 Indicative](/materials/aisi-sae/astm-a350lf5 "AISI / SAE ASTM A350LF5") AFNOR France · 3 - [15N6 Indicative](/materials/afnor/15n6 "AFNOR 15N6") - [15Ni6 Indicative](/materials/afnor/15ni6 "AFNOR 15Ni6") - **16N6 Indicative** UNE Spain · 3 - [15Ni6 Indicative](/materials/afnor/15ni6 "UNE 15Ni6") - [F.2641 Indicative](/materials/une/f-2641 "UNE F.2641") - [F.2641 -15 Ni 6 Indicative](/materials/une/f-2641-15-ni-6 "UNE F.2641 -15 Ni 6") UNI Italy · 1 - [14Ni6 Indicative](/materials/din-en/14ni6 "UNI 14Ni6") SRPS Serbia · 1 - [Č.5120 Indicative](/materials/srps/c-5120 "SRPS Č.5120") Every designation on file is listed — no truncation, no “+ n more”. Each one is itself a route that leads back here. ## Chemical composition 6 elements on file · weight % What this alloy is Fe Ni Mn Si Iron — the balance, never listed by a standard — 97.6 % Ni — 1.5 % Mn — 0.4 % Si — 0.2 % 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 | 0.1–0.35 | | Mn | 0.3–0.6 | | P | 0.035 | | S | 0.035 | | Ni | 1.3–1.6 | Carbon Silicon Manganese Phosphorus Sulfur 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 | ≤0,18 | — | 0.180 | Max | | Si | 0,10-0,35 | 0.100 | 0.350 | Range | | P | 0,035 | 0.035 | 0.035 | Exact | | S | 0,035 | 0.035 | 0.035 | Exact | | Mn | 0,30-0,60 | 0.300 | 0.600 | Range | | Ni | 1,30-1,60 | 1.300 | 1.600 | 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. ## 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. [34Ni5 1.5620 Ni 1,20-1,50 · Mn 0,30-0,50 - ΔNi 0.10 - ΔMn 0.05 - 1 designations](/materials/din-en/34ni5 "34Ni5")[G10Ni6 1.5621 Ni 1,30-1,80 · Mn 0,50-0,80 - ΔNi 0.10 - ΔMn 0.20 - 2 designations](/materials/din-en/g10ni6 "G10Ni6")[24Ni4 1.5613 Ni 1,00-1,30 · Mn 0,60-0,80 - ΔNi 0.30 - ΔMn 0.25 - 1 designations](/materials/din-en/24ni4 "24Ni4") ## 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=4dbb7b1b-6cfd-4ffc-bcc6-5aa726937f5e&designation=febc49b7-8cb4-454f-bbf2-5d3054f7cf48 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/afnor/16n6.pdf "Datasheet as PDF")