--- title: "A2317 — Low-temperature structural steels" description: "A2317 in AISI / SAE: material number 1.5639, also listed as 16Ni14. Category: Low-temperature structural steels. Designations recorded for this grade: 21." canonical: https://steelequivalents.com/materials/aisi-sae/a2317 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/aisi-sae/a2317.md cs: https://steelequivalents.com/cs/materiály/aisi-sae/a2317.md de: https://steelequivalents.com/de/werkstoffe/aisi-sae/a2317.md es: https://steelequivalents.com/es/materiales/aisi-sae/a2317.md fr: https://steelequivalents.com/fr/matériaux/aisi-sae/a2317.md hu: https://steelequivalents.com/hu/anyagok/aisi-sae/a2317.md it: https://steelequivalents.com/it/materiali/aisi-sae/a2317.md nl: https://steelequivalents.com/nl/materialen/aisi-sae/a2317.md pl: https://steelequivalents.com/pl/materiały/aisi-sae/a2317.md pt: https://steelequivalents.com/pt/materiais/aisi-sae/a2317.md ru: https://steelequivalents.com/ru/материалы/aisi-sae/a2317.md tr: https://steelequivalents.com/tr/malzemeler/aisi-sae/a2317.md zh: https://steelequivalents.com/zh/材料/aisi-sae/a2317.md ja: https://steelequivalents.com/ja/材料/aisi-sae/a2317.md ar: https://steelequivalents.com/ar/المواد/aisi-sae/a2317.md ko: https://steelequivalents.com/ko/재료/aisi-sae/a2317.md pt-br: https://steelequivalents.com/pt-br/materiais/aisi-sae/a2317.md hi: https://steelequivalents.com/hi/सामग्री/aisi-sae/a2317.md content_hash: sha256:b19824ed7f774b21fa8671199d5fd265a2af5d094a4be8061089435a36761caa 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/aisi-sae/a2317 > Canonical URL: https://steelequivalents.com/materials/aisi-sae/a2317 > 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. AISI / SAE · United States · 21 designations # A2317 A2317 is a designation in AISI / SAE for the material held under material number 1.5639, also listed as 16Ni14. It is a material in the category Low-temperature structural steels. We list 21 designations recorded for this grade, in the standards DIN / EN, UNS, AISI / SAE, BS, AFNOR, UNE, ISO, JIS, GB and MSZ. - [*Material no.* **1.5639**](/materials/material-no/1.5639 "Material no.: 1.5639") - [*Category* **Low-temperature structural steels · 55 grades**](/categories/low-temperature-structural-steels "Category: Low-temperature structural steels · 55 grades") - *Designations* **21** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=aa4d9d3c-b332-4df9-8397-98b4a0d13abc&designation=c368fd9b-e6da-4c70-84dc-aca70e009512 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/aisi-sae/a2317.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [UNS K31718 This grade’s own name · 2 grades on that route](/materials/uns/k31718 "UNS K31718") ## 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 21 designations · 10 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 - [16Ni14 This grade’s own name Withdrawn](/materials/din-en/16ni14 "DIN / EN 16Ni14") UNS United States · 6 - [K31718 This grade’s own name](/materials/uns/k31718 "UNS K31718") - [K31918 This grade’s own name](/materials/uns/k31918 "UNS K31918") - [K32018 This grade’s own name](/materials/uns/k32018 "UNS K32018") - [K32025 This grade’s own name](/materials/uns/k32025 "UNS K32025") - [K32026 This grade’s own name](/materials/uns/k32026 "UNS K32026") - [K41583 Indicative](/materials/uns/k41583 "UNS K41583") AISI / SAE United States · 1 - **A2317 This grade’s own name** BS United Kingdom · 2 - [BS1501 Gr 503 Indicative](/materials/bs/bs1501-gr-503 "BS BS1501 Gr 503") - [BS3603 gr. 503LT Indicative](/materials/bs/bs3603-gr-503lt "BS BS3603 gr. 503LT") AFNOR France · 1 - [Z10N05 Indicative](/materials/din-en/z10n05 "AFNOR Z10N05") UNE Spain · 2 - [A-152 Indicative](/materials/une/a-152 "UNE A-152") - [F-152 Indicative](/materials/une/f-152 "UNE F-152") ISO International · 1 - [X9Ni5 Indicative](/materials/iso/x9ni5 "ISO X9Ni5") JIS Japan · 4 - [G3127 gr. SL3N255 Indicative](/materials/jis/g3127-gr-sl3n255 "JIS G3127 gr. SL3N255") - [G3127 gr. SL3N440 Indicative](/materials/jis/g3127-gr-sl3n440 "JIS G3127 gr. SL3N440") - [G3127 gr. SL5N590 Indicative](/materials/jis/g3127-gr-sl5n590 "JIS G3127 gr. SL5N590") - [G3464 gr. STBL450 Indicative](/materials/jis/g3464-gr-stbl450 "JIS G3464 gr. STBL450") GB China · 2 - [07Ni5DR Indicative](/materials/gb/07ni5dr "GB 07Ni5DR") - [08Ni3DR Indicative](/materials/gb/08ni3dr "GB 08Ni3DR") MSZ Hungary · 1 - [AH80 Indicative](/materials/msz/ah80 "MSZ AH80") 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 — 95.6 % Ni — 3.5 % Mn — 0.4 % Si — 0.2 % Traces & impurities · 0.2 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | 0.12–0.19 | | Si | 0.1–0.35 | | Mn | 0.3–0.6 | | P | 0.035 | | S | 0.035 | | Ni | 3.2–3.8 | 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 | 0,12-0,19 | 0.120 | 0.190 | Range | | 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 | 3,20-3,80 | 3.200 | 3.800 | 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. [1.5637 1.5637 Ni 3,25-3,75 · Mn 0,30-0,80 - ΔNi 0.00 - ΔMn 0.10 - 31 designations](/materials/material-no/1.5637 "1.5637")[G9Ni14 1.5638 Ni 3,00-4,00 · Mn 0,50-0,80 - ΔNi 0.00 - ΔMn 0.20 - 4 designations](/materials/din-en/g9ni14 "G9Ni14") ## 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=aa4d9d3c-b332-4df9-8397-98b4a0d13abc&designation=c368fd9b-e6da-4c70-84dc-aca70e009512 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/aisi-sae/a2317.pdf "Datasheet as PDF")