--- title: "158Cr12MoV — composition, equivalents and standards" description: "158Cr12MoV: 1 equivalent designations across 1 standards, with the recorded chemical composition shown next to the source text." canonical: https://steelequivalents.com/materials/gb/158cr12mov language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/gb/158cr12mov.md cs: https://steelequivalents.com/cs/materiály/gb/158cr12mov.md de: https://steelequivalents.com/de/werkstoffe/gb/158cr12mov.md es: https://steelequivalents.com/es/materiales/gb/158cr12mov.md fr: https://steelequivalents.com/fr/matériaux/gb/158cr12mov.md hu: https://steelequivalents.com/hu/anyagok/gb/158cr12mov.md it: https://steelequivalents.com/it/materiali/gb/158cr12mov.md nl: https://steelequivalents.com/nl/materialen/gb/158cr12mov.md pl: https://steelequivalents.com/pl/materiały/gb/158cr12mov.md pt: https://steelequivalents.com/pt/materiais/gb/158cr12mov.md ru: https://steelequivalents.com/ru/материалы/gb/158cr12mov.md tr: https://steelequivalents.com/tr/malzemeler/gb/158cr12mov.md zh: https://steelequivalents.com/zh/材料/gb/158cr12mov.md ja: https://steelequivalents.com/ja/材料/gb/158cr12mov.md ar: https://steelequivalents.com/ar/المواد/gb/158cr12mov.md ko: https://steelequivalents.com/ko/재료/gb/158cr12mov.md pt-br: https://steelequivalents.com/pt-br/materiais/gb/158cr12mov.md hi: https://steelequivalents.com/hi/सामग्री/gb/158cr12mov.md content_hash: sha256:8ec0030e963f997093776c0a3ee1ec560b2953de57811da1add22a9915cb7c59 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/158cr12mov > Canonical URL: https://steelequivalents.com/materials/gb/158cr12mov > 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 # 158Cr12MoV 158Cr12MoV is a grade designated under GB. Its recorded composition includes C 1.45–1.7%, V 0.15–0.3%, Cr 11–12.5%, Mn ≤ 0.35% and Mo 0.4–0.6%. No cross-standard equivalents are recorded for this grade yet. Further recorded physical values: α 10.9 ·10⁻⁶/K. - *Designations* **1** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=45571621-b990-4a49-b7ce-f89822639ca8&designation=6194cf92-de51-4519-b9ae-303cfe9792d9 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/gb/158cr12mov.pdf "Datasheet as PDF") ## Chemical composition 8 elements on file · weight % What this alloy is Fe Cr C Mo Iron — the balance, never listed by a standard — 85.4 % Cr — 11.8 % C — 1.6 % Mo — 0.5 % Traces & impurities · 0.7 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | 1.45–1.7 — Unusual | | Si | ≤ 0.1 | | Mn | ≤ 0.35 | | P | ≤ 0.03 | | S | ≤ 0.025 | | Cr | 11–12.5 | | Mo | 0.4–0.6 | | V | 0.15–0.3 | Carbon Silicon Manganese Phosphorus Sulfur Chromium Molybdenum Vanadium 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 | 1.45-1.7 | 1.450 | 1.700 | Range | | Si | ≤0.1 | — | 0.100 | Max | | P | ≤0.03 | — | 0.030 | Max | | S | ≤0.025 | — | 0.025 | Max | | V | 0.15-0.3 | 0.150 | 0.300 | Range | | Cr | 11-12.5 | 11.000 | 12.500 | Range | | Mn | ≤0.35 | — | 0.350 | Max | | Mo | 0.4-0.6 | 0.400 | 0.600 | 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: Ni. ## Physical & mechanical properties Thermal expansion coefficient 10.9 10^-6/K 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. ## 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=45571621-b990-4a49-b7ce-f89822639ca8&designation=6194cf92-de51-4519-b9ae-303cfe9792d9 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/gb/158cr12mov.pdf "Datasheet as PDF")