Assab Steel Sheet,Plates,CARMO Cold Work Steel Sheet,Plate

Assab Steel Sheet/Plates CARMO Cold Work Steel Sheet/Plate Product Information -:- For detailed product information, please contact sales. -: Assab Steel Sheet/Plates CARMO Cold Work Steel Sheet/Plate Synonyms -:- For detailed product information, please contact sales. -:

Assab Steels CARMO Cold Work Steel Product Information -:- For detailed product information, please contact sales. -: ### **Assab Steels CARMO: Versatile Chromium-Molybdenum-Vanadium Cold Work Tool Steel** **Introduction** Assab Steels CARMO is a high-carbon, high-chromium, molybdenum, and vanadium alloyed cold work tool steel. It is manufactured using conventional casting and forging methods, resulting in a steel that offers an excellent balance of wear resistance, toughness, and through-hardening capability. CARMO is a versatile and widely used grade, particularly suitable for applications requiring a combination of good wear properties and resistance to chipping or pressure. It is known for its reliability and ease of heat treatment in standard workshop conditions. **Key Value Propositions:** * **Excellent Balance:** Provides a reliable compromise between wear resistance, toughness, and compressive strength. * **Good Through-Hardening:** Can be hardened to a significant depth, making it suitable for larger tools and components. * **Dimensional Stability:** Exhibits good stability during hardening, especially when compared to lower-alloyed steels. * **Machinability & Grindability:** Offers relatively good machinability in the annealed state and acceptable grindability in the hardened state for a high-carbon, high-chromium steel. * **Cost-Effectiveness:** A high-performance workhorse grade that provides a significant upgrade from standard tool steels without the premium cost of powder metallurgy grades. **International Standard Designations** * **Assab / Uddeholm:** CARMO * **AISI / ASTM A681:** D2 * **UNS:** T30402 * **European Norm (EN):** 1.2379 (X153CrMoV12) * **DIN:** X155CrVMo12-1 * **JIS:** SKD11 * **GB (China):** Cr12Mo1V1 **Chemical Composition (Typical Weight %)** | Element | Carbon (C) | Chromium (Cr) | Molybdenum (Mo) | Vanadium (V) | Silicon (Si) | Manganese (Mn) | | :--- | :---: | :---: | :---: | :---: | :---: | :---: | | **%** | 1.55 | 11.5 | 0.80 | 0.90 | 0.30 | 0.40 | *Note: This composition provides a high volume of hard chromium carbides for wear resistance, supplemented by vanadium carbides.* **Physical & Mechanical Properties (Typical, Hardened Condition)** * **Density:** ~7.70 g/cm³ * **Thermal Conductivity:** 20 W/m°C (at 20°C) * **Coefficient of Thermal Expansion:** 10.5 x 10⁻⁶/K (20-200°C) * **Elastic Modulus:** ~210 GPa * **Hardness (after heat treatment):** 58-62 HRC (Typically used at 60-62 HRC). * **Compressive Strength:** ~ 2500 MPa (at 60 HRC). **Heat Treatment** * **Soft Annealed Hardness:** Approx. 240 HB. * **Austenitizing / Hardening Temperature:** 1020 - 1040°C (Accurate temperature control is important). * **Tempering Temperature:** 180 - 550°C. For optimal combination of hardness and toughness, double tempering in the range of **180-250°C** or **480-540°C** is recommended. Tempering around 500-520°C provides good secondary hardness. * **Hardenability:** Very good, allowing through-hardening of substantial sections. **Product Applications** CARMO is one of the most universal cold work tool steels, used in a vast range of applications requiring wear resistance and strength. * **Blanking and Piercing:** Dies, punches, and stripper plates for medium to long production runs in sheet metal (steel, stainless steel). * **Forming Tools:** Forming rolls, bending tools, and draw dies. * **Thread Rolling Dies:** For standard materials. * **Slitters and Cutters:** Knives for cutting metal, plastic, and paper. * **Machine Parts:** Wear-resistant components like guides, liners, and shafts. * **Molds:** Plastic molds for abrasive plastics or for high-volume production requiring good wear resistance. * **Cold Extrusion Tools:** For less severe applications. **Available Forms** * Soft annealed, black or machined finish. * Round and flat bars * Forged blocks * Precision ground flat stock * Custom pre-machined blanks **Comparison Note: CARMO vs. VANADIS 10** While both are cold work steels, CARMO (conventional D2) serves as the high-performance standard, whereas **VANADIS 10 (PM)** is a specialized, premium grade. VANADIS 10 offers **far superior wear resistance** due to its higher alloy content and PM structure, but is less tough and more expensive. CARMO is chosen for its excellent all-around performance and cost-effectiveness in a majority of demanding, but not extreme, applications. **Conclusion** Assab Steels CARMO is the definitive workhorse of high-wear cold work tool steels. Its well-balanced properties, standardized heat treatment, and global availability under designations like AISI D2 make it a trusted and reliable choice for toolmakers worldwide. It delivers extended tool life and robust performance in a wide spectrum of industrial applications, making it a fundamental grade in any serious tool room. -:- For detailed product information, please contact sales. -: Assab Steels CARMO Cold Work Steel Specification Dimensions Size： Diameter 20-1000 mm Length <7238 mm Size:We can customized as required Standard： Per your request or drawing We can customized as required Properties（Theoretical） Chemical Composition -:- For detailed product information, please contact sales. -: Assab Steels CARMO Cold Work Steel Properties -:- For detailed product information, please contact sales. -:

Applications of Assab Steel Sheet,Plates CARMO Cold Work Steel Sheet,Plate -:- For detailed product information, please contact sales. -: Chemical Identifiers Assab Steel Sheet,Plates CARMO Cold Work Steel Sheet,Plate -:- For detailed product information, please contact sales. -:

Packing of Assab Steel Sheet/Plates CARMO Cold Work Steel Sheet/Plate -:- For detailed product information, please contact sales. -: Standard Packing: -:- For detailed product information, please contact sales. -: Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and Steel Sheet/Plate drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 3709 gallon liquid totes Special package is available on request. E FORUs’ is carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition