Sandvik,20C Strip 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. -: Sandvik 20C Strip Steel Flange Product Information -:- For detailed product information, please contact sales. -: Sandvik 20C Strip Steel Flange Synonyms -:- For detailed product information, please contact sales. -:

Sandvik 20C Strip Steel Product Information -:- For detailed product information, please contact sales. -: ## **Sandvik 20C Strip Steel – Precision Low-Carbon Case-Hardening Steel for Complex Forming** ### **Product Overview** Sandvik 20C is a high-quality, **low-carbon case-hardening steel strip** engineered for applications requiring excellent formability in the soft state followed by surface hardening to achieve a wear-resistant, durable component. Characterized by its consistent microstructure, superior surface finish, and precise dimensional tolerances, 20C is designed for manufacturers who need to create complex shapes through deep drawing, stamping, or bending before applying carburizing or carbonitriding heat treatments. It represents an optimal balance between fabrication ease and final performance. ### **Key Advantages** * **Excellent Formability:** Very low carbon content ensures exceptional ductility and malleability in the annealed state, allowing for severe deformation without cracking. * **Superior Surface Quality:** Produced with a clean, uniform surface ideal for subsequent plating, coating, or direct heat treatment without extensive preparation. * **Controlled Dimensional Consistency:** Tight thickness and width tolerances support high-volume precision manufacturing with minimal adjustment. * **Effective Case Hardening Response:** Readily absorbs carbon during carburizing to develop a hard, wear-resistant surface (typically 58-62 HRC) while maintaining a tough, ductile core (~20-30 HRC). * **Cost-Effective Performance:** Provides an economical solution for components requiring high surface hardness and wear resistance without the need for through-hardening alloy steels. ### **Chemical Composition (Typical, wt%)** The composition prioritizes formability while containing elements that promote effective case hardening. | Element | Content (%) | Element | Content (%) | | :--- | :--- | :--- | :--- | | **Carbon (C)** | 0.17 - 0.23 | **Manganese (Mn)** | 0.60 - 0.90 | | **Silicon (Si)** | ≤ 0.30 | **Phosphorus (P)** | ≤ 0.025 | | **Sulfur (S)** | ≤ 0.025 | **Aluminum (Al)*** | 0.020 - 0.050 | | **Iron (Fe)** | Balance | | | ***Note:** Aluminum is often added as a grain refiner (Al-killed steel) to ensure a fine, uniform ferritic microstructure, enhancing formability and post-heat treatment properties.* ### **Physical & Mechanical Properties** #### **Properties in Annealed Condition (as supplied strip):** * **Density:** 7.87 g/cm³ * **Modulus of Elasticity (E):** 210 GPa * **Tensile Strength (Rm):** 350 - 500 MPa * **Yield Strength (Rp0.2):** 250 - 350 MPa * **Elongation (A₅₀):** ≥ 30% * **Hardness:** 110 - 150 HB * **Grain Size:** Typically ASTM 8-10 (fine grain) #### **Properties after Case Hardening (e.g., Carburizing & Quenching):** * **Surface Hardness:** **58 - 62 HRC** (achievable case depth depends on cycle: e.g., 0.3-1.0 mm) * **Core Hardness:** 20 - 30 HRC (providing good toughness and impact resistance) * **Core Tensile Strength:** ~800 - 1000 MPa #### **Hardenability & Microstructure:** * Exhibits a shallow Jominy hardenability curve, suitable for case hardening where a soft, tough core is desired. * Fine prior austenite grain size minimizes distortion during quenching and allows for sharper case-core transition. ### **International Standards & Approvals** Sandvik 20C corresponds to widely recognized international case-hardening steel grades. * **Sandvik Grade:** **20C** * **Direct Equivalent Standards:** * **EN / DIN:** 1.0460 (C22E / C22R) * **AISI/SAE:** 1022 (Modified) * **UNS:** G10220 * **ISO:** 683-18: Case-hardening steels * **Common Specifications:** Often supplied to meet **EN 10132** for cold rolled narrow strip. ### **Product Applications** 20C is the material of choice for components that are heavily formed before requiring a hard, wear-resistant surface. * **Automotive:** * Window regulator components * Seat adjustment gears and cams * Fasteners and clips requiring forming * Small transmission and steering components * **Industrial & Mechanical Engineering:** * Gears, pinions, and sprockets (small to medium size) * Bushings and bearings * Clutch parts and lever arms * Guides and wear plates * **Consumer Goods & Hardware:** * Lock components (tumblers, barrels) * Tool parts (e.g., wrench jaws, adjustable spanner components) * Appliance gears and levers * Furniture mechanisms * **General Fasteners & Small Parts:** * Custom bolts, screws, and rivets that undergo cold heading * Springs that require forming before heat treatment ### **Processing Guidelines** * **Forming (Annealed State):** Excellent for **deep drawing, stamping, bending, and cold heading**. No intermediate annealing is typically required for most shapes. * **Machining:** Good machinability in the annealed state. Produces short chips. Pre-hardening machining is standard. * **Heat Treatment – Case Hardening:** 1. **Carburizing/Carbonitriding:** Typically at 880-930°C in a carbon-rich atmosphere. 2. **Quenching:** Direct oil quenching or reheating to 780-820°C followed by quenching. 3. **Tempering:** Low temperature (150-200°C) to relieve quenching stresses and improve toughness. * **Alternative Processing:** Can also be through-hardened for simpler parts, though core strength will be lower than alloy steels. * **Surface Treatment:** Excellent substrate for **electroplating (zinc, nickel, chromium), phosphating, or painting** after heat treatment and cleaning. ### **Availability** Sandvik supplies 20C as cold-rolled precision strip, optimized for metal forming industries. * **Thickness:** Typically 0.5 mm to 5.0 mm * **Width:** Up to 330 mm (standard mill capacity) * **Condition:** Soft Annealed (A) or Skin-Passed (SP) for optimal flatness. * **Surface Finish:** Bright (2B), matte, or with a temporary rust preventive oil. * **Packaging:** Coils on carriers, or precision-cut blanks. --- **Design & Manufacturing Note:** The success of a case-hardened component depends on the synergy between material, part design, and heat treatment process. **Core hardness and case depth must be specified based on the part's function and loading.** For critical applications, prototyping and testing are strongly recommended. Consult Sandvik's technical experts for guidance on forming limits, heat treatment specifications, and to obtain detailed continuous cooling transformation (CCT) diagrams for the specific strip thickness being used. -:- For detailed product information, please contact sales. -: Sandvik 20C Strip Steel Specification Dimensions Size： Diameter 20-1000 mm Length <7446 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. -: Sandvik 20C Strip Steel Properties -:- For detailed product information, please contact sales. -:

Applications of Sandvik 20C Strip Steel Flange -:- For detailed product information, please contact sales. -: Chemical Identifiers Sandvik 20C Strip Steel Flange -:- For detailed product information, please contact sales. -:

Packing of Sandvik 20C Strip 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 3917 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