--- title: "12Cr12Ni2 — composition, equivalents and standards" description: "12Cr12Ni2: 1 equivalent designations across 1 standards, with the recorded chemical composition shown next to the source text." canonical: https://steelequivalents.com/materials/gb/12cr12ni2 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/gb/12cr12ni2.md cs: https://steelequivalents.com/cs/materiály/gb/12cr12ni2.md de: https://steelequivalents.com/de/werkstoffe/gb/12cr12ni2.md es: https://steelequivalents.com/es/materiales/gb/12cr12ni2.md fr: https://steelequivalents.com/fr/matériaux/gb/12cr12ni2.md hu: https://steelequivalents.com/hu/anyagok/gb/12cr12ni2.md it: https://steelequivalents.com/it/materiali/gb/12cr12ni2.md nl: https://steelequivalents.com/nl/materialen/gb/12cr12ni2.md pl: https://steelequivalents.com/pl/materiały/gb/12cr12ni2.md pt: https://steelequivalents.com/pt/materiais/gb/12cr12ni2.md ru: https://steelequivalents.com/ru/материалы/gb/12cr12ni2.md tr: https://steelequivalents.com/tr/malzemeler/gb/12cr12ni2.md zh: https://steelequivalents.com/zh/材料/gb/12cr12ni2.md ja: https://steelequivalents.com/ja/材料/gb/12cr12ni2.md ar: https://steelequivalents.com/ar/المواد/gb/12cr12ni2.md ko: https://steelequivalents.com/ko/재료/gb/12cr12ni2.md pt-br: https://steelequivalents.com/pt-br/materiais/gb/12cr12ni2.md hi: https://steelequivalents.com/hi/सामग्री/gb/12cr12ni2.md content_hash: sha256:e13a5b8c96472c6940e052113cf5e3d6c6a0b89b64147d2d4abfc7c5061aed7e 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/gb/12cr12ni2 > Canonical URL: https://steelequivalents.com/materials/gb/12cr12ni2 > 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. GB · China · 1 designation # 12Cr12Ni2 12Cr12Ni2 is a grade designated under GB. Its recorded composition includes C ≤ 0.15%, Si ≤ 1%, Cr 11.5–13.5%, Mn ≤ 1% and Ni 1.25–2.5%. No cross-standard equivalents are recorded for this grade yet. - *Designations* **1** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=1e200ef4-c846-49e3-be89-154c2baef01a&designation=aacae224-359d-42c5-9553-79856518400a "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/gb/12cr12ni2.pdf "Datasheet as PDF") ## Chemical composition 7 elements on file · weight % What this alloy is Fe Cr Ni Si Iron — the balance, never listed by a standard — 83.1 % Cr — 12.5 % Ni — 1.9 % Si — 1 % Traces & impurities · 1.5 % 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 | ≤ 0.04 | | S | ≤ 0.3 — Unusual | | Cr | 11.5–13.5 | | Ni | 1.25–2.5 | Carbon Silicon Manganese Phosphorus Sulfur Chromium 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 | — | 1.000 | Max | | P | ≤0.04 | — | 0.040 | Max | | S | ≤0.3 | — | 0.300 | Max | | Cr | 11.5-13.5 | 11.500 | 13.500 | Range | | Mn | ≤1 | — | 1.000 | Max | | Ni | 1.25-2.5 | 1.250 | 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: Mo. ## Physical & mechanical properties 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. ## 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=1e200ef4-c846-49e3-be89-154c2baef01a&designation=aacae224-359d-42c5-9553-79856518400a "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/gb/12cr12ni2.pdf "Datasheet as PDF")