Bohler-Uddeholm,UDDEHOLM ELMAX® Powder Metallurgy Stainless Mold Steel Flange

1,We Manufacturing processes are primarily classified into four types: 1:Forging, 2:Casting, 3:Cutting, 4:Rolling. 2,We can manufacture in accordance with these standards. Standards: GB Series (Chinese Standards), JB Series (Machinery Standards), HG Series (Chemical Industry Standards), ASME B16.5 (American Standards), BS4504 (British Standards), DIN (German Standards), and JIS (Japanese Standards). Internationally, there are two primary systems of pipe flange standards: the European system, represented by the German DIN standards (including those of the former Soviet Union), and the American system, represented by the US ANSI pipe flange standards. Other common standards include: the Chinese Ministry of Machinery Industry standards (JB series), the Ministry of Chemical Industry standards (HG series), the Chinese National Standard *GB/T 9112–9124-2010 Steel Pipe Flanges*, as well as US standards (ASME B16.5), British standards (BS4504), German standards (DIN), Japanese standards (JIS), and marine standards (CBM), among others. The nominal pressure ratings for the PN series are designated by "PN" and comprise the following nine levels: PN2.5, PN6, PN10, PN16, PN25, PN40, PN63, PN100, and PN160. The nominal pressure ratings for the Class series are designated by "Class" and comprise the following six levels: Class150, Class300, Class600, Class900, Class1500, and Class2500. Flange Classification 1. **According to Chemical Industry Standards:** Flanges are classified as follows: Plate Flat Welding Flange (PL), Necked Flat Welding Flange (SO), Necked Butt Welding Flange (WN), Integral Flange (IF), Socket Welding Flange (SW), Threaded Flange (Th), Butt Welding Ring Loose Flange (PJ/SE), Blind Flange (BL), Flat Welding Ring Loose Flange (PJ/PJ), and Lined Blind Flange (BL(s)). 2. **According to Petrochemical (SH) Industry Standards:** Flanges are classified as follows: Threaded Flange (PL), Butt Welding Flange (WN), Flat Welding Flange (SO), Socket Welding Flange (SW), Loose Flange (LJ), and Blind Flange (no specific designation). 3. **According to Machinery (JB) Industry Standards:** Flanges are classified as follows: Integral Flange, Butt Welding Flange, Plate Flat Welding Flange, Butt Welding Ring Plate Loose Flange, Flat Welding Ring Plate Loose Flange, Lap Joint Ring Plate Loose Flange, and Blind Flange. 4. **According to Connection Method/Type:** Flanges are classified as follows: Plate Flat Welding Flange, Necked Flat Welding Flange, Necked Butt Welding Flange, Socket Welding Flange, Threaded Flange, Blind Flange, Necked Butt Welding Ring Loose Flange, Flat Welding Ring Loose Flange, Ring-Type Joint (RTJ) Flange and Blind Flange, Large-Diameter Plate Flange, Large-Diameter High-Neck Flange, Figure-8 Blind Plate, Butt Welding Ring Loose Flange, etc. 5. **According to the Component Being Connected:** Flanges can be classified into Vessel Flanges and Pipe Flanges. 6. **According to Structural Type:** Flanges include Integral Flanges, Threaded Flanges, Flat Welding Flanges, Butt Welding Flanges, Lap Joint (Loose/Swivel) Flanges, and Blind Flanges. A flange—also referred to as a flange plate or rim—is a component used to connect shafts to one another, or, more commonly, to join the ends of pipes. Flanges are also utilized at the inlet and outlet ports of equipment to facilitate connections between two devices—for instance, the flange on a speed reducer. A "flange connection" or "flanged joint" refers to a detachable joint assembly comprising three interconnected elements—a flange, a gasket, and bolts—that together form a sealed structural unit. In the context of piping systems, a "pipe flange" specifically denotes a flange used for plumbing within the installation; when applied to equipment, it refers to the inlet or outlet flange of that specific device. Flanges feature a series of holes through which bolts are inserted to securely fasten the two flanges together, while a gasket placed between the flanges ensures a leak-proof seal. Flanges are broadly categorized into three types: threaded (screw-in) flanges, welded flanges, and clamp-type flanges. Flanges are invariably used in pairs; threaded flanges are suitable for low-pressure piping applications, whereas welded flanges are required for systems operating at pressures exceeding 4 kilograms per square centimeter. A sealing gasket is inserted between the two flange plates, which are then firmly secured using bolts. The thickness of a flange—as well as the specifications of the bolts used to fasten it—vary depending on the specific pressure rating required for the application. When connecting equipment such as water pumps or valves to piping systems, the corresponding connection points on these devices are often manufactured in the shape of a matching flange; this method of attachment is also referred to as a "flange connection." Generally, any connecting component that utilizes bolts to join and seal the perimeters of two flat surfaces—such as the joints in ventilation ducts—is termed a "flange"; such components may collectively be classified as "flange-type parts." However, since such a connection often constitutes merely a *portion* of a larger device—for instance, the interface between a flange and a water pump—it would be inappropriate to classify the entire water pump itself as a "flange-type part." Conversely, smaller components—such as valves—that feature such flanged interfaces may indeed be appropriately categorized as "flange-type parts." -:- For detailed product information, please contact sales. -: Bohler-Uddeholm UDDEHOLM ELMAX® Powder Metallurgy Stainless Mold Steel Flange Product Information -:- For detailed product information, please contact sales. -: Bohler-Uddeholm UDDEHOLM ELMAX® Powder Metallurgy Stainless Mold Steel Flange Synonyms -:- For detailed product information, please contact sales. -:

Bohler-Uddeholm UDDEHOLM ELMAX® Powder Metallurgy Stainless Mold Steel Product Information -:- For detailed product information, please contact sales. -: # **Böhler-Uddeholm UDDEHOLM ELMAX® Powder Metallurgy Stainless Mold Steel** ## **Product Overview** **UDDEHOLM ELMAX®** is a premium **chromium-vanadium-molybdenum alloyed powder metallurgy (PM) stainless tool steel** renowned for its exceptional combination of **high wear resistance, excellent corrosion resistance, and superior polishability**. Manufactured via advanced powder metallurgy technology, ELMAX® achieves a homogeneous microstructure with a fine, uniform distribution of hard vanadium and chromium carbides. This proprietary PM process eliminates the segregation and large carbides common in conventionally cast stainless tool steels, resulting in isotropic properties, minimal distortion during heat treatment, and outstanding performance in demanding plastic molding and general tooling applications. --- ## **1. Key Characteristics & Advantages** * **Exceptional Wear Resistance:** Superior to conventional stainless mold steels (e.g., AISI 420) due to a high volume of hard vanadium carbides, providing extended tool life against abrasive plastics. * **Excellent Corrosion Resistance:** High chromium content (approx. 18%) provides very good resistance to moisture, many chemicals, and corrosive plastic decomposition products (e.g., from PVC). * **Superb Polishability:** The uniform, fine carbide structure allows for an outstanding mirror finish (capable of achieving SPI A-1 / #1 Diamond finish), critical for optical and high-gloss plastic parts. * **High Compressive Strength & Hardness:** Achieves very high hardness (up to 62 HRC) with excellent dimensional stability. * **Good Toughness:** Offers better toughness than many high-carbon, high-chromium steels at equivalent hardness levels. * **Isotropic Properties:** Uniform behavior in all directions due to the homogeneous PM structure, ensuring predictable machining, etching (texturing), and performance. * **Good Dimensional Stability:** Minimal and predictable size change during hardening, ideal for precision tooling. --- ## **2. Typical Chemical Composition (Weight %)** | Element | Carbon (C) | Chromium (Cr) | Molybdenum (Mo) | Vanadium (V) | Silicon (Si) | Manganese (Mn) | | :--- | :---: | :---: | :---: | :---: | :---: | :---: | | **Content** | **1.70** | **18.00** | **1.00** | **3.00** | **0.80** | **0.30** | **Alloying Rationale:** * **Carbon (1.70%) & Chromium (18.0%):** Form a high volume of hard, corrosion-resistant chromium carbides (M₇C₃ and M₂₃C₆). The high Cr content also ensures excellent stainless properties. * **Vanadium (3.00%):** The key element for wear resistance. Forms extremely hard vanadium carbides (VC) that are finely and uniformly distributed via PM process, providing exceptional abrasion resistance. * **Molybdenum (1.00%):** Enhances hardenability, promotes secondary hardening during tempering, and increases corrosion resistance, particularly against pitting. * **Silicon & Manganese:** Aid in deoxidation and contribute to hardenability. --- ## **3. Physical & Mechanical Properties** ### **Physical Properties:** * **Density:** ~7.7 g/cm³ * **Thermal Conductivity:** ~20 W/(m·K) at 20°C * **Modulus of Elasticity:** ~210 GPa * **Coefficient of Thermal Expansion:** ~10.3 x 10⁻⁶/K (20-100°C) ### **Heat Treatment & Mechanical Data:** * **Soft Annealed Hardness:** ~240 HBW * **Austenitizing Temperature:** 1050 - 1080°C (1920 - 1975°F) * **Quenching Medium:** Oil, salt bath, or pressurized gas (2-5 bar). * **Tempering Range:** 250 - 550°C (480 - 1020°F). **Double or triple tempering is mandatory.** * **Achievable Hardness:** **57 - 62 HRC** * **Optimal Range:** 58-60 HRC (tempered at 200-250°C) offers the best balance of wear resistance, polishability, and corrosion resistance for most mold applications. * Higher toughness can be achieved by tempering at 400-500°C, resulting in 54-57 HRC. * **Compressive Strength:** ~3200 MPa (at 60 HRC) * **Corrosion Resistance:** Comparable to AISI 440B/C stainless steel. Significantly better than standard tool steels. --- ## **4. Primary Applications** ELMAX® is the premier choice for high-performance plastic molds and other precision tooling requiring a blend of wear and corrosion resistance. * **Plastic Injection Molds:** * For **engineering plastics and abrasive composites** (glass-filled, mineral-filled, carbon fiber-reinforced polymers). * For **corrosive plastics** such as PVC, flame-retardant (FR) grades, and polyacetals. * **Optical lenses, light guides, and high-gloss parts** requiring a supreme mirror finish. * **Die Casting:** Ejector pins, cores, and inserts for aluminum and zinc, where resistance to soldering and corrosion is beneficial. * **Precision Cold Work Tooling:** Punches, dies, and forming tools for corrosive or abrasive sheet materials. * **Industrial Wear Parts:** Nozzles, screws, and barrels in extrusion where abrasion and corrosion are concurrent issues. * **Cutting and Slitting:** Blades for cutting corrosive or abrasive materials (e.g., coated papers, films, food products). --- ## **5. Relevant International Standards & Comparable Grades** ELMAX® is a proprietary Uddeholm PM grade. There is no direct chemical or performance equivalent among standardized steels. | Category | Standard / Supplier | Grade | Similarity / Key Difference | | :--- | :--- | :--- | :--- | | **PM Stainless Tool Steel** | **Uddeholm Proprietary** | **ELMAX®** | The reference material. | | **Conventional Stainless Tool Steel** | **AISI / ASTM** | **440C** | Similar Cr content for corrosion resistance, but ELMAX has higher V/C for superior wear resistance and a uniform PM structure. | | **Conventional Stainless Mold Steel** | **AISI / Proprietary** | **420 Stainless (e.g., Stavax ESR)** | Less wear resistant, but easier to machine and polish. ELMAX is the high-wear, high-performance upgrade. | | **PM Cold Work Steel** | **Uddeholm** | **VANADIS Series (e.g., VANADIS 4 Extra)** | Higher wear resistance, but lower corrosion resistance. ELMAX bridges the gap between wear and corrosion. | | **PM Corrosion-Resistant Steel** | **Böhler** | **M333 / M340** | Other proprietary PM stainless grades, each with specific alloy balances for wear/corrosion. | **Note:** In technical datasheets, ELMAX® is often classified under **"PM High Chromium-Vanadium Stainless Tool Steel."** --- ## **6. Processing & Fabrication Guidelines** * **Machining:** Perform all heavy machining in the **soft-annealed condition**. It is more abrasive than conventional steels; use sharp, wear-resistant carbide tools and stable setups. * **Grinding:** Offers **good grindability for a high-alloy PM steel**. Use aluminum oxide or CBN wheels with ample cooling to avoid thermal damage. * **EDM (Electrical Discharge Machining):** Suitable. A **stress-relieving temper (e.g., 550°C)** is **highly recommended after EDM** to remove the brittle, transformed "white layer" and prevent micro-cracking, especially before polishing. * **Heat Treatment:** **Requires precise, controlled atmosphere or vacuum heat treatment** to prevent decarburization and oxidation. Preheating at 600°C and 850°C is essential. **Multiple tempering cycles (2-3) are critical** to achieve optimal properties, transform retained austenite, and ensure dimensional stability. Cryogenic treatment can be applied for maximum stability. * **Polishing & Texturing:** The homogeneous structure is ideal for polishing. Proceed systematically from coarse to fine diamond paste/compound. It is also excellent for photo-etching and laser texturing. * **Surface Treatment:** Can be further enhanced with **PVD coatings (TiN, CrN, DLC)** to reduce friction and prevent sticking/galling, especially useful for filled plastics. --- ## **7. Conclusion** **UDDEHOLM ELMAX®** represents a paradigm shift in stainless mold steel technology. By leveraging powder metallurgy, it successfully overcomes the traditional trade-off between corrosion resistance and wear resistance. For molders facing the dual challenges of abrasive fillers and corrosive polymers, or for those demanding the highest possible surface finish for optical applications, ELMAX® provides a single, high-performance solution that maximizes tool life, part quality, and productivity. It is the material of choice when upgrading from conventional 420-type stainless steels due to wear issues, or when seeking a corrosion-resistant alternative to high-wear PM cold work steels like the VANADIS series. For critical applications where tool failure is not an option, ELMAX® offers reliability, longevity, and superior finished part quality. -:- For detailed product information, please contact sales. -: Bohler-Uddeholm UDDEHOLM ELMAX® Powder Metallurgy Stainless Mold Steel Specification Dimensions Size： Diameter 20-1000 mm Length <6883 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. -: Bohler-Uddeholm UDDEHOLM ELMAX® Powder Metallurgy Stainless Mold Steel Properties -:- For detailed product information, please contact sales. -:

Applications of Bohler-Uddeholm UDDEHOLM ELMAX® Powder Metallurgy Stainless Mold Steel Flange -:- For detailed product information, please contact sales. -: Chemical Identifiers Bohler-Uddeholm UDDEHOLM ELMAX® Powder Metallurgy Stainless Mold Steel Flange -:- For detailed product information, please contact sales. -:

Packing of Bohler-Uddeholm UDDEHOLM ELMAX® Powder Metallurgy Stainless Mold Steel Flange -:- 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 Flange 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 3354 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