Bohler-Uddeholm,BÖHLER W302 ISOBLOC® H13 hot work tool 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 BÖHLER W302 ISOBLOC® H13 hot work tool Steel Flange Product Information -:- For detailed product information, please contact sales. -: Bohler-Uddeholm BÖHLER W302 ISOBLOC® H13 hot work tool Steel Flange Synonyms -:- For detailed product information, please contact sales. -:

Bohler-Uddeholm BÖHLER W302 ISOBLOC® H13 hot work tool steel Product Information -:- For detailed product information, please contact sales. -: # **Böhler-Uddeholm BÖHLER W302 ISOBLOC® H13 Hot Work Tool Steel** ## **Product Overview** **BÖHLER W302 ISOBLOC®** is a premium-quality **chromium-molybdenum-vanadium alloyed hot work tool steel** conforming to AISI H13 specifications, manufactured under Böhler-Uddeholm's proprietary **ISOBLOC®** process. This advanced production technology ensures exceptional **microstructural homogeneity, minimized anisotropy, and superior dimensional stability** during heat treatment. Designed for demanding high-temperature applications, W302 ISOBLOC® delivers outstanding **thermal fatigue resistance, high-temperature strength (red hardness), and toughness**, making it the material of choice for critical die-casting, extrusion, and forging tools operating under severe thermal cycling conditions. --- ## **1. Key Characteristics & Advantages** * **Exceptional Thermal Fatigue Resistance:** Superior resistance to heat checking and thermal cracking caused by repeated heating and cooling cycles, extending die life significantly. * **High Temperature Strength (Red Hardness):** Maintains high hardness and mechanical strength at elevated operating temperatures (up to approximately 600°C / 1110°F). * **Excellent Toughness:** Provides high impact strength and fracture resistance at both room and elevated temperatures, crucial for withstanding mechanical shock in service. * **Superior Dimensional Stability:** The ISOBLOC® process minimizes directional properties (anisotropy), resulting in predictable, minimal distortion during heat treatment and uniform behavior in service. * **Good Wear Resistance at High Temperature:** Offers adequate resistance to erosion and soldering in aluminum and magnesium die-casting applications. * **Good Hardenability:** Can be through-hardened in substantial sections with consistent properties. * **Optimized Heat Treatment Response:** Provides a wide safety margin during hardening with reduced risk of quench cracking. --- ## **2. Typical Chemical Composition (Weight %)** | Element | Carbon (C) | Chromium (Cr) | Molybdenum (Mo) | Vanadium (V) | Silicon (Si) | | :--- | :---: | :---: | :---: | :---: | :---: | | **Content** | **0.37 - 0.42** | **4.80 - 5.50** | **1.20 - 1.50** | **0.90 - 1.10** | **0.90 - 1.10** | **Alloying Rationale:** * **Carbon (0.39%):** Balanced to provide a good combination of hardness, strength, and toughness after tempering. * **Chromium (5.2%) & Molybdenum (1.3%):** Provide hardenability, high-temperature strength, and resistance to softening (secondary hardening). Molybdenum specifically enhances toughness and reduces susceptibility to temper embrittlement. * **Vanadium (1.0%):** Forms stable carbides that increase wear resistance, refine grain size, and contribute significantly to secondary hardening and high-temperature strength. * **Silicon (1.0%):** Increases oxidation resistance and strengthens the ferrite matrix. * **ISOBLOC® Process:** This controlled manufacturing and heat treatment sequence ensures a fine, uniform carbide distribution and minimized segregation, directly contributing to the steel's isotropic properties and consistent performance. --- ## **3. Physical & Mechanical Properties** ### **Physical Properties:** * **Density:** ~7.80 g/cm³ * **Thermal Conductivity:** ~28 W/(m·K) at 20°C * **Modulus of Elasticity:** ~210 GPa * **Coefficient of Thermal Expansion:** ~11.5 x 10⁻⁶/K (20-500°C) * **Specific Heat Capacity:** ~460 J/(kg·K) ### **Heat Treatment & Mechanical Data:** * **Annealed Hardness:** ~210 HBW * **Austenitizing Temperature:** 1020 - 1050°C (1870 - 1920°F) * **Quenching Medium:** Air (forced air for larger sections) or oil (for complex shapes to minimize distortion risk). * **Tempering:** **Double tempering is essential.** Temperature range: 540 - 650°C (1005 - 1200°F). * **Typical Working Hardness:** **44 - 52 HRC** * **Die-Casting (Al/Zn):** 44-48 HRC (tempered at 580-620°C) for optimal thermal fatigue resistance. * **Extrusion/High Stress:** 48-52 HRC (tempered at 540-580°C) for higher strength and wear resistance. * **Hot Hardness:** Retains approximately 35-40 HRC at 600°C. * **Impact Toughness:** High, typically >30 J (Charpy U-notch) at 46 HRC. --- ## **4. Primary Applications** W302 ISOBLOC® is the industry benchmark for a wide range of hot work tooling applications: * **Die-Casting Dies:** * Cavities, cores, and inserts for **aluminum, magnesium, and zinc** die-casting. * Nozzles, goosenecks, and plunger tips. * **Hot Extrusion Tools:** * Dies, mandrels, and containers for extruding **aluminum, copper alloys, and steel**. * **Hot Forging Dies:** * Dies, punches, and inserts for **hammer and press forging** of steel and non-ferrous metals. * **Press Hardening (Hot Stamping) Tools:** For forming ultra-high-strength steel automotive components. * **Glass Mold Tools:** For molding glass containers and products. * **Plastic Molds:** For high-temperature engineering plastics or where superior thermal fatigue resistance is needed in hot runner systems. --- ## **5. Relevant International Standards & Comparable Grades** BÖHLER W302 ISOBLOC® is the premium variant of the globally recognized AISI H13 grade. | Standard | Grade / Designation | Country/Region | Similarity / Note | | :--- | :--- | :--- | :--- | | **AISI / ASTM A681** | **H13** | USA | Direct equivalent specification. W302 ISOBLOC® represents the premium quality tier. | | **DIN / Werkstoff Nr.** | **1.2344 / X40CrMoV5-1** | Germany / EU | Standard European designation. | | **JIS G4404** | **SKD61** | Japan | Primary Japanese equivalent. | | **ISO 4957** | **X40CrMoV5-1** | International | Corresponding ISO hot work steel grade. | | **GB/T 1299** | **4Cr5MoSiV1** | China | Common Chinese designation. | | **Uddeholm Proprietary** | **ORVAR® 2** | Uddeholm | Similar H13-type grade; W302 ISOBLOC® emphasizes isotropic properties via the specific ISOBLOC® process. | **Critical Distinction:** The **ISOBLOC®** designation is key, guaranteeing superior internal quality, homogeneity, and minimized directional properties compared to standard H13/SKD61/1.2344 material. --- ## **6. Processing & Fabrication Guidelines** * **Machining:** Good machinability in the annealed condition. Use sharp carbide tools with positive rake angles. The ISOBLOC® structure provides consistent chip formation and predictable tool wear. * **Heat Treatment:** 1. **Preheating:** Essential. Typically at 600-650°C and 850-900°C. 2. **Austenitizing:** In a controlled atmosphere or vacuum furnace to prevent decarburization. 3. **Quenching:** Air cooling is standard. For complex shapes, high-pressure gas quenching or oil quenching may be used to minimize stress. 4. **Tempering:** **Must be tempered at least twice,** immediately after quenching. The second temper should follow once the tool has cooled to room temperature after the first. * **Stress Relieving:** After rough machining, a stress relief at 600-650°C is highly recommended. * **Welding:** Repairs are common. Use matching or slightly softer hot work steel filler wires (e.g., Böhler UDDEHOLM WELDEX H13). * **Pre-heat:** 400-500°C. * **Post-Weld Heat Treatment:** Re-harden and temper to restore full properties in the heat-affected zone. * **Surface Treatment:** Often nitrided (gas, plasma, or salt bath) to dramatically increase surface hardness (>1000 HV), improving resistance to soldering, erosion, and wear in die-casting and extrusion. * **EDM:** Suitable. A low-temperature temper (e.g., 400-450°C) is recommended after EDM to relieve the stresses in the transformed white layer. --- ## **7. Conclusion** **BÖHLER W302 ISOBLOC®** represents the **pinnacle of H13 hot work tool steel technology**. By integrating the proven H13 chemistry with the advanced ISOBLOC® manufacturing process, it delivers unmatched consistency, reliability, and performance in the most punishing thermal cycling environments. Its superior isotropic properties ensure that complex dies behave predictably during heat treatment and in service, reducing the risk of distortion and premature failure. For die-casters, extruders, and forgers where maximizing tool life, minimizing unplanned downtime, and ensuring process stability are critical to profitability, the investment in W302 ISOBLOC® is justified by significantly extended production runs, improved part quality, and reduced maintenance costs. It is the definitive material of choice when failure is not an option. -:- For detailed product information, please contact sales. -: Bohler-Uddeholm BÖHLER W302 ISOBLOC® H13 hot work tool steel Specification Dimensions Size： Diameter 20-1000 mm Length <6893 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 BÖHLER W302 ISOBLOC® H13 hot work tool steel Properties -:- For detailed product information, please contact sales. -:

Applications of Bohler-Uddeholm BÖHLER W302 ISOBLOC® H13 hot work tool Steel Flange -:- For detailed product information, please contact sales. -: Chemical Identifiers Bohler-Uddeholm BÖHLER W302 ISOBLOC® H13 hot work tool Steel Flange -:- For detailed product information, please contact sales. -:

Packing of Bohler-Uddeholm BÖHLER W302 ISOBLOC® H13 hot work tool 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 3364 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