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

Ovako 100Cr6 803P Steel, Spheroidize annealing Product Information -:- For detailed product information, please contact sales. -: # **Ovako 100Cr6 803P Steel – Spheroidize Annealed Condition** ## **Product Overview** Ovako 100Cr6 803P is a premium-grade, high-carbon chromium bearing steel supplied in a **spheroidize annealed condition**, specifically engineered for applications demanding **exceptional dimensional stability and predictable heat treatment response**. The **"803P"** designation represents Ovako's highest tier of dimensional precision and microstructural consistency, achieved through specialized processing that refines the steel's behavior during subsequent hardening operations. Unlike grades optimized for machinability or extreme cleanliness, the 803P grade focuses on minimizing distortion and ensuring uniform property distribution, making it the ideal choice for manufacturing large, complex, or thin-walled precision components where shape retention is critical. ## **Key Features & Benefits** * **Superior Dimensional Stability:** The core value proposition of 803P steel lies in its exceptional ability to maintain shape and dimensions during heat treatment. Through precise control of chemical segregation and a homogeneous spheroidized microstructure, this grade exhibits **minimal and predictable distortion** during quenching, reducing scrap rates and the need for extensive post-hardening machining. * **Homogeneous Microstructure:** The spheroidize annealing process produces a highly uniform distribution of fine, globular carbides within a soft ferrite matrix. This uniformity ensures **consistent hardenability and transformation behavior** throughout the entire component cross-section, eliminating soft spots and irregular property gradients. * **Excellent Grindability & Polishability:** The consistent carbide structure and controlled hardness in the annealed state (~200 HB) provide excellent conditions for machining and, more importantly, for subsequent grinding operations after hardening. This results in better surface finish, reduced grinding time, and lower risk of thermal damage during finishing. * **Predictable Heat Treatment Response:** Engineers can rely on highly consistent transformation characteristics (Ms temperature, hardenability) from batch to batch, enabling more accurate simulation of heat treatment processes and reliable prediction of final component dimensions. * **Optimized for Large/Complex Components:** Particularly valuable for manufacturing large bearing rings, thin-section components, and asymmetrical parts where differential cooling during quenching would normally cause unacceptable distortion in standard grades. ## **International Standards & Designations** The 803P grade represents a premium variant within standard bearing steel specifications, emphasizing dimensional control. | Region/Standard | Standard Designation | Equivalent / Similar Grade | Key Characteristic | | :--- | :--- | :--- | :--- | | **EUR (EN)** | **1.3505** (100Cr6) | Base material standard with enhanced processing. | Premium dimensional stability grade. | | **ISO** | **ISO 683-17: 100Cr6** | Standard for through-hardening bearing steel. | Special quality with dimensional focus. | | **USA (AISI/ASTM)** | **52100** (Premium Grade) | Often referred to as "52100 with low distortion characteristics". | | | **Japan (JIS)** | **SUJ2** (Special quality) | | | | **Germany (DIN / W-Nr.)** | **100Cr6 / 1.3505** | With special processing designations. | | | **Ovako Designation** | **803P** | "P" denotes optimized dimensional precision and stability during heat treatment. | | ## **Chemical Composition (Typical - %)** The composition maintains strict 100Cr6 specifications with enhanced control over homogeneity. | Element | Content (%) | Role & Special Characteristic | | :--- | :--- | :--- | | **Carbon (C)** | 0.98 - 1.10 | Provides high hardness and wear resistance through martensite and carbide formation upon hardening. | | **Chromium (Cr)** | 1.35 - 1.60 | Improves hardenability, promotes fine carbide formation, and enhances wear resistance. | | **Manganese (Mn)** | 0.25 - 0.45 | Increases hardenability while maintaining good dimensional stability when properly controlled. | | **Silicon (Si)** | 0.15 - 0.35 | Deoxidizer, increases strength and tempering resistance. Content optimized for minimal distortion. | | **Phosphorus (P)** | ≤ 0.015 | Kept very low to improve toughness and reduce distortion sensitivity. | | **Sulfur (S)** | ≤ 0.008 | Low sulfur content minimizes MnS inclusions that can cause uneven transformation and distortion. | | **Residual Elements (Ni, Cu, Mo)** | Tightly controlled | Minimal variation to ensure consistent transformation behavior. | | **Segregation Index** | Exceptionally low | Key to dimensional stability - ensures uniform chemistry throughout the cross-section. | | **Iron (Fe)** | Balance | | ## **Physical & Mechanical Properties (Spheroidize Annealed Condition)** * **Delivery Hardness:** **190 - 215 HB** (Tighter range than standard grades) * **Microstructure:** Exceptionally uniform **spheroidized carbide** distribution in ferrite matrix. Carbide size distribution is narrow and controlled. * **Tensile Strength:** ~650 - 750 MPa * **Yield Strength (Rp0.2):** ~400 - 500 MPa * **Elongation (A5):** ~20 - 30% * **Reduction of Area (Z):** ~50 - 65% * **Distortion Factor:** Significantly lower than standard 100Cr6 grades during quenching (typically 30-50% improvement in dimensional stability) * **Density:** 7.83 g/cm³ * **Thermal Conductivity:** ~46 W/(m·K) at 20°C * **Coefficient of Thermal Expansion:** ~11.5 x 10⁻⁶/K (20-100°C) ## **Properties After Hardening & Tempering (Indicative)** * **Final Hardness (Quenched & Tempered):** **60 - 64 HRC** (with excellent uniformity) * **Dimensional Change:** Highly predictable, typically within ±0.05% for properly designed components * **Residual Stress Distribution:** More uniform and symmetric than standard grades * **Grinding Performance:** Excellent due to uniform carbide distribution and consistent hardness ## **Typical Applications** This premium spheroidize annealed material is specified for precision components where dimensional control is paramount. * **Large Precision Bearing Rings:** Main bearings for wind turbines, large industrial gearboxes, and aerospace applications where post-hardening machining is limited or impossible. * **Thin-Walled & Complex Components:** Bearing cages, special washers, and complex-shaped precision parts susceptible to distortion. * **Machine Tool Components:** High-precision spindles, arbors, and tool holders requiring minimal runout after heat treatment. * **Aerospace Bearing Components:** Critical bearing elements where dimensional precision directly affects performance and reliability. * **Medical Device Components:** Surgical tool bearings and precision instrumentation parts requiring exact dimensions. * **Automotive Transmission Components:** High-precision gears and bearing races for premium automotive applications. ## **Processing Guidelines** * **Machining:** Perform all machining in the soft, spheroidize annealed condition. The uniform hardness and microstructure ensure consistent cutting forces and predictable tool wear. For optimal dimensional stability, consider stress-relief annealing after rough machining for highly complex parts. * **Heat Treatment Best Practices:** 1. **Preheating:** Essential - use stepped preheating (450°C, then 650°C) to minimize thermal gradients. 2. **Austenitizing:** 830-850°C in precisely controlled atmosphere or vacuum furnace. Uniform temperature distribution is critical. 3. **Quenching:** Use agitated oil with controlled temperature. For large/thin parts, consider high-pressure gas quenching for more uniform cooling. 4. **Tempering:** Minimum double tempering at 150-200°C for stress relief and dimensional stabilization. * **Grinding:** After hardening, the uniform microstructure allows for stable grinding with reduced risk of thermal distortion or cracking. Still employ proper grinding techniques with adequate coolant. ## **Quality Assurance** * **Dimensional Monitoring:** Components should be measured at multiple stages (after machining, after heat treatment) to establish distortion patterns. * **Microstructure Analysis:** Regular checks of carbide distribution and size in annealed condition. * **Hardness Mapping:** Verify uniformity of hardness in annealed state and after heat treatment. ## **Summary** **Ovako 100Cr6 803P Steel in the Spheroidize Annealed condition** represents the **pinnacle of dimensional control** in bearing steel technology. It transforms the challenge of heat treatment distortion from an unpredictable variable into a manageable, predictable parameter. By offering exceptional microstructural homogeneity and consistent transformation behavior, this grade enables manufacturers to produce precision components with tighter tolerances, reduced rework, and higher reliability. For applications where "form" is as critical as "function"—where the precise shape of a hardened component determines its performance—803P provides an engineering solution that balances material performance with manufacturing precision. It is the definitive choice when every micron of dimensional accuracy matters in the final hardened component. -:- For detailed product information, please contact sales. -: Ovako 100Cr6 803P Steel, Spheroidize annealing Specification Dimensions Size： Diameter 20-1000 mm Length <5263 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 803P Steel, Spheroidize annealing Properties -:- For detailed product information, please contact sales. -:

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

Packing of Ovako 100Cr6 803P 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 1734 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