--- title: "1.2063 — Tool steels for cold work" description: "1.2063 is the material number of the grade also listed as 145Cr6. Category: Tool steels for cold work. Designations recorded for this grade: 6." canonical: https://steelequivalents.com/materials/material-no/1.2063 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/material-no/1.2063.md cs: https://steelequivalents.com/cs/materiály/číslo-materiálu/1.2063.md de: https://steelequivalents.com/de/werkstoffe/werkstoff-nr/1.2063.md es: https://steelequivalents.com/es/materiales/número-de-material/1.2063.md fr: https://steelequivalents.com/fr/matériaux/numéro-de-matériau/1.2063.md hu: https://steelequivalents.com/hu/anyagok/anyagszám/1.2063.md it: https://steelequivalents.com/it/materiali/numero-materiale/1.2063.md nl: https://steelequivalents.com/nl/materialen/materiaalnummer/1.2063.md pl: https://steelequivalents.com/pl/materiały/numer-materiału/1.2063.md pt: https://steelequivalents.com/pt/materiais/número-do-material/1.2063.md ru: https://steelequivalents.com/ru/материалы/номер-материала/1.2063.md tr: https://steelequivalents.com/tr/malzemeler/malzeme-numarası/1.2063.md zh: https://steelequivalents.com/zh/材料/材料编号/1.2063.md ja: https://steelequivalents.com/ja/材料/材料番号/1.2063.md ar: https://steelequivalents.com/ar/المواد/رقم-المادة/1.2063.md ko: https://steelequivalents.com/ko/재료/재료번호/1.2063.md pt-br: https://steelequivalents.com/pt-br/materiais/número-do-material/1.2063.md hi: https://steelequivalents.com/hi/सामग्री/सामग्री-संख्या/1.2063.md content_hash: sha256:d01988e309fbb0ce5a55b75c211df060b2321fe5358428621f9d4e1c4b1c6171 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/material-no/1.2063 > Canonical URL: https://steelequivalents.com/materials/material-no/1.2063 > 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. Material number · Europe · 6 designations # 1.2063 1.2063 is the material number of the grade also listed as 145Cr6. It is a material in the category Tool steels for cold work. We list 6 designations recorded for this grade, in the standards DIN / EN, GOST, ČSN, SRPS and PN. - ***Material no.* **1.2063**** - [*Category* **Tool steels for cold work · 109 grades**](/categories/tool-steels-for-cold-work "Category: Tool steels for cold work · 109 grades") - *Designations* **6** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=3cc954c4-d679-4acc-a7bf-a2be047cfe7f "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/material-no/1.2063.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [DIN / EN 145Cr6 This grade’s own name](/materials/din-en/145cr6 "DIN / EN 145Cr6") ## About Tool steels for cold work Cold-work tool steels are high-strength tool materials designed for shaping, cutting and forming operations carried out without significant heating of the workpiece. They are characterised by high hardness, wear resistance and the ability to retain a sharp or precise working edge, making them suitable for dies, punches, cutting tools and other tooling exposed to repeated mechanical contact. This describes the material class as a whole. Always confirm the individual grade against the standard before ordering. ## Also known as 6 designations · 5 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 · 1 - [145Cr6 This grade’s own name](/materials/din-en/145cr6 "DIN / EN 145Cr6") GOST Russia / CIS · 2 - [12Ch1 Indicative](/materials/gost/12ch1 "GOST 12Ch1") - [12Х1 Indicative](/materials/gost/12kh1 "GOST 12Х1") ČSN Czechia · 1 - [19 422 Indicative](/materials/csn/19-422 "ČSN 19 422") SRPS Serbia · 1 - [Č.4840 Indicative](/materials/srps/c-4840 "SRPS Č.4840") PN Poland · 1 - [NC6 Indicative](/materials/pn/nc6 "PN NC6") Every designation on file is listed — no truncation, no “+ n more”. Each one is itself a route that leads back here. ## Chemical composition 6 elements on file · weight % What this alloy is Fe C Cr Mn Iron — the balance, never listed by a standard — 96.2 % C — 1.5 % Cr — 1.4 % Mn — 0.6 % Traces & impurities · 0.3 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | 1.4–1.6 | | Si | 0.15–0.3 | | Mn | 0.5–0.7 | | P | 0.035 | | S | 0.035 | | Cr | 1.3–1.5 | Carbon Silicon Manganese Phosphorus Sulfur Chromium 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 | 1,40-1,60 | 1.400 | 1.600 | Range | | Si | 0,15-0,30 | 0.150 | 0.300 | Range | | P | 0,035 | 0.035 | 0.035 | Exact | | S | 0,035 | 0.035 | 0.035 | Exact | | Cr | 1,30-1,50 | 1.300 | 1.500 | Range | | Mn | 0,50-0,70 | 0.500 | 0.700 | 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, 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 1.2, a shared category, and a published range for Cr / Mn 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. [45SiCrV6 1.2249 Cr 1,30-1,60 · Mn 0,50-0,70 - ΔCr 0.05 - ΔMn 0.00 - 2 designations](/materials/din-en/45sicrv6 "45SiCrV6")[45NiCr6 1.2710 Cr 1,20-1,50 · Mn 0,50-0,80 - ΔCr 0.05 - ΔMn 0.05 - 1 designations](/materials/din-en/45nicr6 "45NiCr6")[27CrMoV6-12 1.2353 Cr 1,30-1,50 · Mn 0,30-0,70 - ΔCr 0.00 - ΔMn 0.10 - 1 designations](/materials/din-en/27crmov6-12 "27CrMoV6-12")[45NiCrMoV16-6 1.2746 Cr 1,40-1,60 · Mn 0,60-0,80 - ΔCr 0.10 - ΔMn 0.10 - 1 designations](/materials/din-en/45nicrmov16-6 "45NiCrMoV16-6")[38SiCrV6 1.2248 Cr 1,30-1,60 · Mn 0,30-0,50 - ΔCr 0.05 - ΔMn 0.20 - 1 designations](/materials/din-en/38sicrv6 "38SiCrV6")[90CrSi5 1.2108 Cr 1,10-1,30 · Mn 0,60-0,80 - ΔCr 0.20 - ΔMn 0.10 - 1 designations](/materials/din-en/90crsi5 "90CrSi5") ## 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=3cc954c4-d679-4acc-a7bf-a2be047cfe7f "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/material-no/1.2063.pdf "Datasheet as PDF")