45# Carbon Steel Material

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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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Chemical Composition	Mechanical Properties (In Quenched & Tempered State)
C	0.42-0.50 %	Tensile strength(MPA)	≥600
Si	0.17-0.37 %	Yield strength (MPA)	≥355
Mn	0.50-0.80 %	Elongation (δ5/%)	≥16
Cr	≤0.25 %	Reduction in Area (ψ/%)	≥40
Ni	≤0.25 %	Impact (J)	≥ 39
P	≤0.035 %	Hardness	≤197HB
S	≤0.035 %
Cu	≤0.25 %

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: Can steel round bars be used in the manufacturing of gears?: Yes, steel round bars can be used in the manufacturing of gears. Steel round bars are commonly used in gear manufacturing due to their high strength, durability, and resistance to wear and tear. The round shape of the bar allows for easy machining and shaping into the desired gear design. Steel round bars also have excellent mechanical properties, such as high tensile strength and good fatigue resistance, which are essential for gears that experience heavy loads and repetitive motions. Additionally, steel round bars can be heat-treated to further enhance their hardness and toughness, making them suitable for demanding gear applications. Overall, steel round bars are a popular choice in gear manufacturing due to their versatility and reliability.

Q: Can steel round bars be used in the production of power tools?: Yes, steel round bars can be used in the production of power tools. Steel round bars are often used as raw materials for manufacturing various components and parts of power tools due to their high strength, durability, and resistance to impact and wear. These bars can be machined, shaped, and heat-treated to create the necessary components, such as shafts, handles, and gears, that are crucial for the proper functioning of power tools.

Q: Are steel round bars resistant to chemicals?: Steel round bars can exhibit varying degrees of resistance to chemicals, depending on the specific type of steel and the type of chemical involved. Stainless steel round bars, for example, are known for their excellent resistance to a wide range of chemicals, including acids, alkalis, and various organic compounds. This is due to the high levels of chromium present in stainless steel, which forms a protective oxide layer on the surface, preventing corrosion and chemical attack. However, not all steel round bars possess the same level of chemical resistance. Carbon steel round bars, for instance, are more susceptible to corrosion and chemical attack compared to stainless steel. Carbon steel can be affected by acids, alkalis, and other corrosive chemicals, especially in highly corrosive environments. In such cases, additional protective measures such as coatings or treatments may be necessary to enhance chemical resistance. In summary, while stainless steel round bars offer excellent resistance to chemicals, carbon steel round bars may require additional precautions to protect against chemical corrosion. It is important to consider the specific type of steel, the type of chemical, and the environmental conditions when assessing the chemical resistance of steel round bars.

Q: Can steel round bars be used for making suspension components?: Yes, steel round bars can be used for making suspension components. Steel round bars are often utilized in the manufacturing of suspension components due to their excellent strength, durability, and resistance to fatigue. They provide the necessary support and stability required for suspension systems to function effectively.

Q: What are the different types of steel round bar surface treatments used in the automotive industry?: In the automotive industry, there are several types of steel round bar surface treatments used to enhance the performance, durability, and aesthetics of the components. Some of the common surface treatments include: 1. Phosphating: Phosphating is a widely used surface treatment that involves applying a phosphate coating on the steel round bar. This treatment enhances corrosion resistance and provides a good base for further coatings or paints. 2. Galvanizing: Galvanizing involves applying a layer of zinc to the steel round bar's surface. This treatment provides excellent corrosion resistance and enhances the lifespan of the component. 3. Electroplating: Electroplating is a process where a thin layer of metal, such as chrome or nickel, is deposited onto the steel round bar's surface using an electric current. This treatment improves the appearance, provides corrosion resistance, and enhances wear resistance. 4. Powder coating: Powder coating is a popular surface treatment method where a dry powder is applied to the steel round bar's surface and then heated to form a protective coating. This treatment provides excellent durability, corrosion resistance, and can be customized with various colors and finishes. 5. Anodizing: Anodizing is typically used for aluminum components in the automotive industry. However, it can also be applied to steel round bars in certain cases. This treatment involves creating an oxide layer on the surface, providing improved corrosion resistance and enhancing the appearance. 6. Black oxide coating: Black oxide coating is a chemical treatment that creates a blackened surface on the steel round bar. This treatment provides corrosion resistance, improved aesthetics, and can also act as a lubricant in certain applications. It is important to note that the choice of surface treatment depends on the specific requirements of the automotive component, including environmental conditions, desired appearance, and functional properties. Manufacturers carefully select the appropriate treatment to ensure optimal performance and longevity of the steel round bar in the automotive industry.

Q: How are steel round bars inspected for quality?: Steel round bars are inspected for quality through various methods such as visual inspection, dimensional measurements, and non-destructive testing techniques. These inspections involve checking for surface defects, ensuring accurate dimensions, and detecting any internal flaws or inconsistencies. Additionally, quality control measures may include hardness testing, chemical analysis, and mechanical property evaluations to ensure the steel bars meet the required standards and specifications.

Q: What are the different cutting methods used for steel round bars?: There are several cutting methods commonly used for steel round bars, depending on the specific requirements and the tools available. Some of the most common cutting methods for steel round bars include: 1. Sawing: Sawing is a traditional cutting method that involves using a saw blade to cut through the steel round bar. This method is commonly used for smaller diameter round bars and is relatively simple and cost-effective. 2. Abrasive Cutting: Abrasive cutting involves using an abrasive wheel or disc to grind through the steel round bar. This method is particularly effective for cutting thicker and harder steel bars. It is commonly used in industrial applications where precision and speed are required. 3. Plasma Cutting: Plasma cutting is a thermal cutting method that uses a high-velocity jet of ionized gas to melt and remove the metal. This method is suitable for cutting steel round bars of various thicknesses and is known for its speed and precision. 4. Laser Cutting: Laser cutting is a precise and efficient cutting method that uses a high-powered laser beam to melt and vaporize the metal. This method is commonly used for cutting complex shapes and patterns in steel round bars. 5. Waterjet Cutting: Waterjet cutting involves using a high-pressure stream of water mixed with an abrasive material to cut through the steel round bar. This method is highly versatile and can cut through various thicknesses and types of steel. 6. Shearing: Shearing is a cutting method that involves using a specialized machine with blades to cut through the steel round bar. This method is commonly used for cutting smaller diameter round bars and is known for its speed and accuracy. It is important to carefully consider the specific requirements of the project and consult with experts to determine the most suitable cutting method for steel round bars.

Q: Can steel round bars be used for making steering components?: Indeed, it is possible to utilize steel round bars in the production of steering components. The utilization of steel as a material for steering system components is quite prevalent owing to its remarkable strength and resilience. By machining or forging steel round bars, one can fashion them into diverse shapes and sizes to fabricate steering components like steering shafts, tie rods, and drag links. These components necessitate the capability to endure the forces and pressures exerted upon them during steering, and steel's properties render it suitable for this purpose. Moreover, steel is effortlessly obtainable and cost-efficient, rendering it a favored option for the production of steering components in numerous sectors, including automotive and aerospace.

Q: Can steel round bars be used in the construction of buildings?: Indeed, the utilization of steel round bars is viable in the erection of edifices. In the realm of construction, steel round bars are widely employed as reinforcement within concrete frameworks, specifically in columns, beams, and slabs. Their inclusion imparts heightened robustness and stability to the structure, augmenting its resilience against various loads and forces. Notably, the circular configuration of these bars facilitates effortless bending and molding, thereby rendering them versatile and adaptable for diverse construction applications. What's more, steel round bars are renowned for their exceptional tensile strength, durability, and resistance to corrosion, rendering them an optimal choice for enduring and dependable building construction projects.

Q: What are the advantages of using vanadium-alloy steel round bars?: Vanadium-alloy steel round bars offer numerous benefits. Firstly, they possess significantly enhanced strength and toughness compared to regular steel, making them ideal for applications requiring durability and high strength, such as construction, manufacturing, and engineering projects. The inclusion of vanadium improves the steel's ability to withstand heavy loads, impacts, and extreme temperatures, enabling it to thrive in demanding environments. Secondly, vanadium-alloy steel round bars display exceptional resistance to corrosion. The vanadium creates a protective oxide layer on the steel's surface, preventing rusting and corrosion. Consequently, these bars have impressive longevity, even in harsh or corrosive surroundings. Moreover, vanadium-alloy steel exhibits excellent weldability and machinability. It can be effortlessly welded, facilitating efficient fabrication and construction processes. Additionally, its machinability allows for precise shaping and forming, making it adaptable to various design requirements. Furthermore, vanadium-alloy steel excels in wear resistance. This quality is particularly advantageous in applications where the bars face high levels of friction, abrasion, or wear, such as mining or manufacturing equipment. The addition of vanadium enhances the steel's hardness and wear resistance, thereby extending the lifespan of the bars and reducing maintenance costs. Lastly, vanadium-alloy steel demonstrates exceptional heat resistance. It can endure high temperatures without compromising its strength or structural integrity. Consequently, it is suitable for applications involving exposure to extreme heat, such as automotive engines, turbines, or power generation equipment. In conclusion, the utilization of vanadium-alloy steel round bars provides a range of advantages, including increased strength and toughness, corrosion resistance, ease of welding and machining, impressive wear resistance, and high heat resistance. These qualities establish vanadium-alloy steel round bars as a dependable and versatile choice for various applications.

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