100CrMnSi6-4 837R 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 100CrMnSi6-4 837R Steel Flange Product Information -:- For detailed product information, please contact sales. -: Ovako 100CrMnSi6-4 837R Steel Flange Synonyms -:- For detailed product information, please contact sales. -:

Ovako 100CrMnSi6-4 837R Steel Product Information -:- For detailed product information, please contact sales. -: # **Ovako 100CrMnSi6-4 837R Steel** ## **Product Overview** Ovako 100CrMnSi6-4 837R is a **specialized, high-performance bearing steel** characterized by its **elevated silicon content for improved strength and toughness**. This alloy represents a specific variant within the high-silicon bearing steel family, with **chromium, manganese, and silicon levels optimized for demanding mechanical applications**. The **"837R"** designation indicates Ovako's controlled quality grade for this chemistry, with the **"R"** suffix often signifying a specific processing route or quality level (e.g., "Refined"). This steel is designed to provide **superior mechanical properties** compared to standard 100Cr6, particularly in terms of **tensile strength, tempering resistance, and toughness at high hardness**, making it ideal for critical components under extreme stress. ## **Key Features & Benefits** * **Enhanced Strength and Toughness Balance:** The high silicon content (approximately 0.5-0.7%) provides powerful solid solution strengthening of the ferritic/martensitic matrix. This results in **higher tensile and yield strength** at equivalent hardness levels compared to standard grades, while silicon's role in suppressing brittle cementite formation also contributes to **improved fracture toughness**. * **Superior Temper Resistance:** Silicon significantly increases the steel's resistance to softening during tempering. This allows components to **maintain higher hardness at elevated operating temperatures** or enables the use of higher tempering temperatures to improve toughness without excessive loss of hardness. * **Good Wear Resistance and Hardness Potential:** With a carbon content around 1% and sufficient chromium, the steel can achieve high hardness (**60-64 HRC**) after proper heat treatment, providing excellent resistance to abrasive wear and contact fatigue. * **Controlled Quality for Consistent Performance:** The 837R quality grade ensures consistent chemical composition, micro-cleanliness, and processing, leading to predictable hardenability and reliable mechanical properties in the final component. * **Versatile Applications:** Suitable for both through-hardening and, in some cases, specialized surface hardening processes for components requiring a unique combination of core properties and surface durability. ## **International Standards & Designations** This steel corresponds to a specific silicon-enhanced bearing steel grade. | Region/Standard | Standard Designation | Common Name / Equivalent | | :--- | :--- | :--- | | **EUR (EN)** | **1.3538** (Approximate) | The likely standard designation. The name **100CrMnSi6-4** describes its typical chemistry (C~1%, Cr~1.5%, Mn~0.8%, Si~0.6%). *Note: Exact mapping to EN may vary.* | | **Germany (DIN / W-Nr.)** | **100CrMnSi6-4 / ~1.3538** | Similar variant. | | **ISO** | **ISO 683-17: 100CrMnSi4-6** | Recognized variant within the bearing steel standard. | | **Ovako Designation** | **837R** | "837" correlates with the approximate material number; **"R"** denotes a specific, refined quality level or processing route within Ovako. | ## **Chemical Composition (Typical - %)** The composition is defined by balanced alloying with elevated silicon. | Element | Content (%) | Role | | :--- | :--- | :--- | | **Carbon (C)** | 0.95 - 1.10 | Provides the basis for high-carbon martensite and carbide formation. | | **Chromium (Cr)** | 1.40 - 1.70 | Enhances hardenability and promotes wear-resistant chromium carbides. | | **Manganese (Mn)** | 0.60 - 1.00 | Increases hardenability and strength. | | **Silicon (Si)** | **0.50 - 0.70** | **Key alloying element.** Powerful solid solution strengthener; significantly increases tempering resistance; improves toughness. | | **Sulfur (S)** | ≤ 0.010 | Kept low for good transverse properties. | | **Phosphorus (P)** | ≤ 0.020 | Kept low. | | **Iron (Fe)** | Balance | | ## **Physical & Mechanical Properties (Typical After Hardening & Tempering)** *Properties are highly dependent on heat treatment parameters (austenitizing temperature, quenching medium, tempering temperature).* * **Hardness (Hardened & Tempered):** **59 - 63 HRC** (typical for bearing applications) * **Ultimate Tensile Strength (UTS):** **2000 - 2300 MPa** * **Yield Strength (0.2% offset):** **1600 - 1900 MPa** (Benefiting from Si strengthening) * **Elongation at Break:** ~2-5% * **Reduction of Area:** ~15-30% * **Impact Toughness (Charpy V-notch):** Typically higher than standard 100Cr6 at equivalent hardness due to Si effect. * **Fatigue Strength:** Good rolling contact and bending fatigue resistance. ## **Typical Applications** This material is specified for high-performance components where standard 100Cr6 may not provide sufficient strength or toughness. * **High-Stress Rolling Bearings:** Large-diameter bearings, slewing rings, and bearing components in wind turbines, heavy machinery, and gearboxes subjected to high dynamic loads. * **Critical Gearing Components:** Gears and pinions requiring high surface durability and a strong, tough core to resist tooth bending fatigue. * **Precision Machine Tool Components:** Spindles, arbors, and heavy-duty rollers requiring high stiffness, wear resistance, and dimensional stability. * **Automotive Performance and Racing Components:** High-load transmission parts, camshafts, and valve train components. * **Specialized Tooling and Wear Parts:** Dies, forming tools, and wear plates where a combination of high hardness and good toughness is needed to resist chipping and cracking. ## **Processing Guidelines (General)** * **Machining:** Best performed in a soft-annealed or spheroidize annealed condition (~200 HB). * **Heat Treatment:** 1. **Preheating:** Recommended to ~650-700°C. 2. **Austenitizing:** ~830-860°C in a protective atmosphere. Soaking time is important for carbide dissolution. 3. **Quenching:** Oil quenching is typical. High hardenability allows for good properties in moderate sections. 4. **Tempering:** **Double tempering is strongly recommended.** Due to high Si content, tempering in the range of 180-220°C can optimize toughness without significant hardness loss. The exact temperature depends on the desired final hardness. * **Grinding:** Performed after hardening to achieve final dimensions and surface finish. Proper cooling is essential to avoid grinding burns. ## **Summary** **Ovako 100CrMnSi6-4 837R Steel** is a **high-performance alloy engineered for applications demanding more than standard bearing steel can offer**. Its elevated silicon content provides a distinct advantage in terms of **inherent strength, tempering stability, and toughness**, creating a material that excels under high-stress conditions. For engineers designing critical components where failure is not an option—such as in large-scale energy infrastructure, heavy industrial equipment, or high-performance mechanical systems—the 837R grade provides a reliable, enhanced material solution. It represents a strategic choice when the design requires pushing the limits of strength and durability within the through-hardened bearing steel family. -:- For detailed product information, please contact sales. -: Ovako 100CrMnSi6-4 837R Steel Specification Dimensions Size： Diameter 20-1000 mm Length <5290 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 100CrMnSi6-4 837R Steel Properties -:- For detailed product information, please contact sales. -:

Applications of Ovako 100CrMnSi6-4 837R Steel Flange -:- For detailed product information, please contact sales. -: Chemical Identifiers Ovako 100CrMnSi6-4 837R Steel Flange -:- For detailed product information, please contact sales. -:

Packing of Ovako 100CrMnSi6-4 837R 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 1761 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