--- title: "X6CrNiTiB18-10 — High-temperature steels" description: "X6CrNiTiB18-10: 5 equivalent designations across 4 standards, with the recorded chemical composition shown next to the source text." canonical: https://steelequivalents.com/materials/din-en/x6crnitib18-10 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/din-en/x6crnitib18-10.md cs: https://steelequivalents.com/cs/materiály/din-en/x6crnitib18-10.md de: https://steelequivalents.com/de/werkstoffe/din-en/x6crnitib18-10.md es: https://steelequivalents.com/es/materiales/din-en/x6crnitib18-10.md fr: https://steelequivalents.com/fr/matériaux/din-en/x6crnitib18-10.md hu: https://steelequivalents.com/hu/anyagok/din-en/x6crnitib18-10.md it: https://steelequivalents.com/it/materiali/din-en/x6crnitib18-10.md nl: https://steelequivalents.com/nl/materialen/din-en/x6crnitib18-10.md pl: https://steelequivalents.com/pl/materiały/din-en/x6crnitib18-10.md pt: https://steelequivalents.com/pt/materiais/din-en/x6crnitib18-10.md ru: https://steelequivalents.com/ru/материалы/din-en/x6crnitib18-10.md tr: https://steelequivalents.com/tr/malzemeler/din-en/x6crnitib18-10.md zh: https://steelequivalents.com/zh/材料/din-en/x6crnitib18-10.md ja: https://steelequivalents.com/ja/材料/din-en/x6crnitib18-10.md ar: https://steelequivalents.com/ar/المواد/din-en/x6crnitib18-10.md ko: https://steelequivalents.com/ko/재료/din-en/x6crnitib18-10.md pt-br: https://steelequivalents.com/pt-br/materiais/din-en/x6crnitib18-10.md hi: https://steelequivalents.com/hi/सामग्री/din-en/x6crnitib18-10.md content_hash: sha256:ddf72ddeb797ef3d0e9099e2700c3c34ddca46acd26bc769a58afc7629e05e76 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/din-en/x6crnitib18-10 > Canonical URL: https://steelequivalents.com/materials/din-en/x6crnitib18-10 > 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. DIN / EN · Europe · 5 designations # X6CrNiTiB18-10 X6CrNiTiB18-10 is a material in the category [High-temperature steels](/categories/high-temperature-steels "High-temperature steels"), held under material number 1.4941. Its recorded composition includes C 0.04–0.08%, Si ≤ 1%, Cr 17–19%, Mn ≤ 2% and Ni 9–12%. We list 4 designations recorded for this grade, in the standards DIN / EN, UNS, AISI / SAE and AFNOR. Its recorded density is 7.85 g/cm³. - [*Material no.* **1.4941**](/materials/material-no/1.4941 "Material no.: 1.4941") - [*Category* **High-temperature steels · 40 grades**](/categories/high-temperature-steels "Category: High-temperature steels · 40 grades") - *Designations* **5** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=7aaeef67-7a6c-4e7f-8d8f-72d6c4be0c3a&designation=b85c8d58-2c58-43ed-8d1a-6b008913b01f "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/din-en/x6crnitib18-10.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [UNS S32109 This grade’s own name · 5 grades on that route](/materials/uns/s32109 "UNS S32109") - [AISI / SAE 321H This grade’s own name · 4 grades on that route](/materials/aisi-sae/321h "AISI / SAE 321H") ## 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 5 designations · 4 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 - **X6CrNiTiB18-10 This grade’s own name** - [X8CrNiTi18-10 This grade’s own name Withdrawn](/materials/din-en/x8crniti18-10 "DIN / EN X8CrNiTi18-10") UNS United States · 1 - [S32109 This grade’s own name](/materials/uns/s32109 "UNS S32109") AISI / SAE United States · 1 - [321H This grade’s own name](/materials/aisi-sae/321h "AISI / SAE 321H") AFNOR France · 1 - [Z6CNT18-10B Indicative](/materials/afnor/z6cnt18-10b "AFNOR Z6CNT18-10B") Every designation on file is listed — no truncation, no “+ n more”. Each one is itself a route that leads back here. ## Chemical composition 8 elements on file · weight % What this alloy is Fe Cr Ni Mn Iron — the balance, never listed by a standard — 68.4 % Cr — 18 % Ni — 10.5 % Mn — 2 % Traces & impurities · 1.1 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | 0.04–0.08 | | Si | ≤ 1 | | Mn | ≤ 2 | | P | 0.035 | | S | 0.015 | | Cr | 17–19 | | Ni | 9–12 | | B | 0.0015–0.005 | Carbon Silicon Manganese Phosphorus Sulfur Chromium Nickel 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 | | Si | ≤1,00 | — | 1.000 | Max | | P | 0,035 | 0.035 | 0.035 | Exact | | S | 0,015 | 0.015 | 0.015 | Exact | | Cr | 17,0-19,0 | 17.000 | 19.000 | Range | | Mn | ≤2,00 | — | 2.000 | Max | | Ni | 9,00-12,0 | 9.000 | 12.000 | Range | - ≥5xC(≤0,80) - ≥5xC(≤0,80) - ≥5xC(≤0,80) 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 1.4, a shared category, and a published range for Cr / Ni 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. [X3CrNiN18-11 1.4949 Cr 17,0-19,0 · Ni 9,50-11,5 - ΔCr 0.00 - ΔNi 0.00 - 2 designations](/materials/din-en/x3crnin18-11 "X3CrNiN18-11")[X7CrNiTi18-10 1.4940 Cr 17,0-19,0 · Ni 9,00-13,0 - ΔCr 0.00 - ΔNi 0.50 - 3 designations](/materials/din-en/x7crniti18-10 "X7CrNiTi18-10")[X6CrNi18-10 1.4948 Cr 17,0-19,0 · Ni 8,00-11,0 - ΔCr 0.00 - ΔNi 1.00 - 17 designations](/materials/din-en/x6crni18-10 "X6CrNi18-10")[X2CrNiMoN17-12-2 1.4909 Cr 17,0-18,0 · Ni 11,0-13,0 - ΔCr 0.50 - ΔNi 1.50 - 5 designations](/materials/din-en/x2crnimon17-12-2 "X2CrNiMoN17-12-2")[X3CrNiMoBN17-13-3 1.4910 Cr 16,0-18,0 · Ni 12,0-14,0 - ΔCr 1.00 - ΔNi 2.50 - 2 designations](/materials/din-en/x3crnimobn17-13-3 "X3CrNiMoBN17-13-3")[X8CrNiNb16-13 1.4961 Cr 15,0-17,0 · Ni 12,0-14,0 - ΔCr 2.00 - ΔNi 2.50 - 16 designations](/materials/din-en/x8crninb16-13 "X8CrNiNb16-13") ## 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=7aaeef67-7a6c-4e7f-8d8f-72d6c4be0c3a&designation=b85c8d58-2c58-43ed-8d1a-6b008913b01f "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/din-en/x6crnitib18-10.pdf "Datasheet as PDF")