--- title: "316 S 51 — High-temperature steels" description: "316 S 51 in BS: material number 1.4919, also listed as X6CrNiMo17-13. Category: High-temperature steels. Designations recorded for this grade: 13." canonical: https://steelequivalents.com/materials/bs/316-s-51 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/bs/316-s-51.md cs: https://steelequivalents.com/cs/materiály/bs/316-s-51.md de: https://steelequivalents.com/de/werkstoffe/bs/316-s-51.md es: https://steelequivalents.com/es/materiales/bs/316-s-51.md fr: https://steelequivalents.com/fr/matériaux/bs/316-s-51.md hu: https://steelequivalents.com/hu/anyagok/bs/316-s-51.md it: https://steelequivalents.com/it/materiali/bs/316-s-51.md nl: https://steelequivalents.com/nl/materialen/bs/316-s-51.md pl: https://steelequivalents.com/pl/materiały/bs/316-s-51.md pt: https://steelequivalents.com/pt/materiais/bs/316-s-51.md ru: https://steelequivalents.com/ru/материалы/bs/316-s-51.md tr: https://steelequivalents.com/tr/malzemeler/bs/316-s-51.md zh: https://steelequivalents.com/zh/材料/bs/316-s-51.md ja: https://steelequivalents.com/ja/材料/bs/316-s-51.md ar: https://steelequivalents.com/ar/المواد/bs/316-s-51.md ko: https://steelequivalents.com/ko/재료/bs/316-s-51.md pt-br: https://steelequivalents.com/pt-br/materiais/bs/316-s-51.md hi: https://steelequivalents.com/hi/सामग्री/bs/316-s-51.md content_hash: sha256:bc211379f68eb7b1a781df51103f12e1d8409845230c483815b374f1aa65b674 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/bs/316-s-51 > Canonical URL: https://steelequivalents.com/materials/bs/316-s-51 > 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. BS · United Kingdom · 13 designations # 316 S 51 316 S 51 is a designation in BS for the material held under material number 1.4919, also listed as X6CrNiMo17-13. It is a material in the category High-temperature steels. We list 13 designations recorded for this grade, in the standards DIN / EN, UNS, AISI / SAE, BS, AFNOR, JIS, ČSN and STN. - [*Material no.* **1.4919**](/materials/material-no/1.4919 "Material no.: 1.4919") - [*Category* **High-temperature steels · 40 grades**](/categories/high-temperature-steels "Category: High-temperature steels · 40 grades") - *Designations* **13** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=846d5f95-7d9a-4faf-88d0-fe6f4983761b&designation=d04188bb-c490-4cd1-9ddb-5dce0d9b7e09 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/bs/316-s-51.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [DIN / EN X6CrNiMoB17-12-2 This grade’s own name](/materials/din-en/x6crnimob17-12-2 "DIN / EN X6CrNiMoB17-12-2") - [UNS S31609 This grade’s own name · 2 grades on that route](/materials/uns/s31609 "UNS S31609") - [AISI / SAE 316H This grade’s own name · 3 grades on that route](/materials/aisi-sae/316h "AISI / SAE 316H") ## About High-temperature steels High-temperature steels are steels designed to retain useful strength and structural stability during exposure to elevated temperatures. Their alloying systems provide resistance to oxidation, creep and loss of mechanical properties during prolonged heating, making them suitable for furnace components, heat exchangers, boilers and other hot-service equipment. This describes the material class as a whole. Always confirm the individual grade against the standard before ordering. ## Also known as 13 designations · 8 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 - [X6CrNiMo17-13 This grade’s own name Withdrawn](/materials/din-en/x6crnimo17-13 "DIN / EN X6CrNiMo17-13") - [X6CrNiMoB17-12-2 This grade’s own name](/materials/din-en/x6crnimob17-12-2 "DIN / EN X6CrNiMoB17-12-2") UNS United States · 1 - [S31609 This grade’s own name](/materials/uns/s31609 "UNS S31609") AISI / SAE United States · 2 - [316H This grade’s own name](/materials/aisi-sae/316h "AISI / SAE 316H") - [S31609 Indicative](/materials/uns/s31609 "AISI / SAE S31609") BS United Kingdom · 2 - **316 S 51 Indicative** - [316 S 53 Indicative](/materials/bs/316-s-53 "BS 316 S 53") AFNOR France · 1 - [Z6CND17-13B Indicative](/materials/afnor/z6cnd17-13b "AFNOR Z6CND17-13B") JIS Japan · 3 - [SUS 316HFB Indicative](/materials/jis/sus316hfb "JIS SUS 316HFB") - [SUS 316HTB Indicative](/materials/jis/sus316htb "JIS SUS 316HTB") - [SUS 316HTP Indicative](/materials/jis/sus316htp "JIS SUS 316HTP") ČSN Czechia · 1 - [17341 Indicative](/materials/csn/17341 "ČSN 17341") STN Slovakia · 1 - [17 341 Indicative](/materials/csn/17341 "STN 17 341") Every designation on file is listed — no truncation, no “+ n more”. Each one is itself a route that leads back here. ## Chemical composition 10 elements on file · weight % What this alloy is Fe Mo Mn C Iron — the balance, never listed by a standard — 95.6 % Mo — 2.3 % Mn — 2 % C — 0.1 % Traces & impurities · 0.1 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | 0.04–0.08 | | Si | ≤0,75\\n(≤1,00) | | Mn | ≤ 2 | | P | 0.035 | | S | 0.015 | | Cr | 16,0-18,0\\n(16,5-18,5) | | Mo | 2–2.5 | | Ni | 12,0-14,0\\n(10,0-13,0) | | N | 0,11\\n(0,10) | | B | 0.0015–0.005 | Carbon Silicon Manganese Phosphorus Sulfur Chromium Molybdenum Nickel Nitrogen Boron 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 | |---|---|---|---|---| | B | 0,0015-0,0050 | 0.002 | 0.005 | Range | | C | 0,04-0,08 | 0.040 | 0.080 | Range | | N | 0,11\\n(0,10) | — | — | No numeric bound | | Si | ≤0,75\\n(≤1,00) | — | — | No numeric bound | | P | 0,035 | 0.035 | 0.035 | Exact | | S | 0,015 | 0.015 | 0.015 | Exact | | Cr | 16,0-18,0\\n(16,5-18,5) | — | — | No numeric bound | | Mn | ≤2,00 | — | 2.000 | Max | | Ni | 12,0-14,0\\n(10,0-13,0) | — | — | No numeric bound | | Mo | 2,00-2,50 | 2.000 | 2.500 | 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: Si, Ni, Cr. ## 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 1.4, a shared category, and a published range for Mo / 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. [X3CrNiMoBN17-13-3 1.4910 Mo 2,00-3,00 · Mn ≤2,00 - ΔMo 0.25 - ΔMn 0.00 - 2 designations](/materials/din-en/x3crnimobn17-13-3 "X3CrNiMoBN17-13-3")[X40CrNiCoNb13-13 1.4960 Mo 1,80-2,20 · Mn ≤2,00 - ΔMo 0.25 - ΔMn 0.00 - 1 designations](/materials/din-en/x40crniconb13-13 "X40CrNiCoNb13-13")[X8CrNiMoNb16-16 1.4981 Mo 1,60-2,00 · Mn ≤1,50 - ΔMo 0.45 - ΔMn 0.25 - 1 designations](/materials/din-en/x8crnimonb16-16 "X8CrNiMoNb16-16")[X7CrNiMoBNb16-16 1.4986 Mo 1,60-2,00 · Mn ≤1,50 - ΔMo 0.45 - ΔMn 0.25 - 2 designations](/materials/din-en/x7crnimobnb16-16 "X7CrNiMoBNb16-16")[X12CrCoNi21-20 1.4971 Mo 2,50-3,50 · Mn ≤2,00 - ΔMo 0.75 - ΔMn 0.00 - 8 designations](/materials/din-en/x12crconi21-20 "X12CrCoNi21-20")[X12CrNiMoV12-3 1.4938 Mo 1,50-2,00 · Mn 0,40-0,90 - ΔMo 0.50 - ΔMn 0.35 - 7 designations](/materials/din-en/x12crnimov12-3 "X12CrNiMoV12-3") ## 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=846d5f95-7d9a-4faf-88d0-fe6f4983761b&designation=d04188bb-c490-4cd1-9ddb-5dce0d9b7e09 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/bs/316-s-51.pdf "Datasheet as PDF")