40Cr bright bar is an alloy structural steel material with excellent performance. In appearance, it presents a uniform and bright luster, and the surface is smooth and flat without any defects. In terms of performance, 40Cr has high strength and good toughness, and can withstand large loads and impacts. After proper heat treatment, it can obtain high hardness and wear resistance, and is suitable for manufacturing various mechanical parts. With good processing performance, it can be processed by cutting, forging, welding and other processing methods. It has good machinability and high processing accuracy, and can meet the processing requirements of parts of different shapes and sizes. In addition, 40Cr bright bar also has good hardenability, and can obtain a deeper hardened layer during the quenching process, which improves the surface hardness and wear resistance of the parts.

Chemical element content (%)

Specification：1.00~300.00mm

Application: Mainly used for manufacturing gears, shafts, worms, spline shafts, engine parts, landing gear parts, etc.; widely used in other fields such as machinery manufacturing, automobile manufacturing, aerospace, mold manufacturing, petrochemicals, mining machinery, etc.

Compared with other brands of 40Cr bright bars, what are the advantages of Sividen's 40Cr bright bars?

1. High quality stability: Advanced and strict production process and quality control system, strict control from raw material screening to production in all links, very precise control of chemical composition, can accurately control the content of various elements such as carbon, silicon, manganese, etc., to meet the standard requirements, to ensure the mechanical properties and quality stability of 40Cr bright bar. The performance and quality fluctuations of Sividen bright bar are very small, which can meet customers' high requirements for product consistency and provide reliable guarantee for subsequent processing and use.

2. Excellent surface quality: The use of advanced production equipment and processing technology makes the surface smoothness, flatness and finish of 40Cr bright bar very high. Smooth surface can not only reduce friction in subsequent processing and improve processing efficiency, but also reduce stress concentration caused by surface defects and extend the service life of the product. The surface treatment process is optimized during the production process, so that the surface of the bright bar has better corrosion resistance. In some environments with high requirements for corrosion resistance, 40Cr bright bar can maintain good performance and is not easy to rust and corrode.

3. High dimensional accuracy: Advanced production equipment and precision testing instruments can accurately control the size of 40Cr bright bar, making its dimensional tolerance range smaller, which can meet customers' requirements for high-precision dimensions. Not only is the dimensional accuracy of a single product high, but the dimensional difference between bright bars in the same batch is also very small, with good dimensional uniformity. For some products that require batch processing, this can ensure the dimensional consistency of each part, improve production efficiency and product quality.

4. Rich product variety: According to market demand and customer's special requirements, customized 40Cr bright bar products are provided to meet the use requirements under various complex working conditions, providing customers with more choices.

5. Perfect after-sales service: The perfect after-sales service system can respond to customer needs and feedback in a timely manner. For problems encountered by customers during use, technical support and solutions are provided to customers quickly.

We mainly engage in cold heading wire, bar, peeled bar, and profiled bar; our products cover 11 series and more than 300 grades, and we continue to develop a variety of professional steels. We can provide all-round solutions such as cold heading finishing line manufacturing and high-precision bright bar customization, and provide one-stop procurement services and package procurement solutions for global customers. The website displays some grades. If you don’t have the grade you need, please contact us by phone or email.