Sea 9260 Spring Steel Bar

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Loading Port:: Shanghai

Payment Terms:: TT OR LC

Min Order Qty:: 30 m.t.

Supply Capability:: 120000 m.t./month

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C	Si	Mn	S	P	Cr	Ni	Cu
0.52-0.60	1.50-2.00	0.60-0.90	≤0.035	≤0.035	≤0.35	≤0.35	≤0.20

Product Name	Typical Grades	Diameter(mm)	Standard adopted
Carbon Steel	20 (1020/S20C/C22)	Ø16-Ø300	GB/SAE/JIS/DIN
40 (1040/S40C/C40)
45 (1045/S45C/C45)
Bearing Steel	GCr9 (51100/SUJ1)	Ø12-Ø250
GCr15 (52100/SUJ2/100Gr6)
GCr9SiMn (A485-Gr.1/SUJ3)
Cr-Mo Steel	20Cr (5120/SCr420H/20Cr4)	Ø12-Ø250
40Cr (5140/SCr440/41Cr4)
42CrMo(4140/SCM440/42CrMo4)
Gear Steel	20CrNiMo	Ø16-Ø600
20CrMn(5115/SMnC420/20MnCr5)
20CrNiMo(8620/SNCM220/20CrMiMo2)

Company Information

CNBM International Corporation is the most important trading platform of CNBM group.

Whith its advantages, CNBM International are mainly concentrate on Cement, Glass, Iron and Steel, Ceramics industries and devotes herself for supplying high qulity series of refractories as well as technical consultancies and logistics solutions.

FAQ

1, Your advantages?

professional products inquiry, products knowledge train (for agents), smooth goods delivery, excellent customer solution proposale

2, Test & Certificate?

SGS test is available, customer inspection before shipping is welcome, third party inspection is no problem

3, Factory or Trading Company?

CNBM is a trading company but we have so many protocol factories and CNBM works as a trading department of these factories. Also CNBM is the holding company of many factories.

4, Payment Terms?

30% TT as deposit and 70% before delivery.

Irrevocable L/C at sight.

5, Trading Terms?

EXW, FOB, CIF, FFR, CNF

6, After-sale Service?

CNBM provides the services and support you need for every step of our cooperation. We're the business partner you can trust.

For any problem, please kindly contact us at any your convenient time.

We'll reply you in our first priority within 24 hours.

Packaging & Delivery

1, Packaging: seaworthy package or as required

2, Delivery: 35-45 days or based on quantity

Q:What are the different types of steel round bar alloys used in the construction industry?: There are several different types of steel round bar alloys commonly used in the construction industry. Some of the most popular alloys include: 1. Carbon Steel: This is the most common type of steel alloy used in construction. It is known for its high strength and durability, making it suitable for a wide range of applications. 2. Stainless Steel: This alloy is highly resistant to corrosion and staining, making it ideal for construction projects where exposure to moisture or chemicals is a concern. It is often used in applications such as handrails, kitchen equipment, and structural components. 3. Alloy Steel: This type of steel contains additional alloying elements such as manganese, chromium, or nickel, which enhance its mechanical properties. Alloy steel round bars are known for their high tensile strength, toughness, and wear resistance, making them suitable for applications that require heavy-duty performance. 4. Tool Steel: As the name suggests, this alloy is specifically designed for making tools and machinery components. Tool steel round bars are known for their hardness, resistance to abrasion, and ability to retain their shape at high temperatures. They are commonly used in the construction industry for making cutting tools, dies, and molds. 5. Duplex Steel: This alloy combines the properties of both austenitic and ferritic stainless steels. Duplex steel round bars offer excellent corrosion resistance, high strength, and good weldability. They are often used in construction projects where a combination of strength and corrosion resistance is required, such as in marine or coastal environments. Overall, the choice of steel round bar alloy in the construction industry depends on the specific application and requirements of the project. Each alloy offers unique properties and advantages, allowing construction professionals to select the most suitable option for their needs.

Q:Are steel round bars suitable for marine environments?: Steel round bars can be suitable for marine environments, but their suitability depends on the specific type of steel and the conditions of the marine environment. Stainless steel is often the preferred choice for marine applications because it possesses excellent corrosion resistance properties. This is due to the presence of chromium in stainless steel, which forms a protective layer on the steel's surface, preventing corrosion and rusting. However, not all steel round bars are suitable for marine environments. Carbon steel, for instance, is more vulnerable to corrosion in marine settings, especially when exposed to saltwater. To prevent corrosion, carbon steel needs to be carefully protected with coatings or treatments. In addition to the type of steel, the conditions of the marine environment also play a significant role in determining the suitability of steel round bars. Factors such as water salinity, exposure to chemicals, temperature fluctuations, and physical stress can impact steel's corrosion resistance. In highly corrosive marine environments, it is advisable to use specialized marine-grade stainless steel or other corrosion-resistant alloys. Ultimately, it is crucial to choose the appropriate steel grade and consider extra protective measures like coatings or galvanization to enhance the durability and longevity of steel round bars in marine environments.

Q:What are the different types of steel round bar coatings used in the automotive industry?: In the automotive industry, various coatings are commonly applied to steel round bars to enhance their durability, corrosion resistance, and overall performance. Here are some examples: 1. Galvanized Coating: Widely utilized in automotive applications, this coating involves the application of a zinc layer to the steel bar's surface. Galvanized coating provides excellent protection against corrosion, safeguarding the steel from rust and other forms of degradation. 2. Epoxy Coating: This coating is preferred when high chemical resistance is required in automotive applications. It forms a protective barrier against chemicals, moisture, and other corrosive substances. Additionally, epoxy coatings exhibit exceptional adhesion properties, ensuring long-lasting performance. 3. Powder Coating: Known for durability and aesthetic appeal, powder coating is a popular choice for steel round bars in the automotive industry. It involves the application of dry powder to the steel bar's surface, which is then heated, creating a tough and protective layer. Powder coatings offer a wide range of colors and finishes, allowing for customization and branding opportunities. 4. Ceramic Coating: Ideal for automotive applications involving high temperatures, ceramic coatings provide exceptional heat resistance. They form a protective barrier that prevents heat damage and extends the lifespan of steel round bars. 5. Phosphate Coating: Often used as a pre-treatment before applying other coatings, phosphate coatings enhance adhesion and provide additional corrosion resistance. They also improve the lubricity of the steel bar, reducing friction and wear. These examples demonstrate the variety of steel round bar coatings used in the automotive industry. Each coating offers unique benefits and is selected based on specific application requirements. Ultimately, these coatings play a vital role in improving the performance and longevity of steel round bars in automotive applications.

Q:How are steel round bars classified based on their shape?: Steel round bars can be categorized into two main groups, namely hot-rolled round bars and cold-drawn round bars, depending on their shape. Hot-rolled round bars are produced by heating a steel billet until it becomes malleable and then passing it through a series of rollers to achieve the desired shape. This manufacturing process results in a rougher surface texture and a slightly larger diameter when compared to cold-drawn round bars. Hot-rolled round bars find common usage in construction, engineering, and manufacturing applications where strength and durability play a crucial role. On the other hand, cold-drawn round bars are manufactured by pulling a hot-rolled round bar through a series of dies at room temperature. This process enhances the dimensional accuracy, surface finish, and mechanical properties of the steel. Cold-drawn round bars possess a smoother surface texture and a more precise diameter, making them suitable for applications that demand tight tolerances, such as precision machining, automotive components, and machinery shafts. In conclusion, the classification of steel round bars, based on their shape, is determined by the specific manufacturing process employed. Hot-rolled round bars exhibit rougher surfaces and slightly larger diameters, while cold-drawn round bars boast smoother surfaces and more precise dimensions. The choice between these two categories depends on the specific requirements of the given application.

Q:Are steel round bars suitable for aerospace applications?: Yes, steel round bars are suitable for aerospace applications as they offer high strength, durability, and excellent resistance to corrosion, making them ideal for various aerospace components such as landing gear, engine parts, and structural elements.

Q:What is the difference between hot working and cold working of steel round bars?: Hot working and cold working are two different methods used to shape and manipulate steel round bars. Hot working involves heating the steel to a high temperature, typically above its recrystallization temperature, and then shaping it through processes such as forging, rolling, or extrusion. This method helps to reduce the hardness and increase the ductility of the steel, making it easier to reshape and form into desired shapes. Hot working also helps to refine the grain structure of the steel, improving its mechanical properties. On the other hand, cold working is performed at or near room temperature without the need for heating the steel. It involves processes like cold rolling, drawing, or bending, where the steel is mechanically deformed to achieve the desired shape. Cold working increases the strength and hardness of the steel while reducing its ductility. It also causes strain hardening, which results in a finer grain structure and improved dimensional accuracy. In summary, the main difference between hot working and cold working of steel round bars lies in the temperature at which the processes are carried out and the resulting effects on the mechanical properties of the steel. Hot working is performed at high temperatures to increase ductility and refine grain structure, while cold working is done at or near room temperature to enhance strength, hardness, and dimensional accuracy.

Q:Can steel round bars be used in the manufacturing of office furniture?: Yes, steel round bars can be used in the manufacturing of office furniture. Steel is a versatile and durable material that can be shaped into various forms, including round bars. These round bars can be used as structural components in office furniture, such as table legs, chair frames, or support beams. Steel round bars provide strength and stability to the furniture, making it suitable for heavy use in office environments. Additionally, steel can be finished in different ways, such as powder coating or chrome plating, to enhance its appearance and match the aesthetic of the office space. Overall, using steel round bars in the manufacturing of office furniture offers durability, stability, and a modern look.

Q:How do steel round bars compare to aluminum round bars?: Steel round bars and aluminum round bars have several key differences in terms of their properties and applications. Strength and durability: Steel round bars are generally stronger and more durable than aluminum round bars. Steel has a higher tensile strength and can withstand higher loads and stresses compared to aluminum. This makes steel round bars suitable for heavy-duty applications where strength and durability are critical, such as construction projects or manufacturing machinery. Aluminum round bars, on the other hand, are less strong and more prone to bending or breaking under heavy loads, so they are typically used in lighter applications or where weight savings are important. Weight: Aluminum round bars are significantly lighter than steel round bars. This makes aluminum a popular choice in industries where weight is a crucial factor, such as aerospace or automotive manufacturing. The lightweight nature of aluminum round bars also makes them easier to handle and transport. Corrosion resistance: Aluminum round bars have excellent corrosion resistance due to the formation of a protective oxide layer on their surface. This oxide layer acts as a barrier, preventing further corrosion and making aluminum ideal for outdoor applications or in environments with high humidity or exposure to chemicals. Steel round bars, on the other hand, are more prone to rust and corrosion, so they require protective coatings or treatments to enhance their resistance to corrosion. Cost: Steel round bars are generally more cost-effective compared to aluminum round bars. Steel is a widely available and commonly used material, making it more affordable in most cases. Aluminum, on the other hand, is more expensive due to its production process and the higher energy requirements involved. Thermal conductivity: Aluminum round bars have excellent thermal conductivity, meaning they can efficiently transfer heat. This makes them suitable for applications where heat dissipation is crucial, such as heat sinks or electrical conductors. Steel round bars, while conducting heat to some extent, have lower thermal conductivity compared to aluminum. In summary, steel round bars are stronger, more durable, and cost-effective, making them suitable for heavy-duty applications. Aluminum round bars, on the other hand, are lighter, have excellent corrosion resistance, and superior thermal conductivity, making them ideal for lightweight applications and industries where weight savings or heat dissipation are critical. Ultimately, the choice between steel and aluminum round bars depends on the specific requirements of the application.

Q:Can steel round bars be used in the production of electrical equipment?: Steel round bars are capable of being utilized in the production of electrical equipment. Steel possesses a multitude of properties that render it suitable for various applications, including electrical equipment. Components such as shafts, connectors, and structural supports within electrical equipment can be manufactured using steel round bars. The reliability of steel is derived from its strength and durability, enabling it to withstand the mechanical stresses and environmental conditions that electrical equipment may encounter. Moreover, steel offers favorable electrical conductivity and magnetic properties, crucial characteristics for specific electrical components. Nevertheless, it is important to acknowledge that steel round bars may necessitate additional processes like machining, heat treatment, or surface finishing in order to meet specific requirements for the production of electrical equipment.

Q:Are steel round bars used in the construction industry?: Yes, steel round bars are commonly used in the construction industry. They are often used as structural elements, such as reinforcement in concrete structures, as well as in the fabrication of various components and fittings.

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