Ovako C45 SB8673 Steel Seamless tube

Ovako C45 SB8673 Steel Seamless tube Product Information -:- For detailed product information, please contact sales. -: Ovako C45 SB8673 Steel Seamless tube Synonyms -:- For detailed product information, please contact sales. -:

Ovako C45 SB8673 Steel Product Information -:- For detailed product information, please contact sales. -: # **Product Introduction: Ovako C45 SB8673 Steel Bar** **Ovako C45 SB8673** is a premium-quality **engineering steel bar** produced by Ovako, a leading European manufacturer of special bar quality (SBQ) steel. This product designation refers to a **medium-carbon, non-alloyed steel** conforming to the C45 grade under the SB8673 specification, which is Ovako's internal standard for steel bars used in demanding engineering applications. SB8673 steel is characterized by its high and consistent quality, excellent machinability, and suitability for various hardening processes, including induction hardening, flame hardening, and through-hardening (quenching and tempering). Ovako's production process emphasizes superior internal cleanliness, narrow hardenability bands, and excellent surface quality, making it a preferred choice for high-performance components in the automotive, general engineering, and bearing industries. --- ## **1. Chemical Composition (Per Ovako SB8673 / EN 10083-2 Standard)** The composition follows the European standard C45E grade with Ovako's enhanced controls for consistent hardenability and machinability. | Element | Carbon (C) | Silicon (Si) | Manganese (Mn) | Phosphorus (P) | Sulfur (S) | Chromium (Cr)* | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | **Content** | 0.42 - 0.50 | 0.15 - 0.40 | 0.50 - 0.80 | ≤ 0.025 | 0.015 - 0.035 | ≤ 0.40 | | **Key Feature** | Balanced for strength & hardenability. | Standard range. | Controlled for consistent response to hardening. | **Very Low** - improves toughness. | Controlled for machinability. | Residual element, tightly controlled. | **Critical Features of the Composition:** * **Medium Carbon Content:** Provides a solid base for achieving high strength through quenching and tempering or creating a hard surface via induction hardening. * **Enhanced Purity:** **Very low phosphorus (≤0.025%)** is a hallmark of Ovako quality. This minimizes grain boundary embrittlement and significantly improves impact toughness and fatigue strength. * **Controlled Sulfur:** Maintained within a narrow, optimal range to ensure both **good machinability** and minimal anisotropy (directional weakness). * **Consistent Hardenability:** Tight control of alloying elements (Mn, Cr residuals) ensures a narrow hardenability scatter band, guaranteeing predictable and uniform hardness profiles after heat treatment, batch after batch. --- ## **2. Physical & Mechanical Properties** Properties depend on the supplied condition (typically soft-annealed for machining) and any subsequent heat treatment. **A. Supplied Condition (Soft Annealed):** * **Hardness:** **≤ 225 HB** (Typically 180-210 HB). This soft state ensures excellent machinability. * **Tensile Strength (Rm):** 650 - 800 MPa (approx.) * **Yield Strength (Rp0.2):** 400 - 500 MPa (approx.) * **Elongation (A):** ≥ 14% * **Machinability:** **Good to very good** for a medium-carbon steel, facilitated by controlled sulfur and a homogeneous, fine-grained microstructure. **B. After Quenching & Tempering (Example):** * **Tensile Strength (Rm):** 900 - 1100 MPa (adjustable via tempering temperature) * **Yield Strength (Rp0.2):** 700 - 900 MPa * **Hardness:** **HRC 28 - 40** (typical for many structural components) * **Impact Toughness (KV):** Good, benefiting from low phosphorus content. **C. After Induction Hardening:** * **Surface Hardness:** **55 - 62 HRC** * **Case Depth:** Adjustable (typically 1-5 mm) * **Core Properties:** Remain tough and ductile, providing excellent fatigue resistance under dynamic loads. --- ## **3. Product Applications** Ovako C45 SB8673 is engineered for critical, dynamically loaded components, particularly where predictable hardening behavior is essential. * **Automotive Components:** **Gears, shafts, steering components (pinions, racks), camshafts, and crankshafts.** * **Bearing & Transmission Parts:** **Bearing rings, transmission shafts, and synchronizer hubs.** * **General Engineering:** **Hydraulic piston rods, high-strength bolts, coupling parts, and machine tool components.** * **Agricultural & Off-Highway Machinery:** **Drive shafts, axle components, and pivot pins.** * **Induction Hardened Parts:** Any component requiring a wear-resistant surface with a tough core, such as guide rods, rollers, and sprockets. --- ## **4. International & Equivalent Standards** SB8673 is Ovako's proprietary specification that typically aligns with and exceeds common international standards. | Standard System | Equivalent Grade / Standard | **Relationship / Note** | | :--- | :--- | :--- | | **Ovako** | **SB8673 (Grade C45)** | The primary, performance-guaranteed specification. | | **EN (DIN)** | **1.0503 (C45E)** | The direct European standard equivalent for chemical composition and basic properties. | | **ISO** | ISO 683-18: **Type 1.0503** | International standard equivalent. | | **AISI/SAE** | **1045** | The closest U.S. equivalent in terms of carbon content. **Key Difference:** SB8673 has tighter controls (especially lower P, controlled S) and guaranteed hardenability. | | **JIS** | **S45C** | Similar Japanese medium-carbon steel. | | **GB (China)** | **45# Steel** | Common Chinese equivalent. | **Crucial Note:** While chemically similar to C45E or 1045, **Ovako SB8673 represents a value-added engineering steel.** It is produced with specific guarantees for internal cleanliness, hardenability consistency, and machinability that generic "C45" may not provide. For critical applications, the SB8673 designation should be specified. --- ## **5. Key Advantages & Considerations** **Advantages:** * **Superior & Consistent Quality:** Guaranteed narrow hardenability bands and low inclusion levels ensure predictable performance in heat treatment and enhanced fatigue life. * **Excellent Machinability:** The soft-annealed condition and controlled chemistry allow for high productivity and good surface finish in machining operations. * **High Purity (Low Phosphorus):** Directly translates to better impact toughness and ductility, especially in the transverse direction. * **Versatile Heat Treatment Response:** Excellent suitability for induction hardening, flame hardening, and through-hardening. * **Proven Reliability:** Backed by Ovako's extensive metallurgical expertise and quality systems for demanding applications. **Considerations:** * **Premium Product:** Typically carries a cost premium over commodity-grade C45/1045 steel. * **Requires Heat Treatment for High Strength:** To achieve its full potential for wear resistance and strength, a final hardening process is necessary. * **Not Stainless:** Requires appropriate surface protection (coatings, plating) against corrosion. * **Proprietary Specification:** Sourcing is tied to Ovako or authorized distributors stocking this specific grade. --- **Disclaimer:** This overview provides general information on Ovako C45 SB8673. For engineering design and specification, it is imperative to consult the **official Ovako technical datasheet for SB8673** and engage with their technical support. Final component properties are critically dependent on the specific heat treatment parameters and manufacturing processes employed. -:- For detailed product information, please contact sales. -: Ovako C45 SB8673 Steel Specification Dimensions Size： Diameter 20-1000 mm Length <5077 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 SB8673 Steel Properties -:- For detailed product information, please contact sales. -:

Applications of Ovako C45 SB8673 Steel Seamless tube -:- For detailed product information, please contact sales. -: Chemical Identifiers Ovako C45 SB8673 Steel Seamless tube -:- For detailed product information, please contact sales. -:

Packing of Ovako C45 SB8673 Steel Seamless tube -:- 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 Seamless tube 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 1548 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