Ovako C45 5155 Steel Seamless tube

Ovako C45 5155 Steel Seamless tube, +AR Product Information -:- For detailed product information, please contact sales. -: Ovako C45 5155 Steel Seamless tube, +AR Synonyms -:- For detailed product information, please contact sales. -:

Ovako C45 5155 Steel, +AR Product Information -:- For detailed product information, please contact sales. -: # **Product Introduction: Ovako C45 5155 Steel, +AR** **Ovako C45 5155, +AR** is a high-quality **medium-carbon engineering steel** supplied in the **as-rolled (+AR) condition** according to Ovako's proprietary 5155 specification. This designation indicates a steel that has undergone controlled thermomechanical rolling and is delivered without subsequent annealing or heat treatment. This product is engineered for applications where the hot-rolled condition provides adequate properties for final use or serves as an optimal starting condition for subsequent customer processing such as machining, forging, or heat treatment. The "5155" specification implies specific quality controls that differentiate it from standard commercial-grade C45 material, though it does not carry the premium "Imatra 4 M" classification. --- ## **1. Chemical Composition (Ovako 5155 Specification)** The chemical composition adheres to the standard C45 range but with tighter controls than basic commercial grades. | Element | Carbon (C) | Silicon (Si) | Manganese (Mn) | Phosphorus (P) | Sulfur (S) | Chromium (Cr) | Other | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | **Range** | 0.42 - 0.50 | 0.15 - 0.40 | 0.60 - 0.90 | **≤ 0.025** | **≤ 0.025** | ≤ 0.25 | Typical residuals | | **Key Feature** | Base for strength & hardenability. | Standard deoxidizer. | Primary hardenability element. | **Low for improved toughness.** | **Controlled for machinability/isotropy.** | Residual/added for consistency. | - | **Critical Features of the Composition:** * **Controlled Purity:** Phosphorus and sulfur are controlled at low levels (**≤0.025%**), which is better than many commodity hot-rolled steels, promoting improved toughness and more uniform properties compared to standard C45. * **Standard C45 Base:** Maintains the standard carbon and manganese range suitable for a variety of hardening processes (Q&T, induction hardening). * **Consistency:** The 5155 specification ensures a consistent chemical composition batch-to-batch, providing predictable behavior in further processing. --- ## **2. Physical & Mechanical Properties (+AR Condition)** Properties in the As-Rolled condition are a direct result of the controlled rolling practice. The microstructure is typically a ferrite-pearlite mix. | Property | Typical Value - As-Rolled (+AR) | **Technical Significance** | | :--- | :--- | :--- | | **Yield Strength (Rp0.2)** | **≥ 300 MPa** | Adequate for many structural applications in the as-supplied state. | | **Tensile Strength (Rm)** | **550 - 700 MPa** | Provides a good balance of strength and formability. | | **Elongation (A₅)** | **≥ 16%** | Maintains reasonable ductility for forming operations. | | **Hardness** | **160 - 210 HB** | Suitable for machining, though harder and less uniform than annealed stock. | | **Impact Toughness** | Moderate. Superior to high-sulfur steels but not at the level of ultra-low P/S grades like 5081 4M. | Sufficient for many non-critical dynamic applications. | | **Machinability** | **Fair.** The presence of mill scale and the as-rolled microstructure require robust tooling. Machinability is better than that of high-sulfur free-cutting steels in terms of tool life predictability but lower in terms of cutting speed. | | | **Surface Condition** | Standard hot-rolled mill scale. | Must be removed (via blasting, pickling, or machining) prior to painting, plating, or precision machining. | **Note on Further Processing:** This steel is a cost-effective raw material for components that will be: 1. **Machined and Heat Treated:** Suitable for quenching & tempering or induction hardening by the customer. 2. **Forged:** Used as a forging stock for further shape development. --- ## **3. Product Applications** Ovako C45 5155 +AR is suited for **general engineering components** where a reliable, consistent quality hot-rolled steel is required, and where the cost-saving of the +AR condition is beneficial. * **General Structural Parts:** **Base plates, brackets, and frames** for machinery and equipment. * **Shafts and Pins:** **Low to medium-stress shafts, axles, and pins** that may be machined and/or heat-treated by the customer. * **Forging Stock:** Used as **blanks for drop forgings or open-die forgings** to create more complex shapes. * **Wear Parts:** **Liners, wear plates, and bars** that may be used as-rolled or after further surface hardening. * **Components for Secondary Processing:** An economical choice for parts that will undergo significant customer-specific machining and heat treatment. --- ## **4. International & Equivalent Standards** This is a mill-specific product based on a common grade. | Standard System | Equivalent / Comparable Grade | **Relationship / Note** | | :--- | :--- | :--- | | **Ovako Specification** | **C45 5155, +AR** | The exact product specification. | | **EN 10025-2** | **1.0503 (S275JR / S355JR for structural props)** | In terms of minimum yield strength, it is comparable to structural steels, but C45 has higher carbon for hardenability. | | **EN 10250-2** | **1.0503 (C45E)** - As-rolled | The base grade equivalent. The 5155 spec represents Ovako's controlled version of this. | | **ASTM A36 / A576** | **Grade 1045 (Hot-rolled)** | The closest ASTM general specification for hot-rolled carbon steel bars. Ovako 5155 implies tighter quality control. | | **JIS G3101** | **SS400 / SS490** | General structural steel equivalent in strength, but C45 has different composition and hardening potential. | | **GB/T 699** | **45# Steel (Hot-rolled)** | The Chinese equivalent grade in the hot-rolled condition. | **Key Distinction:** **C45 5155 +AR is a quality-controlled commercial grade.** It is a step above unspecified "hot-rolled C45" from a commodity supplier but does not possess the ultra-high cleanliness and guaranteed toughness of Ovako's premium "4 M" grades (e.g., 5081). It offers a balance of **consistent quality and cost-effectiveness**. --- ## **5. Key Advantages & Considerations** **Advantages:** * **Cost-Effective:** The +AR condition provides the most economical form for large sections or heavy products, avoiding mill heat treatment costs. * **Good Consistency:** The 5155 specification ensures more reliable chemical and property ranges than non-specified commodity steel. * **Versatile Base Material:** Excellent as a starting stock for a wide range of customer processes (machining, forging, heat treatment). * **Widely Processable:** Can be welded, cut, and formed using standard methods appropriate for medium-carbon steel. **Considerations:** * **Mill Scale:** Requires an additional descaling operation before many finishing processes. * **Property Variability:** Mechanical properties can vary through the cross-section and are less uniform than in normalized or annealed material. * **Not Optimized for Machining:** Harder and less uniform than annealed steel, which may increase tool wear and machining time. * **Limited "As-Supplied" Toughness:** While P/S are controlled, the toughness is not guaranteed to the levels of premium clean-steel grades. Not ideal for highly stressed, fatigue-critical applications in the as-rolled state. --- **Disclaimer:** Properties in the +AR condition are indicative and depend on section size and rolling parameters. For critical applications, **request and review the mill test certificate for the specific batch**. It is recommended to consult with Ovako or your supplier to confirm that the C45 5155 +AR grade is suitable for your specific manufacturing process and final performance requirements. -:- For detailed product information, please contact sales. -: Ovako C45 5155 Steel, +AR Specification Dimensions Size： Diameter 20-1000 mm Length <5082 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 5155 Steel, +AR Properties -:- For detailed product information, please contact sales. -:

Applications of Ovako C45 5155 Steel Seamless tube, +AR -:- For detailed product information, please contact sales. -: Chemical Identifiers Ovako C45 5155 Steel Seamless tube, +AR -:- For detailed product information, please contact sales. -:

Packing of Ovako C45 5155 Steel Seamless tube, +AR -:- 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 1553 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