Ovako C45 SB1671 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 C45 SB1671 Steel Flange Product Information -:- For detailed product information, please contact sales. -: Ovako C45 SB1671 Steel Flange Synonyms -:- For detailed product information, please contact sales. -:

Ovako C45 SB1671 Steel Product Information -:- For detailed product information, please contact sales. -: # **Product Introduction: Ovako C45 SB1671 Steel Bar** **Ovako C45 SB1671** is a high-performance **non-boron, hardenability-controlled engineering steel bar** produced by Ovako under their stringent internal SB (Special Bar) specifications. This grade represents a **premium-quality medium-carbon steel** engineered for applications requiring precise and consistent response to heat treatment, particularly through-hardening (quenching and tempering), where predictable and uniform mechanical properties are critical. The SB1671 designation signifies a steel with **guaranteed hardenability characteristics**, achieved through tight control of chemical composition rather than boron addition. It is optimized for components that undergo demanding machining operations prior to final heat treatment, where excellent machinability, superior surface quality, and reliable post-hardening performance are essential. This grade bridges the gap between standard commodity steels and highly alloyed grades, offering enhanced performance with excellent cost-effectiveness. --- ## **1. Chemical Composition (Per Ovako SB1671 Specification)** The composition follows the European C45 standard with enhanced controls on key elements to ensure consistent hardenability without boron addition. | Element | Carbon (C) | Silicon (Si) | Manganese (Mn) | Phosphorus (P) | Sulfur (S) | Chromium (Cr) | **Hardenability Control** | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | **Content** | 0.42 - 0.50 | 0.15 - 0.40 | **0.60 - 0.90** | **≤ 0.020** | 0.015 - 0.035 | **0.15 - 0.35** | **Tight Mn+Cr window** | | **Key Feature** | Base strength | Deoxidizer | **Primary hardenability driver** | **Ultra-low for toughness** | Machinability aid | **Secondary hardenability** | **Guaranteed Jominy band** | **Critical Features of the Composition:** * **Precision Hardenability Control:** The combined and tightly controlled ranges of **Manganese and Chromium** replace boron as the primary hardenability mechanism. This provides a more traditional and predictable hardening response, often preferred for critical components where boron-related sensitivity must be avoided. * **Enhanced Purity:** Features **ultra-low phosphorus (≤0.020%)**, exceeding standard grade requirements. This maximizes impact toughness, ductility, and fatigue resistance, particularly in the transverse direction. * **Optimized Machinability:** Controlled sulfur content within a narrow band ensures good chip formation and surface finish during machining without compromising transverse properties excessively. * **Consistency:** The narrow compositional windows guarantee minimal batch-to-batch variation in heat treatment results, a hallmark of Ovako's SB quality. --- ## **2. Physical & Mechanical Properties** ### **A. Supplied Condition (Soft Annealed for Machining):** * **Hardness:** **180 - 210 HB** * **Tensile Strength (Rm):** 650 - 750 MPa * **Yield Strength (Rp0.2):** 400 - 480 MPa * **Elongation (A):** ≥ 16% * **Machinability:** **Very Good** for its carbon content. The homogeneous, fine-grained annealed structure and controlled sulfur allow for high cutting speeds and good tool life. * **Surface Quality:** Excellent, with minimal decarburization and surface defects. ### **B. After Quenching & Tempering (Guaranteed Hardenability):** * **Hardenability:** Defined by a **guaranteed Jominy hardenability band** (e.g., J7=HRC 45-52, J15=HRC 35-42, as per specific heat lot certification). This ensures predictable depth of hardening. * **Mechanical Properties (Example - Q&T to ~900 MPa Rm):** * **Tensile Strength (Rm):** 900 - 1000 MPa * **Yield Strength (Rp0.2):** 700 - 800 MPa * **Hardness:** **28 - 33 HRC** * **Impact Toughness (KV):** Excellent due to low P and controlled microstructure. * **Uniformity:** Provides consistent properties from surface to core within the guaranteed hardenability depth. --- ## **3. Product Applications** Ovako C45 SB1671 is engineered for **high-stress, safety-critical components** that require reliable and verifiable heat treatment response, often in automotive, bearing, and general engineering sectors. * **Automotive Safety & Drivetrain:** **Gearbox shafts, differential components, steering pins, and high-strength connecting rods.** * **Bearing Components:** **Bearing rings, rollers, and races** that require through-hardening for uniform load-bearing capacity. * **Hydraulic & Fluid Power:** **High-pressure piston rods, pump shafts, and valve bodies.** * **General High-Performance Parts:** **Machine tool spindles, heavy-duty bolts (Property Class 10.9), and agricultural drive components.** * **Components for Further Processing:** Ideal substrate for **induction or flame hardening**, where the consistent, high-quality core is essential. --- ## **4. International & Equivalent Standards** SB1671 is a proprietary quality level that meets and exceeds base standards, with its closest equivalents being other hardenability-guaranteed grades. | Standard System | Equivalent / Comparable Grade | **Relationship / Note** | | :--- | :--- | :--- | | **Ovako** | **SB1671 (C45)** | The primary specification with guaranteed hardenability. | | **EN (DIN)** | **1.1203 (C45E)** **with Hardenability (HL/HR/HC band)** | The base EN grade. SB1671 would correspond to a C45E specified with a particular hardenability band (e.g., C45E+H). | | **ISO** | ISO 683-18: Type 1.1203 | Base standard equivalent. | | **AISI/SAE** | **1045H** | The U.S. equivalent for a hardenability-guaranteed 1045 grade. **The 'H' suffix is critical.** | | **JIS** | **S45C** (with specified hardenability) | Japanese equivalent; requires additional hardenability stipulation. | | **Customer-Specific** | Often meets **VDA 239-100** (German automotive standard) for case-hardening and through-hardening steels. | | **Crucial Distinction:** **SB1671 is not just "C45 steel."** It is **C45 with a guaranteed hardenability certificate.** For engineering applications requiring predictable performance, specifying "SB1671" or "C45E+H" (with a defined band) is necessary to procure material with these assured characteristics, unlike off-the-shelf C45. --- ## **5. Key Advantages & Considerations** **Advantages:** * **Predictable Heat Treatment:** Guaranteed hardenability band eliminates guesswork, reduces heat treatment trials, and ensures part-to-part consistency in final properties. * **Superior Toughness & Fatigue Life:** Ultra-low phosphorus content directly translates to enhanced impact strength and durability under cyclic loading. * **Excellent Machinability:** Superior surface finish and chip control in the annealed state reduce manufacturing costs and time. * **High Micro-Cleanliness:** Ovako's production ensures low oxide and sulfide inclusion counts, improving fatigue performance. * **No Boron-Related Sensitivity:** Avoids potential issues with temper embrittlement or weld HAZ cracking sometimes associated with boron steels. **Considerations:** * **Premium Price:** Commands a higher cost than standard non-guaranteed C45 due to enhanced controls and testing. * **Requires Heat Treatment:** To realize its value, components must undergo proper quenching and tempering. * **Hardenability Limit:** While guaranteed, its hardenability is lower than that of boron-treated (SB1672) or low-alloy steels (e.g., 4140). Suitable for defined section sizes. * **Proprietary Specification:** Sourcing is specific to Ovako and distributors carrying their SB-quality products. --- **Disclaimer:** This overview describes typical characteristics of Ovako C45 SB1671. For engineering design and specification, it is **imperative to consult the official Ovako technical datasheet for SB1671**, including the specific Jominy hardenability band provided with the material certificate. Successful application requires collaboration between the designer, heat treater, and steel producer to select the correct hardenability band for the component's section size and desired final properties. -:- For detailed product information, please contact sales. -: Ovako C45 SB1671 Steel Specification Dimensions Size： Diameter 20-1000 mm Length <5079 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 C45 SB1671 Steel Properties -:- For detailed product information, please contact sales. -:

Applications of Ovako C45 SB1671 Steel Flange -:- For detailed product information, please contact sales. -: Chemical Identifiers Ovako C45 SB1671 Steel Flange -:- For detailed product information, please contact sales. -:

Packing of Ovako C45 SB1671 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 1550 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