Carpenter Micro-Melt® 9 Hardened and Tempered Tool Steel

Carpenter Micro-Melt® 9 Hardened and Tempered Tool Steel Product Information -:- For detailed product information, please contact sales. -: Carpenter Micro-Melt® 9 Hardened and Tempered Tool Steel Synonyms -:- For detailed product information, please contact sales. -:

Carpenter Micro-Melt® 9 Hardened and Tempered Tool Steel Product Information -:- For detailed product information, please contact sales. -: ### **Carpenter Micro-Melt® 9 Hardened and Tempered (CPM 9T/9TT) Tool Steel: The Ultimate High-Toughness, Wear-Resistant Solution** **Product Overview** Carpenter Micro-Melt® 9 Hardened and Tempered (commonly referred to as CPM 9T or 9TT) represents the finished, ready-to-use state of this premium powder metallurgy (PM) tool steel. Supplied in the fully heat-treated condition, it delivers an exceptional combination of **superior impact toughness and good wear resistance**, a balance that is difficult to achieve with conventional ingot-cast steels. The “Micro-Melt” process ensures a fine, uniform, and isotropic carbide distribution, eliminating the performance variations and weaknesses associated with carbide segregation. This product is designed for applications where resistance to chipping, cracking, and catastrophic failure under high stress is paramount. **Key Advantages (Hardened & Tempered State)** * **Unmatched Toughness:** Offers significantly higher impact strength and fracture toughness than traditional high-carbon, high-chromium steels like D2, and often exceeds the performance of dedicated shock steels (e.g., S7) at comparable hardness levels. * **Excellent Wear Resistance:** Provides substantial resistance to abrasion and galling, suitable for demanding forming and cutting applications. * **High Compressive Strength:** Capable of withstanding extreme pressure without deforming. * **Dimensional Stability & Predictability:** Supplied at a consistent, pre-determined hardness, eliminating the risks and costs associated with in-house heat treatment. The isotropic PM structure ensures uniform performance in all directions. * **Reduced Lead Time & Risk:** Ready for final finishing (grinding, EDM, polishing) and immediate use, accelerating production schedules and removing heat treatment variables. **Typical Chemical Composition (%)** The composition is identical to the annealed version, engineered to develop its unique properties after heat treatment. | Element | Carbon (C) | Chromium (Cr) | Molybdenum (Mo) | Tungsten (W) | Vanadium (V) | Silicon (Si) | Manganese (Mn) | | :--- | :---: | :---: | :---: | :---: | :---: | :---: | :---: | | **Content** | 0.50 - 0.60 | 4.75 - 5.25 | 1.30 - 1.80 | 1.30 - 1.80 | 0.90 - 1.10 | 0.15 - 0.40 | 0.20 - 0.50 | **Physical & Mechanical Properties (Hardened & Tempered Condition)** * **Standard Hardness:** Typically supplied in the range of **58-62 HRC**, with **59-61 HRC** being the most common for optimal toughness/wear balance. Specific hardness can be requested. * **Density:** 7.87 g/cm³ (0.284 lb/in³) * **Ultimate Tensile Strength:** ~ 2,000 - 2,400 MPa (290 - 350 ksi) * **Yield Strength (0.2% Offset):** ~ 1,800 - 2,200 MPa (260 - 320 ksi) * **Compressive Strength:** > 3,000 MPa (435 ksi) at 60 HRC. * **Fracture Toughness:** Notably high for its hardness class, often 2-3 times that of conventional D2 steel. * **Thermal Conductivity:** Relatively low, as is characteristic of high-alloy tool steels. * **Coefficient of Thermal Expansion:** Approximately 10.8 x 10⁻⁶/°C (68-212°F). **Fabrication Notes (in Hardened State)** * **Machining:** Not recommended. Material is supplied ready for use. * **Grinding:** Can be ground using proper techniques for hardened tool steels (e.g., sharp wheels, light passes, ample coolant). * **Electrical Discharge Machining (EDM):** Can be performed. A subsequent low-temperature temper (e.g., 150-200°C / 300-400°F) is recommended to relieve the white layer/redeposited layer. * **Finishing:** Excellent candidate for polishing and surface coatings (e.g., TiN, TiCN, CrN) to further enhance performance. **International Standards & Cross-References** * **Carpenter Designation:** Micro-Melt 9 Hardened & Tempered (CPM 9T, 9TT). * **UNS:** T30109 * **AISI:** Modified Type A8 (PM Premium Grade). * **European (EN):** A PM premium alternative that surpasses the properties of standard 1.2606 (55NiCrMoV7). * **Japanese (JIS):** No direct PM equivalent. Superior in toughness to SKD11 (JIS) and offers better wear resistance than SKD61 (JIS) at similar toughness levels. * **Common Comparison:** Often positioned as a **"Super Tough D2"** or a **"Wear-Resistant S7."** **Typical Applications** This ready-to-install material is specified for the most demanding applications where tool failure is costly and downtime must be minimized. 1. **Severe Punching & Blanking:** * Punches and dies for high-strength steels, spring steels, and abrasive materials. * Heavy-duty blanking in thick materials. * Progressive die components subject to high shock. 2. **Cold Forming & Forging:** * Cold heading dies, extrusion punches, and nail-making dies. * Thread rolling dies for hard materials. * Forming rolls and slitter knives where edge integrity is critical. 3. **Critical Molds:** * Injection molds for abrasive or reinforced plastics (e.g., fiberglass, minerals). * Core pins and cavities prone to bending or breakage. * Die-casting mold components for non-ferrous metals requiring high toughness. 4. **Industrial Cutting Tools:** * High-performance shear blades for metal processing. * Knives for cutting composites, cables, and tires. * Woodworking tools for engineered materials. 5. **Precision Tooling & Machinery:** * Wear plates, guide rails, and arbors in high-load machinery. * Master gauges and fixtures requiring exceptional dimensional stability and wear life. **Conclusion** Carpenter Micro-Melt® 9 Hardened and Tempered Tool Steel is the definitive off-the-shelf solution for engineers and tool designers facing the dual challenges of extreme impact and abrasive wear. By leveraging the benefits of powder metallurgy and precise factory heat treatment, it delivers guaranteed, consistent performance that extends tool life, reduces unscheduled downtime, and improves productivity in the world's most challenging tooling applications. When failure is not an option, CPM 9T provides the robust, reliable answer. -:- For detailed product information, please contact sales. -: Carpenter Micro-Melt® 9 Hardened and Tempered Tool Steel Specification Dimensions Size： Diameter 20-1000 mm Length <6924 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. -: Carpenter Micro-Melt® 9 Hardened and Tempered Tool Steel Properties -:- For detailed product information, please contact sales. -:

Applications of Carpenter Micro-Melt® 9 Hardened and Tempered Tool Steel -:- For detailed product information, please contact sales. -: Chemical Identifiers Carpenter Micro-Melt® 9 Hardened and Tempered Tool Steel -:- For detailed product information, please contact sales. -:

Packing of Carpenter Micro-Melt® 9 Hardened and Tempered Tool Steel -:- 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 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 3395 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