JIS SKH2 Tungsten-Alloy High-Speed-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. -: JIS SKH2 Tungsten-Alloy High-Speed-Tool Steel Flange Product Information -:- For detailed product information, please contact sales. -: JIS SKH2 Tungsten-Alloy High-Speed-Tool Steel Flange Synonyms -:- For detailed product information, please contact sales. -:

JIS SKH2 Tungsten-Alloy High-Speed-Tool Steel Product Information -:- For detailed product information, please contact sales. -: **Product Name:** JIS SKH2 Tungsten-Alloy High-Speed Tool Steel **International Standard:** JIS G4403 (Japan Industrial Standard) - High-Speed Tool Steels --- ### **1. Overview** JIS SKH2 is a **tungsten-alloyed high-speed tool steel** representing the fundamental class of T-series (tungsten-based) high-speed steels. It is characterized by its **good red hardness, moderate wear resistance, and cost-effectiveness**. As one of the earliest high-speed steel compositions, SKH2 provides a balanced performance for general-purpose cutting applications where extreme heat or abrasion resistance is not the primary requirement. It maintains cutting efficiency at higher speeds than traditional carbon tool steels, making it suitable for a wide range of machining operations. --- ### **2. Chemical Composition (Typical Weight %)** | Element | Content (%) | |---------|-------------| | C | 0.70–0.85 | | Si | 0.20–0.40 | | Mn | 0.20–0.40 | | Cr | 3.50–4.50 | | W | 13.00–15.00 | | V | 0.80–1.20 | | Mo | ≤ 0.60 | | Co | ≤ 1.00 | | P (max) | 0.030 | | S (max) | 0.030 | *Balance: Iron (Fe).* --- ### **3. Physical & Mechanical Properties** - **Density:** ~8.10 g/cm³ - **Thermal Conductivity:** ~25 W/m·K (at 20°C) - **Coefficient of Thermal Expansion:** ~11.8 ×10⁻⁶ /K (20–500°C) - **Hardness (Annealed):** ≤ 269 HB - **Hardness (Hardened & Tempered):** 62–65 HRC (typical) - **Tempering Temperature Range:** 540–580°C (Double tempering recommended) - **Maximum Service Temperature:** ~550°C - **Key Features:** Balanced combination of hardness, toughness, and hot hardness for general high-speed steel applications. --- ### **4. Heat Treatment** - **Annealing:** Heat to 800–880°C, slow cool (10–20°C/h) to 600°C, then air cool. Annealed hardness should be ≤269 HB. - **Hardening (Quenching):** - **Preheat:** 800–850°C - **Austenitizing:** **1260–1290°C** (Precise temperature control needed) - **Quenching:** Oil, air, or salt bath quench - **Tempering:** **Double temper at 540–580°C** for 1–2 hours each, cooling to room temperature between tempers. Maximum hardness typically achieved at 560–570°C. --- ### **5. Key Features & Advantages** - **Good Red Hardness:** Maintains cutting edge at moderate elevated temperatures - **Balanced Performance:** Offers reasonable wear resistance with better toughness than higher-alloyed grades - **Cost-Effective:** More economical than cobalt-containing or higher vanadium grades - **Established Technology:** Well-understood heat treatment and manufacturing characteristics - **Good Grindability:** Better grindability compared to high-vanadium steels --- ### **6. Typical Applications** SKH2 is suitable for a variety of general-purpose cutting and forming tools: - **Cutting Tools:** Drills, taps, reamers, milling cutters, and broaches for machining **carbon steels, alloy steels, and cast irons** - **Turning Tools:** Single-point lathe tools for general turning operations - **Saw Blades:** Metal cutting band saw and hacksaw blades - **Woodworking Tools:** High-quality planer blades and cutter heads - **Forming Tools:** Gear cutters and shaping tools - **Punches and Dies:** For light to medium cold work applications - **Hand Tools:** High-quality files and chisels requiring good edge retention --- ### **7. Equivalent Steel Grades (International Standards)** - **ISO:** HS12-0-1-5 - **DIN (Germany):** 1.3354 / S12-0-1-5 - **AISI/SAE (USA):** T6 (similar in concept, though composition differs) - **GB (China):** W14Cr4VMn (similar composition) - **UNS:** T12006 --- ### **8. Machining & Fabrication Notes** - **Machining:** Best machined in annealed condition. Requires appropriate cutting parameters due to work-hardening tendency - **Grinding:** Standard aluminum oxide wheels can be used with adequate cooling to prevent overheating - **Welding:** Not recommended for fabrication due to cracking sensitivity. Specialized procedures with preheating required if necessary - **Surface Treatment:** Can be nitrided or coated (TiN, TiCN) to enhance surface properties for specific applications - **Forging:** Forge at 1050–900°C with careful temperature control; slow cooling after forging is essential --- ### **9. Summary** JIS SKH2 represents a **classical tungsten-based high-speed steel** that provides reliable performance for general-purpose cutting applications. While not offering the extreme hot hardness or wear resistance of more highly alloyed grades, it delivers a **well-balanced combination of properties** at a competitive cost. SKH2 continues to be relevant for tools requiring good all-around performance where the highest levels of abrasion resistance or red hardness are not critical. Its established processing characteristics and consistent performance make it a practical choice for many conventional high-speed steel tool applications. Conformity to JIS G4403 ensures material reliability for manufacturers and end-users. -:- For detailed product information, please contact sales. -: JIS SKH2 Tungsten-Alloy High-Speed-Tool Steel Specification Dimensions Size： Diameter 20-1000 mm Length <6808 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. -: JIS SKH2 Tungsten-Alloy High-Speed-Tool Steel Properties -:- For detailed product information, please contact sales. -:

Applications of JIS SKH2 Tungsten-Alloy High-Speed-Tool Steel Flange -:- For detailed product information, please contact sales. -: Chemical Identifiers JIS SKH2 Tungsten-Alloy High-Speed-Tool Steel Flange -:- For detailed product information, please contact sales. -:

Packing of JIS SKH2 Tungsten-Alloy High-Speed-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 3279 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