--- title: "J91171 — GX12Cr12, 38 equivalent designations" description: "J91171 in UNS: material number 1.4011, also listed as GX12Cr12. It is a material in the category Others. Designations recorded for this grade: 38." canonical: https://steelequivalents.com/materials/uns/j91171 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/uns/j91171.md cs: https://steelequivalents.com/cs/materiály/uns/j91171.md de: https://steelequivalents.com/de/werkstoffe/uns/j91171.md es: https://steelequivalents.com/es/materiales/uns/j91171.md fr: https://steelequivalents.com/fr/matériaux/uns/j91171.md hu: https://steelequivalents.com/hu/anyagok/uns/j91171.md it: https://steelequivalents.com/it/materiali/uns/j91171.md nl: https://steelequivalents.com/nl/materialen/uns/j91171.md pl: https://steelequivalents.com/pl/materiały/uns/j91171.md pt: https://steelequivalents.com/pt/materiais/uns/j91171.md ru: https://steelequivalents.com/ru/материалы/uns/j91171.md tr: https://steelequivalents.com/tr/malzemeler/uns/j91171.md zh: https://steelequivalents.com/zh/材料/uns/j91171.md ja: https://steelequivalents.com/ja/材料/uns/j91171.md ar: https://steelequivalents.com/ar/المواد/uns/j91171.md ko: https://steelequivalents.com/ko/재료/uns/j91171.md pt-br: https://steelequivalents.com/pt-br/materiais/uns/j91171.md hi: https://steelequivalents.com/hi/सामग्री/uns/j91171.md content_hash: sha256:9897bb5927e46af7e496db19976468e8833ddb663f3322f6eead9ef7d8c32771 generated: 2026-09-22 --- > **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/uns/j91171 > Canonical URL: https://steelequivalents.com/materials/uns/j91171 > 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. UNS · United States · 38 designations # J91171 J91171 is a designation in UNS for the material held under material number 1.4011, also listed as GX12Cr12. It is a material in the category Others. We list 38 designations recorded for this grade, in the standards DIN / EN, UNS, AISI / SAE, ASTM, AFNOR, SAE AMS, JIS and ABNT NBR. - [*Material no.* **1.4011**](/materials/material-no/1.4011 "Material no.: 1.4011") - [*Category* **Others · 1754 grades**](/categories/others "Category: Others · 1754 grades") - *Designations* **38** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=7b8e3eb8-96a6-416f-9dfe-cd2123e94b42&designation=d9027d13-9657-4a67-bd86-d417ec4c41b0 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/uns/j91171.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [DIN / EN GX12Cr12 This grade’s own name](/materials/din-en/gx12cr12 "DIN / EN GX12Cr12") - [UNS J91150 This grade’s own name · 2 grades on that route](/materials/uns/j91150 "UNS J91150") ## About Others These are miscellaneous metallic alloys that do not fit a more specific material family and may be based on iron, nickel, cobalt, copper or other alloy systems. They are selected for applications requiring particular combinations of strength, hardness, toughness, wear resistance or resistance to demanding service conditions. This describes the material class as a whole. Always confirm the individual grade against the standard before ordering. ## Also known as 38 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 - [GX12Cr12 This grade’s own name](/materials/din-en/gx12cr12 "DIN / EN GX12Cr12") - [GX12Cr13 This grade’s own name Withdrawn](/materials/din-en/gx12cr13 "DIN / EN GX12Cr13") UNS United States · 5 - [J91150 This grade’s own name](/materials/uns/j91150 "UNS J91150") - [J91151 This grade’s own name](/materials/uns/j91151 "UNS J91151") - **J91171 This grade’s own name** - [J91201 This grade’s own name](/materials/uns/j91201 "UNS J91201") - [S43000 Indicative](/materials/uns/s43000 "UNS S43000") AISI / SAE United States · 6 - [420 Indicative](/materials/is/420 "AISI / SAE 420") - [430 Indicative](/materials/aisi-sae/430 "AISI / SAE 430") - [51430 Indicative](/materials/aisi-sae/51430 "AISI / SAE 51430") - [J91150 Indicative](/materials/uns/j91150 "AISI / SAE J91150") - [J91151 Indicative](/materials/uns/j91151 "AISI / SAE J91151") - **J91171 Indicative** ASTM United States · 19 - [A1012 Indicative](/materials/astm/a1012 "ASTM A1012") - [A182 Indicative](/materials/aisi-sae/a182 "ASTM A182") - [A240 Indicative](/materials/astm/a240 "ASTM A240") - [A268 Indicative](/materials/astm/a268 "ASTM A268") - [A276 Indicative](/materials/astm/a276 "ASTM A276") - [A314 Indicative](/materials/astm/a314 "ASTM A314") - [A473 Indicative](/materials/astm/a473 "ASTM A473") - [A479 Indicative](/materials/astm/a479 "ASTM A479") - [A493 Indicative](/materials/astm/a493 "ASTM A493") - [A511 Indicative](/materials/astm/a511 "ASTM A511") - [A554 Indicative](/materials/astm/a554 "ASTM A554") - [A580 Indicative](/materials/astm/a580 "ASTM A580") - [A815 Indicative](/materials/astm/a815 "ASTM A815") - [F2215 Indicative](/materials/astm/f2215 "ASTM F2215") - [F2281 Indicative](/materials/astm/f2281 "ASTM F2281") - [F593 Indicative](/materials/astm/f593 "ASTM F593") - [F594 Indicative](/materials/astm/f594 "ASTM F594") - [F738 Indicative](/materials/astm/f738 "ASTM F738") - [F836 Indicative](/materials/astm/f836 "ASTM F836") AFNOR France · 1 - [Z12 C 13 M Indicative](/materials/afnor/z12c13-m "AFNOR Z12 C 13 M") SAE AMS United States / Aerospace · 2 - [5503 Indicative](/materials/ams/5503 "SAE AMS 5503") - [5627 Indicative](/materials/ams/5627 "SAE AMS 5627") JIS Japan · 2 - [SCS 1 Indicative](/materials/jis/scs1 "JIS SCS 1") - [SCS 1X Indicative](/materials/jis/scs1x "JIS SCS 1X") ABNT NBR Brazil · 1 - [430 Indicative](/materials/aisi-sae/430 "ABNT NBR 430") 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 Si Mn Iron — the balance, never listed by a standard — 83.8 % Cr — 12.5 % Si — 1 % Mn — 1 % Traces & impurities · 1.7 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | ≤ 0.15 | | Si | ≤ 1 | | Mn | ≤ 1 | | P | 0.035 | | S | 0.025 | | Cr | 11.5–13.5 | | Mo | ≤ 0.5 | | Ni | 1 | Carbon Silicon Manganese Phosphorus Sulfur Chromium Molybdenum 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 | ≤0,15 | — | 0.150 | Max | | Si | ≤1,00 | — | 1.000 | Max | | P | 0,035 | 0.035 | 0.035 | Exact | | S | 0,025 | 0.025 | 0.025 | Exact | | Cr | 11,5-13,5 | 11.500 | 13.500 | Range | | Mn | ≤1,00 | — | 1.000 | Max | | Ni | 1 | 1.000 | 1.000 | Exact | | Mo | ≤0,50 | — | 0.500 | Max | 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. ## 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. [GX20CrMo13 1.4120 Cr 12,0-14,0 · Ni 1 - ΔCr 0.50 - ΔNi 0.00 - 3 designations](/materials/din-en/gx20crmo13 "GX20CrMo13")[X22CrMoNiS13-1 1.4121 Cr 12,0-14,0 · Ni 0,80-1,20 - ΔCr 0.50 - ΔNi 0.00 - 1 designations](/materials/din-en/x22crmonis13-1 "X22CrMoNiS13-1")[X24CrMoWV12-1 1.4936 Cr 11,2-12,8 · Ni 1 - ΔCr 0.50 - ΔNi 0.00 - 2 designations](/materials/din-en/x24crmowv12-1 "X24CrMoWV12-1")[X23CrMoWV12-1 1.4937 Cr 11,2-12,8 · Ni 1 - ΔCr 0.50 - ΔNi 0.00 - 2 designations](/materials/din-en/x23crmowv12-1 "X23CrMoWV12-1")[X8CrNi13-1 1.4018 Cr 11,7-14,3 · Ni 0,60-1,90 - ΔCr 0.50 - ΔNi 0.25 - 1 designations](/materials/din-en/x8crni13-1 "X8CrNi13-1")[GX23CrMoV12-1 1.4931 Cr 11,3-12,2 · Ni 1 - ΔCr 0.75 - ΔNi 0.00 - 2 designations](/materials/din-en/gx23crmov12-1 "GX23CrMoV12-1") ## 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=7b8e3eb8-96a6-416f-9dfe-cd2123e94b42&designation=d9027d13-9657-4a67-bd86-d417ec4c41b0 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/uns/j91171.pdf "Datasheet as PDF")