--- title: "X12CrNiMoV12-3 — High-temperature steels" description: "X12CrNiMoV12-3: 7 equivalent designations across 3 standards, with the recorded chemical composition shown next to the source text." canonical: https://steelequivalents.com/materials/din-en/x12crnimov12-3 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/din-en/x12crnimov12-3.md cs: https://steelequivalents.com/cs/materiály/din-en/x12crnimov12-3.md de: https://steelequivalents.com/de/werkstoffe/din-en/x12crnimov12-3.md es: https://steelequivalents.com/es/materiales/din-en/x12crnimov12-3.md fr: https://steelequivalents.com/fr/matériaux/din-en/x12crnimov12-3.md hu: https://steelequivalents.com/hu/anyagok/din-en/x12crnimov12-3.md it: https://steelequivalents.com/it/materiali/din-en/x12crnimov12-3.md nl: https://steelequivalents.com/nl/materialen/din-en/x12crnimov12-3.md pl: https://steelequivalents.com/pl/materiały/din-en/x12crnimov12-3.md pt: https://steelequivalents.com/pt/materiais/din-en/x12crnimov12-3.md ru: https://steelequivalents.com/ru/материалы/din-en/x12crnimov12-3.md tr: https://steelequivalents.com/tr/malzemeler/din-en/x12crnimov12-3.md zh: https://steelequivalents.com/zh/材料/din-en/x12crnimov12-3.md ja: https://steelequivalents.com/ja/材料/din-en/x12crnimov12-3.md ar: https://steelequivalents.com/ar/المواد/din-en/x12crnimov12-3.md ko: https://steelequivalents.com/ko/재료/din-en/x12crnimov12-3.md pt-br: https://steelequivalents.com/pt-br/materiais/din-en/x12crnimov12-3.md hi: https://steelequivalents.com/hi/सामग्री/din-en/x12crnimov12-3.md content_hash: sha256:ae887e0c97d05d466e9061cd99e5110e2bbd15cd69b98cd9952a32b6b163424c 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/x12crnimov12-3 > Canonical URL: https://steelequivalents.com/materials/din-en/x12crnimov12-3 > 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 · 7 designations # X12CrNiMoV12-3 X12CrNiMoV12-3 is a material in the category [High-temperature steels](/categories/high-temperature-steels "High-temperature steels"), held under material number 1.4938. Its recorded composition includes C 0.08–0.15%, Cr 11–12.5%, Mn 0.4–0.9%, Ni 2–3% and Mo 1.5–2%. We list 6 designations recorded for this grade, in the standards DIN / EN, AFNOR and GB. Recorded mechanical properties include HB 311. Its recorded density is 7.85 g/cm³. - [*Material no.* **1.4938**](/materials/material-no/1.4938 "Material no.: 1.4938") - [*Category* **High-temperature steels · 40 grades**](/categories/high-temperature-steels "Category: High-temperature steels · 40 grades") - *Designations* **7** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=897583ca-7eb3-4dcf-a751-90c4d1f0923a&designation=0dd589eb-04f2-490f-819f-3f7ab057d277 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/din-en/x12crnimov12-3.pdf "Datasheet as PDF") ## 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 7 designations · 3 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 - [X11CrNiMoN12 This grade’s own name Withdrawn](/materials/din-en/x11crnimon12 "DIN / EN X11CrNiMoN12") - **X12CrNiMoV12-3 This grade’s own name** AFNOR France · 3 - [X13VD Indicative](/materials/afnor/x13vd "AFNOR X13VD") - [Z12CNDV12-02 Indicative](/materials/afnor/z12cndv12-02 "AFNOR Z12CNDV12-02") - [Z12CNDV12-03 Indicative](/materials/afnor/z12cndv12-03 "AFNOR Z12CNDV12-03") GB China · 2 - [10Cr12Ni3Mo2VN Indicative](/materials/gb/10cr12ni3mo2vn "GB 10Cr12Ni3Mo2VN") - [S47250 Indicative](/materials/gb/s47250 "GB S47250") 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 Cr Ni Mo Iron — the balance, never listed by a standard — 82.3 % Cr — 11.8 % Ni — 2.5 % Mo — 1.8 % Traces & impurities · 1.7 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | 0.08–0.15 | | Si | ≤ 0.5 | | Mn | 0.4–0.9 | | P | 0.025 | | S | 0.015 | | Cr | 11–12.5 | | Mo | 1.5–2 | | Ni | 2–3 | | V | 0.25–0.4 | | N | 0.02–0.04 | Carbon Silicon Manganese Phosphorus Sulfur Chromium Molybdenum Nickel Vanadium Nitrogen 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 | 0,08-0,15 | 0.080 | 0.150 | Range | | N | 0,020-0,040 | 0.020 | 0.040 | Range | | Si | ≤0,50 | — | 0.500 | Max | | P | 0,025 | 0.025 | 0.025 | Exact | | S | 0,015 | 0.015 | 0.015 | Exact | | V | 0,25-0,40 | 0.250 | 0.400 | Range | | Cr | 11,0-12,5 | 11.000 | 12.500 | Range | | Mn | 0,40-0,90 | 0.400 | 0.900 | Range | | Ni | 2,00-3,00 | 2.000 | 3.000 | Range | | Mo | 1,50-2,00 | 1.500 | 2.000 | 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 This grade's composition falls outside the published model's validated range (a low-alloy composition window), so no transformation temperature is predicted here. ## 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 · 1 values By delivery state**Soft annealed** source `steelnumber` | Delivery state | HB | |---|---| | Soft annealed | 311 | 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=897583ca-7eb3-4dcf-a751-90c4d1f0923a&designation=0dd589eb-04f2-490f-819f-3f7ab057d277 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/din-en/x12crnimov12-3.pdf "Datasheet as PDF")