Schmolz + Bickenbach,Cryodur® 2379 (D-2) Cold Work Die 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. -: Schmolz + Bickenbach Cryodur® 2379 (D-2) Cold Work Die Steel Flange Product Information -:- For detailed product information, please contact sales. -: Schmolz + Bickenbach Cryodur® 2379 (D-2) Cold Work Die Steel Flange Synonyms -:- For detailed product information, please contact sales. -:

Schmolz + Bickenbach Cryodur® 2379 (D-2) Cold Work Die Steel Product Information -:- For detailed product information, please contact sales. -: ### **Schmolz + Bickenbach Cryodur® 2379 (D-2) - High-Carbon High-Chromium Cold Work Tool Steel** **Introduction** Cryodur® 2379 is a premium high-carbon, high-chromium ledeburitic (air-hardening) cold work tool steel manufactured by Schmolz + Bickenbach, a global leader in specialty steel production. It corresponds to the classic AISI D2 / DIN 1.2379 grade. This steel is renowned for its exceptional **wear resistance**, high **compressive strength**, and good **dimensional stability** during heat treatment. It is a versatile choice for demanding applications where resistance to abrasive wear and moderate corrosion is paramount. **Key Features & Advantages** * **Outstanding Wear Resistance:** Primarily due to its high carbon and chromium content, which forms a large volume of hard, complex carbides in the microstructure. * **Good Dimensional Stability:** Exhibits minimal distortion during the air or oil quenching process, crucial for precision tools and dies. * **High Compressive Strength:** Can withstand high pressures without deformation, suitable for forming and stamping applications. * **Moderate Corrosion Resistance:** The high chromium content provides better corrosion resistance compared to lower-alloyed tool steels (like O1 or A2), though it is not a stainless steel. * **Excellent Through-Hardenability:** Can be hardened to high uniform hardness in large cross-sections. **International Standard Designations** | Standard | Designation | | :--- | :--- | | **AISI** | D2 | | **DIN / EN / W-Nr.** | 1.2379 / X153CrMoV12 | | **JIS** | SKD11 | | **ISO** | 160CrMoV12 | | **GB (China)** | Cr12Mo1V1 | **Chemical Composition (%)** The typical composition is fundamental to Cryodur® 2379's properties. | Carbon (C) | Chromium (Cr) | Molybdenum (Mo) | Vanadium (V) | Silicon (Si) | Manganese (Mn) | | :---: | :---: | :---: | :---: | :---: | :---: | | 1.50 - 1.60 | 11.00 - 12.00 | 0.70 - 0.90 | 0.90 - 1.10 | 0.10 - 0.40 | 0.15 - 0.45 | *Note: Iron (Fe) constitutes the remainder. Small amounts of other elements like Phosphorus (P) and Sulfur (S) are kept at very low levels.* **Physical & Mechanical Properties** *Typical values at room temperature in annealed & hardened conditions.* | Property | Value / Condition | | :--- | :--- | | **Density** | 7.70 g/cm³ | | **Thermal Conductivity** | ~20.0 W/(m·K) (at 20°C) | | **Coefficient of Thermal Expansion** | ~10.5 x 10⁻⁶/K (20-200°C) | | **Hardness (Annealed)** | ≤ 250 HB | | **Hardness (Hardened & Tempered)** | 58 - 62 HRC (typical working hardness, depends on tempering temperature) | | **Elastic Modulus** | ~210 GPa | **Heat Treatment** * **Soft Annealing:** Heat to 780 - 800°C, slow cool to 650°C, then air cool. Target hardness: ≤ 250 HB. * **Stress Relieving (after machining):** 600 - 650°C, slow cool. * **Hardening:** Pre-heat at 750-800°C, then austenitize at **1020 - 1040°C** (exact temperature depends on desired toughness vs. wear resistance). Soak adequately, then quench in **air (preferred for minimal distortion)** or oil. * **Tempering:** **Mandatory immediately after quenching.** Typically double or triple tempered at **180 - 250°C** for 58-62 HRC, or at **400 - 540°C** for lower hardness (54-58 HRC) with increased toughness. *Note: Avoid the tempering range of 250-400°C due to risk of decreased toughness.* **Typical Applications** Cryodur® 2379 (D-2) is ideally suited for long-run production tools subjected to severe abrasive wear. * **Blanking & Punching Dies:** For sheet metal, particularly for abrasive materials (e.g., plastics, composites, fiber-reinforced materials, pre-coated metals). * **Forming Tools & Rolls:** Cold forming rolls, thread rolling dies, bending tools. * **Shear & Slitter Knives:** Industrial knives for cutting hard or abrasive materials. * **Powder Compaction Dies:** For compacting metal or ceramic powders. * **Precision Gauges & Measuring Tools:** Where dimensional stability and wear life are critical. * **Other Tooling:** Lamination dies, drawing dies, and wear plates. **Availability** Schmolz + Bickenbach supplies Cryodur® 2379 in various forms: forged and rolled bars, flats, blocks, and pre-finished precision ground stock. **Disclaimer:** This datasheet provides general information. For critical applications, always consult the official technical data sheets from Schmolz + Bickenbach and rely on the expertise of qualified metallurgists and tooling engineers for specific heat treatment and machining parameters. -:- For detailed product information, please contact sales. -: Schmolz + Bickenbach Cryodur® 2379 (D-2) Cold Work Die Steel Specification Dimensions Size： Diameter 20-1000 mm Length <7139 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. -: Schmolz + Bickenbach Cryodur® 2379 (D-2) Cold Work Die Steel Properties -:- For detailed product information, please contact sales. -:

Applications of Schmolz + Bickenbach Cryodur® 2379 (D-2) Cold Work Die Steel Flange -:- For detailed product information, please contact sales. -: Chemical Identifiers Schmolz + Bickenbach Cryodur® 2379 (D-2) Cold Work Die Steel Flange -:- For detailed product information, please contact sales. -:

Packing of Schmolz + Bickenbach Cryodur® 2379 (D-2) Cold Work Die 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 3610 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