Crucible Steel Sheet,Plate,PM M2 Tool Steel Sheet,Plate

Crucible Steel Sheet/Plate PM M2 Tool Steel Sheet/Plate Product Information -:- For detailed product information, please contact sales. -: Crucible Steel Sheet/Plate PM M2 Tool Steel Sheet/Plate Synonyms -:- For detailed product information, please contact sales. -:

Crucible Steel PM M2 Tool Steel Product Information -:- For detailed product information, please contact sales. -: ### **Product Introduction: Crucible PM M2 Tool Steel** Crucible PM M2 is a premium particle metallurgy (PM) version of the industry-standard AISI M2 high-speed steel (HSS). It embodies the application of advanced Crucible Particle Metallurgy technology to a classic and versatile alloy, resulting in a material that retains all the desirable properties of conventional M2—excellent hot hardness (red hardness), good wear resistance, and moderate toughness—while significantly overcoming its traditional limitations. The PM manufacturing process produces a fine, isotropic microstructure with a uniform distribution of small, hard carbides. This eliminates the carbide segregation, banding, and size variations inherent in ingot-cast M2. Consequently, Crucible PM M2 offers superior grindability, enhanced dimensional stability during heat treatment, improved toughness and fatigue strength, and more consistent, predictable performance in all directions. It is the engineered upgrade for applications where reliability, tool life, and precision are critical. --- ### **1. Chemical Composition (Weight %)** The composition adheres to the standard AISI M2 specification, but with tighter control and homogeneity. | **Element** | **Carbon (C)** | **Tungsten (W)** | **Molybdenum (Mo)** | **Chromium (Cr)** | **Vanadium (V)** | **Cobalt (Co)** | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | **Content** | 0.85 - 0.95 | 5.90 - 6.40 | 4.70 - 5.20 | 3.80 - 4.40 | 1.75 - 2.05 | - | | **Role** | Provides hardness and forms carbides for wear resistance. | Imparts hot hardness and abrasion resistance. Forms stable carbides. | Primary contributor to hardenability and hot hardness. Partially substitutes for tungsten. | Ensures deep hardenability and improves wear/oxidation resistance. | Forms hard, wear-resistant vanadium carbides (VC). | Not present in standard PM M2. (Cobalt-bearing variants like PM M35 or PM M42 exist). | *Note: Iron (Fe) constitutes the remainder. Sulfur (S) is kept very low (<0.03%).* --- ### **2. Physical & Mechanical Properties** *Typical properties at room temperature after proper heat treatment to 63-65 HRC.* * **Density:** 8.16 g/cm³ (0.295 lb/in³) * **Modulus of Elasticity:** ~215 GPa (31.2 x 10⁶ psi) * **Thermal Conductivity:** Moderate, characteristic of molybdenum-tungsten high-speed steels. * **Hot Hardness (Red Hardness):** **Excellent.** Can maintain a hardness above 60 HRC at temperatures exceeding 500°C (930°F), enabling high-speed machining operations. * **Hardness (Typical Working Range):** **62 - 66 HRC.** The most common working hardness is **64-65 HRC**. * **Abrasion Resistance:** **Good to Very Good.** Superior to many cold work tool steels (like D2) at elevated temperatures due to retained hardness. At room temperature, wear resistance is competitive. * **Toughness:** **Good for a high-speed steel.** The PM structure provides higher and more consistent transverse toughness compared to conventional M2, reducing the risk of chipping and fracture. * **Grindability:** **Excellent (compared to conventional M2).** This is a key advantage. The fine, uniform carbides allow for faster grinding rates, better surface finishes, reduced grinding burns, and longer grinding wheel life. * **Dimensional Stability:** **Superior.** Minimal and predictable distortion during heat treatment due to the homogeneous microstructure. --- ### **3. Heat Treatment** * **Annealing:** Heat to 850-870°C (1560-1600°F), slow cool. Typical annealed hardness: 215-240 HB. * **Stress Relieving:** 600-650°C (1110-1200°F), then slow cool. * **Preheating:** **Critical.** Double preheat is standard: First at 540-650°C (1000-1200°F), then at 815-870°C (1500-1600°F) to minimize thermal shock. * **Austenitizing:** 1190-1220°C (2175-2230°F) for optimal balance of properties. Higher temperatures increase hot hardness and wear resistance but reduce toughness. * **Quenching:** Air quench (for most tools), positive pressure gas quench (for best dimensional control), or salt bath quench. Oil quenching is possible but not preferred for precision tools due to higher distortion. * **Tempering:** **Mandatory Multiple Tempers.** Temper immediately after quenching to room temperature. **Minimum of two tempers** (three are often recommended), each for 2 hours. Typical tempering range: 540-570°C (1000-1060°F). A distinct secondary hardening peak is observed, increasing hardness after the first temper. * **Sub-Zero Treatment:** Commonly applied between quenching and tempering to convert retained austenite, ensuring maximum hardness and dimensional stability. --- ### **4. Key Applications** Crucible PM M2 is the material of choice for high-performance cutting tools and demanding wear parts. * **Precision Cutting Tools:** Gear hobs, shaper cutters, broaches, milling cutters (end mills, face mills), drills, and reamers for machining steels, cast irons, and non-ferrous alloys. * **Punches and Dies:** For cold work applications such as fine blanking, stamping, and forming, especially where a combination of wear resistance and toughness is needed. * **Roll Forming & Thread Rolling:** Rolls for producing threads or forms on metal parts. * **Woodworking Tools:** High-quality router bits, shaper cutters, and planer knives where heat build-up is a concern. * **Injection Molding & Extrusion:** Wear components like nozzles, screws, and barrels for processing abrasive plastics. --- ### **5. International Standards & Cross-References** * **AISI/SAE:** M2 * **UNS:** T11302 * **European (EN):** HS 6-5-2 / **1.3343** * **Japanese (JIS):** SKH51 * **ISO:** HS6-5-2 * **Common Trade Names:** PM M2, Micro-Melt® M2, ASP® 2020 (similar PM grade from another manufacturer). --- ### **6. Advantages & Limitations** **Advantages of PM M2 over Conventional M2:** * **Superior Grindability:** Lower grinding forces, better finish, less risk of damage. * **Higher & More Consistent Toughness:** Especially in the transverse direction, leading to fewer tool failures. * **Enhanced Dimensional Stability:** Reduced distortion for more precise heat treatment. * **Improved Fatigue Strength:** Longer life for tools subjected to cyclic loading. * **More Uniform Performance:** Anisotropy is virtually eliminated. * **Longer Tool Life:** Due to the combination of the above factors. **Limitations:** * **Cost:** Higher initial material cost than conventional ingot-cast M2. * **Not a Stainless Steel:** Requires protection from corrosion. * **Heat Treatment Required:** Like all high-speed steels, requires precise and controlled heat treatment to achieve optimal properties. --- **In summary, Crucible PM M2 is not merely a material but a performance upgrade.** It takes the proven, workhorse chemistry of AISI M2 and elevates it through advanced manufacturing, delivering a tool steel that offers greater reliability, longer service life, and better processability. It is the intelligent choice for manufacturers seeking to maximize productivity and consistency in demanding tooling applications. -:- For detailed product information, please contact sales. -: Crucible Steel PM M2 Tool Steel Specification Dimensions Size： Diameter 20-1000 mm Length <6952 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. -: Crucible Steel PM M2 Tool Steel Properties -:- For detailed product information, please contact sales. -:

Applications of Crucible Steel Sheet,Plate PM M2 Tool Steel Sheet,Plate -:- For detailed product information, please contact sales. -: Chemical Identifiers Crucible Steel Sheet,Plate PM M2 Tool Steel Sheet,Plate -:- For detailed product information, please contact sales. -:

Packing of Crucible Steel Sheet/Plate PM M2 Tool 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 3423 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