Assab Steel Flanges,DIEVAR Hot Work 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. -: Assab Steel Flanges DIEVAR Hot Work Steel Flange Product Information -:- For detailed product information, please contact sales. -: Assab Steel Flanges DIEVAR Hot Work Steel Flange Synonyms -:- For detailed product information, please contact sales. -:

Assab Steels DIEVAR Hot Work Steel Product Information -:- For detailed product information, please contact sales. -: ## **Assab Steels DIEVAR: Premium Chromium-Hot Work Steel for Demanding Die Casting Applications** --- ### **Product Overview** Assab Steels DIEVAR is a specially formulated, premium-grade chromium hot work tool steel developed through advanced metallurgical technology and Electro-Slag Remelting (ESR) process. Designed specifically for aluminum, magnesium, and zinc die-casting applications, DIEVAR offers superior performance compared to conventional H13-type steels by significantly extending die life through enhanced thermal fatigue resistance and improved high-temperature stability. ### **Key Technical Advantages** - **Exceptional Thermal Fatigue Resistance**: Advanced alloy design minimizes heat checking and crack propagation under severe thermal cycling conditions - **Optimized High-Temperature Strength**: Maintains hardness and strength at operating temperatures up to 650°C - **Enhanced Toughness**: Superior impact resistance reduces susceptibility to catastrophic failure - **Excellent Thermal Conductivity**: Promotes rapid heat dissipation, reducing thermal gradients and stress concentrations - **Outstanding Dimensional Stability**: Minimal distortion during heat treatment and service ### **International Standard Designations** | Standard System | Designation | |----------------|-------------| | **Assab/Uddeholm** | DIEVAR (ESR) | | **AISI/ASTM** | Modified H13 (Proprietary) | | **European Norm (EN)** | 1.2367 (Modified) | | **DIN** | X38CrMoV5-3 | | **JIS** | SKD61 (Enhanced) | | **Common Industry Reference** | Premium Die-Casting Steel | ### **Chemical Composition (Typical Weight %)** | Element | C | Si | Mn | Cr | Mo | V | |---------|----|----|----|----|----|----| | **Content** | 0.35 | 0.30 | 0.50 | 5.00 | 2.30 | 0.60 | *Additional micro-alloying elements may include trace amounts of nickel and copper for enhanced performance characteristics.* ### **Physical Properties** | Property | Value | Conditions | |----------|-------|------------| | **Density** | 7.80 g/cm³ | At 20°C | | **Thermal Conductivity** | 29.0 W/m·K | At 20°C | | **Coefficient of Thermal Expansion** | 11.8 × 10⁻⁶/K | 20-200°C | | **Specific Heat Capacity** | 450 J/kg·K | At 20°C | | **Elastic Modulus** | 210 GPa | At 20°C | | **Thermal Diffusivity** | 12.5 mm²/s | At 20°C | ### **Mechanical Properties** | Hardness (HRC) | Tensile Strength (MPa) | Yield Strength (MPa) | Impact Toughness (J) | |----------------|----------------------|-------------------|---------------------| | 44-48 | 1450-1600 | 1250-1400 | 25-35 | | 48-50 | 1600-1750 | 1400-1550 | 20-28 | | 50-52 | 1750-1900 | 1550-1700 | 15-22 | *Note: Properties are typical for tempered conditions at respective hardness levels.* ### **Heat Treatment Specifications** #### **Annealing** - **Temperature**: 850-900°C - **Cooling**: Furnace cool to 500°C, then air cool - **Annealed Hardness**: ≤ 230 HB #### **Stress Relieving** - **Temperature**: 600-650°C - **Holding Time**: 2 hours per 25 mm thickness #### **Hardening** - **Preheating**: 600-650°C and 850-900°C (two-stage) - **Austenitizing**: 1020-1050°C - **Quenching**: High-pressure gas or oil quenching - **Holding Time**: 30 minutes per 25 mm at austenitizing temperature #### **Tempering** - **Temperature**: 540-650°C (double tempering mandatory) - **Holding Time**: Minimum 2 hours per temper - **Cooling**: Air cool to room temperature between tempers ### **Typical Applications** #### **Primary Applications** 1. **High-Pressure Aluminum Die Casting** - Core and cavity inserts - Complex thin-wall components - Structural automotive parts - Engine blocks and transmission cases 2. **Magnesium Die Casting** - Laptop and mobile device housings - Automotive interior components - Aerospace structural parts 3. **Zinc Die Casting** - High-precision components - Decorative hardware - Electrical connectors #### **Secondary Applications** - **Hot forging dies** for aluminum and copper alloys - **Hot extrusion tools** for non-ferrous metals - **Plastic injection molds** for engineering polymers - **Hot work punches and mandrels** ### **Performance Comparison with Standard H13** | Performance Parameter | DIEVAR vs. Standard H13 | |----------------------|-------------------------| | **Thermal Fatigue Life** | +50-100% improvement | | **Heat Checking Resistance** | Superior crack initiation resistance | | **High-Temperature Hardness** | Better retention above 500°C | | **Toughness at Operating Temp** | 15-25% higher impact values | | **Polishing Characteristics** | Superior surface finish capability | | **Dimensional Stability** | Reduced distortion during heat treatment | ### **Machining and Fabrication** #### **Machining in Annealed Condition** - **Turning**: Good machinability with proper tool geometry - **Milling**: Recommended cutting speeds 60-100 m/min - **Drilling**: Use high-speed steel or carbide tools with sufficient coolant - **EDM**: Excellent performance with fine finishes #### **Grinding in Hardened Condition** - Use aluminum oxide or CBN wheels - Maintain adequate coolant flow - Employ light passes to avoid thermal damage - Recommended for final dimensional accuracy ### **Surface Treatments** - **Nitriding**: Gas or plasma nitriding for enhanced surface hardness (1000-1200 HV) - **PVD/CVD Coatings**: TiN, TiAlN, or DLC coatings for specific applications - **Polishing**: Capable of achieving mirror finishes (≤ 0.05 μm Ra) ### **Quality Assurance** - **ESR Process**: Ensures exceptional cleanliness and homogeneity - **Ultrasonic Testing**: Performed to strict internal standards - **Microstructure Control**: Guaranteed fine, uniform carbide distribution - **Traceability**: Full documentation from melt to final product ### **Available Product Forms** - ESR ingots and blocks - Precision ground flat stock - Black-rolled or peeled bars - Custom pre-machined components - Semi-finished die sets - Standard and custom sizes available ### **Technical Support Services** - Heat treatment recommendations - Application engineering support - Failure analysis services - Machining and fabrication guidelines - Customized metallurgical solutions ### **Industry Certifications** - ISO 9001:2015 Quality Management - ISO 14001:2015 Environmental Management - Material certifications per EN 10204 3.1/3.2 ### **Conclusion** Assab Steels DIEVAR represents the pinnacle of hot work tool steel technology for die-casting applications. Its optimized chemical composition combined with the ESR manufacturing process delivers unmatched performance in demanding aluminum, magnesium, and zinc die-casting operations. By significantly extending die life, reducing maintenance downtime, and improving part quality consistency, DIEVAR provides substantial return on investment for high-volume production environments. The steel's balanced combination of thermal fatigue resistance, high-temperature strength, and toughness makes it the material of choice for critical die-casting applications where reliability and productivity are paramount. -:- For detailed product information, please contact sales. -: Assab Steels DIEVAR Hot Work Steel Specification Dimensions Size： Diameter 20-1000 mm Length <7241 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 DIEVAR Hot Work Steel Properties -:- For detailed product information, please contact sales. -:

Applications of Assab Steel Flanges DIEVAR Hot Work Steel Flange -:- For detailed product information, please contact sales. -: Chemical Identifiers Assab Steel Flanges DIEVAR Hot Work Steel Flange -:- For detailed product information, please contact sales. -:

Packing of Assab Steel Flanges DIEVAR Hot Work 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 3712 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