Product parameter

Carbon steel hexagonal bar is a commonly used building material, the main component is carbon steel, usually presented as a hexagonal rod-like structure. Its materials are Q235, Q345, 20#, 45#, etc., of which Q235 and Q345 are the most commonly used materials. Carbon steel hexagonal bar has the characteristics of high strength, hardness and wear resistance, good processing performance, relatively low price, suitable for some low requirements in the machining field and building steel structure.

The production process of carbon steel hexagonal bar includes cold drawing and hot rolling. Cold drawing process is to press the billet into the required diameter of the hexagonal bar by cold drawing machine, this process has high precision, smooth surface and good wear resistance. Hot rolling process is to heat the billet to a high temperature state, and then press into the required hexagonal bar through a large rolling mill, this process has higher production efficiency, but the surface quality is slightly inferior to cold drawing.

Material introduction

Low-carbon Steel

Low-carbon steel, commonly known as mild steel, is by far the most common type of steel. Because of its low cost and material properties, low-carbon steel is suitable for a wide range of applications. Low-carbon steel contains approximately 0.05-0.25% carbon, making it malleable and ductile. Mild steel has a low tensile strength, but it is inexpensive and straightforward to form; carburizing can increase surface hardness.

High-strength, low-alloy steels (HSLA) are also categorized as low-carbon steels, with other ingredients including copper, nickel, vanadium, and molybdenum. Together, these can account for up to 10% of the steel composition. As the name implies, high-strength, low-alloy steels have higher strengths due to heat treatment. They also retain ductility, allowing them to be readily formed and machined. HSLA is more corrosion-resistant than regular low-carbon steel.

Medium-carbon Steel

Medium-carbon steel has 0.30 – 0.50% carbon and 0.60 – 1.65% manganese. This steel’s mechanical properties can be enhanced by a heat treatment involving austenitizing, followed by quenching and tempering, giving them a martensitic microstructure.

Heat treatment is only possible on extremely thin portions. However, steel can add additional alloying elements such as chromium, molybdenum, and nickel to increase its capacity to be heat treated and thus hardened.

Hardened medium-carbon steels have greater strength than low-carbon steels but at the sacrifice of ductility and toughness. This steel is mostly used in manufacturing machine components like shafts, axles, gears, crankshafts, couplings, and forgings. Still, it may also be used in rails and railway wheels.

High-carbon Steel

High-carbon steel has 0.60– 1.00% carbon and 0.30 – 0.90% manganese. It possesses the greatest hardness and toughness of carbon steel but the least ductility. Because they are nearly always hardened and tempered, high-carbon steels are extremely wear-resistant. High carbon steels might be employed in springs, rope wires, hammers, screwdrivers, and wrenches.

Tool steels and die steels are high-carbon steels containing extra alloying elements such as chromium, vanadium, molybdenum, and tungsten. The incorporation of these elements leads to particularly tough wear-resistant steel, which is a consequence of the production of carbide compounds like tungsten carbide (WC).

Properties And Applications of Common Carbon Steel Grades

Carbon steel comes in various forms, and can be used in many industries and sectors. Low-carbon steels are frequently used in vehicle body components, structural forms (I-beams, channel and angle iron), pipelines, building and bridge components, and food cans. Medium-carbon steels are frequently used for railway tracks, train wheels, crankshafts, and gears and machinery parts needing this combination of qualities because of their high strength, resistance to wear, and toughness. High-carbon steels are utilized in cutting tools, springs, great-strength wire, and dies due to their high wear resistance and hardness.

Low-carbon, medium-carbon, and high-carbon steel correspond to some common grades. The following table compares several carbon steel grades’ examples, qualities, and applications.

Product testing

We know that in the steel industry, quality is the lifeline. As a professional steel manufacturer, we always put product quality in the first place and are committed to providing customers with the best quality and most reliable steel products.
In order to ensure that our products meet international standards and customer requirements, we have established a sound quality management system, from raw material procurement to production and processing, and then to finished product inspection, every link is strictly monitored and controlled. We use advanced production equipment and processes to ensure the accuracy and stability of products.
We know that only excellent quality products can win the trust of customers and market recognition. Therefore, we will continue to uphold the concept of quality first, constantly improve product quality and service level, to provide customers with better quality steel products and services.

Warehouse and delivery show

Beijing Sisno Metals Trade Co.,Ltd has been committed to providing customers with a wide range of product choices. At present, we have a large stock of steel in our warehouses, covering a wide range of specifications and models to meet the diverse needs of different customers.

These stocks of steel are carefully selected by us for high quality products, which undergo strict quality control and inspection to ensure their excellent durability and reliability. We have a complete inventory management system, which can track and manage inventory in real time to ensure that the quality and quantity of products are always maintained in the best condition.

Our extensive inventory means we are able to respond quickly to our customers' needs, shorten lead times and provide a more flexible and convenient service. We are always customer-centric and committed to providing our customers with efficient and reliable solutions to help them achieve their engineering goals.

If you are interested in our stock status or have any questions, please feel free to contact us. We will be happy to provide you with more details and support to meet your needs.

Product application

Carbon steel has a wide range of applications, and the following are some detailed application areas:

Mechanical manufacturing: Carbon steel is widely used in the field of mechanical manufacturing, such as the manufacture of various mechanical parts and components, such as bearings, gears, connecting rods, springs, etc. Because carbon steel has high strength and hardness, as well as good wear resistance and toughness, it is suitable for the manufacture of mechanical parts that can withstand heavy loads and high-speed operation.
Building materials: The application of carbon steel in the field of building materials is also very important, such as for the manufacture of steel bars, steel plates, steel pipes and other building materials. Carbon steel's high strength and toughness make it an ideal building material that can be used to reinforce concrete structures and improve the strength and stability of buildings.
Automotive industry: Carbon steel is also widely used in the automotive industry, such as in the manufacture of car bodies, chassis, engines and other components. Carbon steel's high strength and good machinability make it an important material in automobile manufacturing, which can improve the safety and durability of automobiles.
Energy industry: Carbon steel is also widely used in the energy industry, such as in the manufacture of oil and gas drilling equipment, pipelines, storage tanks, etc. Because carbon steel has good corrosion resistance and high strength, it is suitable for manufacturing equipment that works in harsh environments.
The aerospace sector: Carbon steel is also very important in the aerospace sector, for example for the manufacture of structural components for aircraft and spacecraft. Due to its high strength, light weight and good machinability, carbon steel is suitable for the manufacture of components that need to withstand extreme loads and high-temperature environments.

In short, carbon steel as an important material, has a wide range of applications in various fields. With the continuous progress of science and technology and the continuous development of industry, the application field of carbon steel will continue to expand and deepen.

About us

Welcome to Sesino Metal. Beijing Sesino Metal Trade Co., Ltd is an international trading company equipped with extensive experience and excellent reputation in the steel industry for more than 5 years. We are committed to providing customers with high-quality, diversified steel products to the global market. Since founding, we have always adhered to our core values of integrity, professionalism and innovation. Our team consists of a group of experienced industry experts and enthusiastic sales representatives, who have won the trust and praise of our customers with their deep industry knowledge and excellent service attitude.
As one of the world's leading steel products suppliers, we have established solid cooperative relationships with big state-owned steel mills in China, including Tisco, Wisco, Nisco, Shougang, Baosteel, Hunan Valin, and Shandongsteel ect, and many private mills who have more competitive prices. Therefore, we can provide you with a wide range of steel products, including carbon steel, stainless steel, alloy steel, oriented and non-oriented electrical silicon steel , aluminum steel and other metal products etc.
In addition to providing high-quality steel products, we are also committed to providing comprehensive solutions to our customers. Our professional team will provide you with customized procurement solutions, logistics arrangements and after-sales services based on your needs to ensure that you receive worry-free support and protection during the entire transaction process.
We understand that our customers' needs and satisfaction are the keys to our success. Therefore, we will continue to work hard to improve service quality, continuously develop and improve product lines to meet the changing needs of customers. We look forward to establishing a long-term and stable cooperative relationship with you and creating a better future together. Thank you for choosing Sesino Metals, we look forward to working with you to create our brilliance!

Certificate display

We value product quality and customer service feedback, so all our products can accept professional quality inspection by third party testing agencies and can be accompanied by relevant quality certificates

FAQ

Are you having any problems? You can always ask us about your problems, or you can browse the topics below to find what you are looking for.

Are you trading company or manufacturer ?

We are specialized in the production and processing of various carbon steel products, we can also accept custom products of other materials

How long is your delivery time?

It takes around 3-5 days for the regular models, and 7 to 10 working days for the special sizes and processing. It is based on the order quantity and requirement.

Do you provide samples ? Is it free or extra ?

We can provide samples to you for free, but the cost of express delivery will be borne by you.

Do you support customization ?

Yes, we have a full stock of products with a full range of models and a working production line. If you don't have what you want, we can customize it.

Do you accept third party testing ?

Yes, we fully accept the quality inspection of the third party inspection institutions. We attach great importance to the reliability of product quality

What are the advantages of your company?

First of all, we have an absolute advantage in price. Secondly, the quality of products is also strictly controlled.