Hot Rolled Steel Round Bar 40Cr System 1

Hot Rolled Steel Round Bar 40Cr

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Loading Port:: China Main Port

Payment Terms:: TT or LC

Min Order Qty:: 100 m.t.

Supply Capability:: 2000 m.t./month

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Product Applications:

Hot Rolled Steel Round Bar are ideal for a large number of architectural and engineering structures. Or it can be used in construction of plants for the production of steel house frames, high-voltage transmission towers, bridges, vehicles, boilers, containers, ships, etc

Product Advantages:

OKorder's Hot Rolled Steel Round Bars are durable, strong, and with competitive price

Main Product Features:

· Premium quality

· Prompt delivery & seaworthy packing (30 days after receiving deposit)

· Corrosion resistance

· Can be recycled and reused

· Mill test certification

· Professional Service

· Competitive pricing

Product Specifications:

Manufacture: Hot rolled

Grade: Q195 – 235

Certificates: ISO, SGS, BV, CIQ

Length: 6m – 12m, as per customer request

Packaging: Export packing, nude packing, bundled

Diameter	Mass	Diameter	Mass	Diameter	Mass
(mm)	(kg/m)	(mm)	(kg/m)	(mm)	(kg/m)
6	0.22	22	2.98	53	17.30
7	0.30	24	3.55	56	19.30
8	0.40	25	3.85	60	22.20
9	0.50	26	4.17	63	24.50
10	0.62	28	4.83	65	26.00
11	0.75	30	5.55	70	30.20
12	0.89	32	6.31	75	34.70
13	1.04	34	7.13	80	39.50
14	1.21	36	7.99	85	44.50
15	1.39	38	8.90	90	49.90
16	1.58	40	9.86	95	55.60
17	1.78	42	10.90	100	61.70
18	2.00	45	12.50	120	88.85
19	2.23	48	14.20	140	120.93
20	2.47	50	15.40	150	138.82

FAQ:

Q1: Why buy Materials & Equipment from OKorder.com?

A1: All products offered byOKorder.com are carefully selected from China's most reliable manufacturing enterprises. Through its ISO certifications, OKorder.com adheres to the highest standards and a commitment to supply chain safety and customer satisfaction.

Q2: How do we guarantee the quality of our products?

A2: We have established an advanced quality management system which conducts strict quality tests at every step, from raw materials to the final product. At the same time, we provide extensive follow-up service assurances as required.

Q3: How soon can we receive the product after purchase?

A3: Within three days of placing an order, we will begin production. The specific shipping date is dependent upon international and government factors, but is typically 7 to 10 workdays.

Q4:What is the package

A4: Standard seaworthy packing or as customer required; all goods are packed in bundle with steel strips and shipped by break bulk vessel or container

Images:

Hot Rolled Steel Round Bar 40Cr

Q: What is the difference between common wire and high-speed wire?: Round bar is divided into three parts: hot rolling, forging and cold drawing. Standard Specification for hot rolled round steel is 5.5-250 mm. Of which: 5.5-25 mm small round bars are mostly supplied by straight strips. They are used as reinforcing bars, bolts and various mechanical parts. Round bars larger than 25 millimeters are used mainly for making mechanical parts or for seamless steel tubes.

Q: What is the maximum carbon content allowed for steel round bars?: The maximum carbon content allowed for steel round bars can vary depending on the specific grade or specification of steel being used. However, in general, most standard steel round bars have a maximum carbon content of around 0.25% to 0.30%. This level of carbon content helps to maintain a balance between strength and ductility, ensuring that the steel is both strong enough to withstand load-bearing applications and flexible enough to be easily formed or machined. It is important to note that some specialized steels or specific applications may have different maximum carbon content requirements, so it is always essential to refer to the relevant specifications or standards for accurate and specific information.

Q: Can steel round bars be used in the automotive parts industry?: Indeed, the automotive parts industry does make use of steel round bars. These bars, renowned for their remarkable strength, resilience, and ability to withstand wear and tear, are frequently employed in the production of diverse automotive components. By shaping and sizing these bars to suit the specific needs of axles, drive shafts, suspension components, steering components, and gears, manufacturers ensure that automotive parts are crafted to the highest standards. The utilization of steel round bars guarantees the structural soundness and dependability of these components, rendering them perfectly equipped to endure the rigorous conditions and burdens encountered in the automotive sector.

Q: How do steel round bars compare to plastic or composite bars?: Plastic or composite bars cannot match the advantages of steel round bars. Firstly, steel round bars surpass plastic or composite bars in terms of strength and sturdiness. They excel in enduring heavy loads and providing outstanding structural support. Therefore, they are ideal for construction or engineering projects demanding robustness and durability. Secondly, steel round bars exhibit remarkable resistance to impact and wear. They can withstand severe environmental conditions and are less prone to cracking, chipping, or breaking compared to plastic or composite bars. Consequently, steel round bars suit heavy-duty applications where abrasion resistance is crucial. Moreover, steel round bars boast superior heat resistance in comparison to plastic or composite bars. They can endure high temperatures without distorting or compromising their structural integrity. Hence, steel round bars are suitable for applications involving extreme heat, such as machinery or equipment manufacturing. Furthermore, steel round bars are highly versatile and can be easily machined or modified to meet specific requirements. They allow for effortless customization and adaptability through cutting, drilling, bending, or welding. Conversely, plastic or composite bars may have limitations regarding customization or modification. Nonetheless, it is important to consider that steel round bars also have drawbacks when compared to plastic or composite bars. Steel is heavier, which can pose challenges in handling and transportation. Additionally, depending on the specific grade and quality, steel round bars can be more expensive than their plastic or composite counterparts. In conclusion, steel round bars surpass plastic or composite bars in terms of strength, durability, impact resistance, and heat resistance. Although they may have some drawbacks such as weight and cost, their overall performance and versatility make them the preferred choice for numerous high-performance applications.

Q: What are the different types of steel round bar surface treatments used in the automotive industry?: In the automotive industry, the most common types of steel round bar surface treatments used are galvanization, electroplating, and powder coating. Galvanization involves coating the steel with a layer of zinc to protect it from corrosion. Electroplating is a process where a thin layer of another metal, such as chrome or nickel, is applied to the steel surface for enhanced aesthetics and protection. Powder coating, on the other hand, involves applying a dry powder to the steel surface and then curing it under high heat to create a durable and attractive finish. These surface treatments help improve the durability, appearance, and overall performance of steel round bars used in automotive applications.

Q: What are the different types of steel round bars used in the automotive braking systems?: There are primarily two types of steel round bars used in automotive braking systems: solid steel round bars and hollow steel round bars. Solid steel round bars are commonly used for brake rotors and brake drums, providing strength and durability to handle the heat and friction generated during braking. Hollow steel round bars, on the other hand, are often utilized for brake caliper pistons, as they offer a lighter weight option without compromising on strength and performance.

Q: How is the weight of a steel round bar calculated?: The weight of a steel round bar is calculated using the formula: weight = volume × density. The volume of a round bar is determined by multiplying the cross-sectional area (πr^2) with the length of the bar. The density of steel is usually known, so by plugging in these values, we can calculate the weight of the steel round bar.

Q: What is the difference between a polished and a cold drawn steel round bar?: A polished steel round bar has undergone a process of buffing or grinding to smoothen its surface and improve its aesthetic appearance, while a cold drawn steel round bar is produced by pulling the steel through a die at room temperature, resulting in increased strength and dimensional accuracy.

Q: What is the typical yield strength of a steel round bar?: The yield strength of a steel round bar can vary depending on the grade of steel used. Most common grades of steel typically have a yield strength ranging from 36,000 to 80,000 psi. It should be noted that this range is a general guideline and there may be exceptions and variations among different grades of steel. The yield strength can also be influenced by factors such as the manufacturing process and any additional treatments or heat treatments applied to the steel. Therefore, it is advisable to consult the specific material specifications or seek advice from a metallurgical expert for accurate and precise information on the yield strength of a particular steel round bar.

Q: Are steel round bars susceptible to cracking?: Yes, steel round bars can be susceptible to cracking under certain conditions. The specific factors that can contribute to cracking in steel round bars include high stress levels, improper heat treatment, and the presence of impurities or defects in the material. Additionally, sudden changes in temperature or excessive loading can also increase the likelihood of cracking. It is important to note that steel round bars can vary in their susceptibility to cracking depending on the specific grade and composition of the steel. Some types of steel, such as low carbon or mild steel, are generally less prone to cracking compared to higher carbon or alloy steels. To mitigate the risk of cracking, proper handling and storage of steel round bars is crucial. This includes avoiding dropping or mishandling the bars, as well as storing them in a dry and controlled environment to prevent corrosion. Furthermore, proper heat treatment processes, such as annealing or tempering, can help improve the structural integrity of steel round bars and reduce the risk of cracking. Additionally, regular inspections and testing for any potential defects or impurities can help identify and address any issues before they lead to cracking. Overall, while steel round bars can be susceptible to cracking, taking appropriate precautions and utilizing proper manufacturing and handling techniques can minimize the risk and ensure the integrity of the bars.

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