100Cr6 803J 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. -: Ovako 100Cr6 803J Steel Flange, Spheroidize annealing Product Information -:- For detailed product information, please contact sales. -: Ovako 100Cr6 803J Steel Flange, Spheroidize annealing Synonyms -:- For detailed product information, please contact sales. -:

Ovako 100Cr6 803J Steel, Spheroidize annealing Product Information -:- For detailed product information, please contact sales. -: # **Ovako 100Cr6 803J Steel – Spheroidize Annealed Condition** ## **Product Overview** Ovako 100Cr6 803J is a **specialized bearing steel** supplied in the **spheroidize annealed condition**, engineered to provide **exceptional resistance to fatigue crack propagation and enhanced operational reliability** in demanding applications. The **"J"** designation represents a steel grade optimized with specific micro-alloying and processing controls aimed at improving **toughness and damage tolerance**, particularly under high-stress, cyclic loading conditions. This grade focuses on maximizing the steel's ability to withstand and arrest crack initiation and growth, making it ideal for components where unpredictable overloads or impact stresses are a concern alongside standard fatigue requirements. ## **Key Features & Benefits** * **Enhanced Toughness and Crack Propagation Resistance:** The primary advantage of the 803J grade is its **improved fracture toughness and ability to resist crack growth** compared to standard 100Cr6 grades. This is achieved through precise control of carbide morphology, grain refinement, and potentially targeted micro-alloying, resulting in a material that offers greater safety margins against catastrophic failure. * **Superior Spheroidized Microstructure:** The annealing process produces a fine, uniform dispersion of spheroidal carbides within a soft ferrite matrix. This structure not only ensures excellent machinability but also provides an optimal foundation for developing a tough, homogeneous microstructure after final heat treatment, free from stress-concentrating features. * **Good Fatigue Life with Improved Reliability:** While maintaining the good basic fatigue properties of 100Cr6, the 803J grade is designed to exhibit **more stable and predictable fatigue behavior**, especially in the presence of material imperfections or surface damage. It aims to reduce the statistical scatter in fatigue life data, enhancing design reliability. * **Balanced Performance for Demanding Conditions:** This grade is particularly suited for applications where components may experience **shock loads, variable stress amplitudes, or operate in environments where minor damage is possible**. It provides a robust material solution that can tolerate higher stress intensities without failure. * **Excellent Machinability and Heat Treatment Response:** The spheroidize annealed condition (~200 HB) offers excellent machinability for complex component manufacturing. The homogeneous structure promotes uniform hardening response with minimal distortion during subsequent heat treatment. ## **International Standards & Designations** The 803J grade represents a toughness-enhanced variant within the bearing steel family. | Region/Standard | Standard Designation | Equivalent / Similar Grade | Key Characteristic | | :--- | :--- | :--- | :--- | | **EUR (EN)** | **1.3505** (100Cr6) | Base material standard with enhanced toughness properties. | Toughness-optimized grade. | | **ISO** | **ISO 683-17: 100Cr6** | Standard for through-hardening bearing steel. | Improved toughness variant. | | **USA (AISI/ASTM)** | **52100 (Toughness Modified)** | Sometimes referred to in industry as a high-toughness 52100 variant. | | | **Ovako Designation** | **803J** | **"J" denotes optimization for improved toughness and crack propagation resistance.** | | ## **Chemical Composition (Typical - %)** The composition adheres to 100Cr6 specifications but may include subtle adjustments or tighter controls to enhance toughness. | Element | Content (%) | Role & Special Characteristic | | :--- | :--- | :--- | | **Carbon (C)** | 0.98 - 1.10 | Provides base hardness. Distribution and carbide morphology are controlled to benefit toughness. | | **Chromium (Cr)** | 1.35 - 1.60 | Standard content for hardenability and wear resistance. | | **Manganese (Mn)** | 0.25 - 0.45 | Provides hardenability. May be controlled to lower end of range to benefit toughness. | | **Silicon (Si)** | 0.15 - 0.35 | Deoxidizer and solid solution strengthener. | | **Phosphorus (P)** | **≤ 0.015** | Very low to maximize toughness and fatigue strength. | | **Sulfur (S)** | **≤ 0.008** | Low to minimize MnS inclusions that can act as crack initiators. | | **Nickel (Ni)** | May be added (~0.10-0.25%) | **Potential micro-alloying element.** Nickel is a potent toughener, improving fracture toughness and low-temperature performance without compromising hardenability. | | **Molybdenum (Mo)** | May be added (trace) | Can refine grain structure and improve hardenability/toughness balance. | | **Oxygen [O]** | < 15 ppm | Controlled low oxygen content. | | **Iron (Fe)** | Balance | | ## **Physical & Mechanical Properties (Spheroidize Annealed Condition)** * **Delivery Hardness:** **190 - 215 HB** * **Microstructure:** Uniform, fine **spheroidized carbides** in ferrite matrix. Potentially finer prior austenite grain size. * **Tensile Strength:** ~650 - 770 MPa * **Yield Strength (Rp0.2):** ~400 - 510 MPa * **Elongation (A5):** ~20 - 30% * **Toughness Indicator (Annealed):** Good ductility and reduction of area. ## **Properties After Hardening & Tempering (Indicative)** * **Final Hardness (Quenched & Tempered):** **59 - 63 HRC** * **Fracture Toughness (KIC):** **Improved** over standard 100Cr6 grades at equivalent hardness. * **Impact Toughness:** Higher Charpy V-notch values, particularly at lower temperatures. * **Fatigue Crack Growth Rate:** Reduced, indicating better resistance to crack propagation under cyclic loading. ## **Typical Applications** This spheroidize annealed material is specified for components operating under demanding conditions where toughness is critical. * **Large-Diameter Bearings for Heavy Machinery:** Slewing rings for cranes and excavators, backup roll bearings in rolling mills, where impact loads are possible. * **Bearings in Harsh Environments:** Components for mining, earth-moving, and agricultural equipment subject to shock and contamination. * **Critical Automotive Safety Components:** Bearings in steering systems, turbochargers, or other drivetrain elements where reliability is paramount. * **Components for Cold Environments:** Applications where low-temperature toughness is a requirement. * **High-Value Gearing and Shafts:** Where resistance to crack initiation from stress concentrations (e.g., keyways, fillets) is important. ## **Processing Guidelines** * **Machining:** Excellent machinability in the annealed state. Standard practices for annealed 100Cr6 apply. * **Heat Treatment (Customer Process):** Standard 100Cr6 practices are applicable. The material's enhanced hardenability (if Ni/Mo added) may allow for slightly lower austenitizing temperatures or more forgiving quenching, contributing to lower residual stress. 1. **Austenitizing:** 830-850°C. 2. **Quenching:** Oil quenching. 3. **Tempering:** Double tempering recommended. Tempering temperatures at the higher end of the range (e.g., 180-220°C) can be used to further optimize the toughness-hardness balance. ## **Summary** **Ovako 100Cr6 803J Steel in the Spheroidize Annealed condition** is a **strategically engineered material focused on damage tolerance and operational safety**. It goes beyond standard fatigue life optimization by specifically enhancing the steel's inherent toughness and resistance to crack propagation. This provides engineers with a critical tool for designing components that must withstand unpredictable loading scenarios, shock, or operate with high reliability in challenging environments. For applications where preventing catastrophic failure is as important as maximizing fatigue life, the 803J grade offers a robust and reliable material solution, adding a vital layer of safety and performance to critical mechanical systems. -:- For detailed product information, please contact sales. -: Ovako 100Cr6 803J Steel, Spheroidize annealing Specification Dimensions Size： Diameter 20-1000 mm Length <5279 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. -: Ovako 100Cr6 803J Steel, Spheroidize annealing Properties -:- For detailed product information, please contact sales. -:

Applications of Ovako 100Cr6 803J Steel Flange, Spheroidize annealing -:- For detailed product information, please contact sales. -: Chemical Identifiers Ovako 100Cr6 803J Steel Flange, Spheroidize annealing -:- For detailed product information, please contact sales. -:

Packing of Ovako 100Cr6 803J Steel Flange, Spheroidize annealing -:- 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 1750 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