42CrMO SCM440 Forged or Hot Rolled Sae 4140 Steel Round Bars
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 70 m.t.
- Supply Capability:
- 2000000 m.t./month
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Description of steel round bar:
Mild Steel Round Bar is used for making security grills, screens, Construction and Machine Manufacture.Stainless steel bar is widely used in Architecture,Machine Manufacture,Power Station,Electric Equipment and Factory,Oil and Chemical Industry,Food and Medical Industry,City Decoration Industry
Festures of steel round bar:
Length: standard 6m,9m,12m, or as customers' requirement
Surface: Black, polished, grinded, ,Bright, Turn smooth(Peeled),Brush,Mill,Pickled
Process:Hot rolled,cold drawn,forged
Packing: In bundle, tied by steel straps, covered with protecting film
Use wooden box, fill with foam to keep the surface from damaging
Specifications of steel round bar:
Description : Steel Bar/Stainless Steel Round Bar/Alloy Steel Round Bar/Carbon Steel Bar
Stainless Steel Bright Bar/Stainless Steel Peeled Bar/Stainless Steel Polishing Bar
Diamater:
1 Hot rolled round bar diameter from 5.5mm to 110mm
2.Hot forged round bar diameter from 110mm to 400mm
3.Cold drawn round bar diameter from 2.0mm to 60mm
4.Grinding bar diameter from 4.0mm to 40mm
5.Turn smooth diameter from 40mm to 250mm
Images of steel round bar:
FAQ:
1. What is your main market?
We mainly export to Asia such as Japan,Korea,Thailand and North America and Middle East.
2. How long is the lead time?
Delivery time: 45 days after order confirmed.
3. What payment term do you accept?
Payment: T/T or L/C at sight.
4.Why do you choose to cooperate with us?
We have over10 years experience in this business so we are able to provide you the high quality products with the best price.
- Q: What are the typical tolerances for steel round bars?
- The specific requirements of the application or industry can cause variations in the typical tolerances for steel round bars. However, common standard tolerances are generally accepted. Regarding diameter, the tolerances for steel round bars typically fall within a few thousandths of an inch. This means that the actual diameter of the bar may slightly deviate from the specified diameter, but it will still be within an acceptable range. In terms of straightness, steel round bars are commonly manufactured with a tolerance for some deviation from a perfectly straight line. The usual tolerance for straightness is measured in units of inches per foot or millimeters per meter. This means that the bar may have a slight bend or curve, but it should not exceed the specified tolerance. Surface finish is another important factor for steel round bars. The tolerance for surface finish is usually specified in terms of roughness average (Ra) or surface roughness in micrometers. This tolerance ensures that the bar's surface is smooth and free from significant imperfections, such as pits or scratches. It is important to note that these typical tolerances can vary depending on the specific grade or type of steel used, as well as the intended application. Precision or critical applications may require tighter tolerances, while less demanding applications may accept looser tolerances. Therefore, it is recommended to consult relevant industry standards or specifications to determine the specific tolerances required for a particular steel round bar.
- Q: What is the maximum weight capacity of a steel round bar?
- The maximum weight a steel round bar can hold depends on several factors, including its diameter, length, grade, and type of steel. Steel round bars are available in various sizes and grades, each with its own load-bearing capacity. To determine the maximum weight a steel round bar can handle, you need to calculate its cross-sectional area using the formula: Area = π * (diameter/2)^2. Here, π represents a mathematical constant that is approximately equal to 3.14159. Once you have the cross-sectional area, you can estimate the weight of the bar by multiplying it with the density of the specific steel grade. The density of steel varies based on the grade, but as a general approximation, it is around 7850 kilograms per cubic meter (or 0.00785 grams per millimeter cubed). However, it's important to remember that weight capacity alone may not be the only factor to consider for the safe use of a steel round bar. Other factors like load distribution, applied forces, and the structural integrity of the bar are equally important to ensure safe operation. For accurate weight capacity information for a specific steel round bar, it is recommended to refer to the manufacturer's specifications or consult a qualified engineer or professional who can provide precise calculations based on the specific requirements and characteristics of the steel round bar in question.
- Q: What are the different types of steel round bar surface treatments used in the aerospace industry?
- The aerospace industry utilizes various surface treatments for steel round bars to enhance performance and durability. These treatments are carefully designed to meet the industry's strict standards. Some commonly employed treatments in the aerospace industry are as follows: 1. Passivation: This treatment eliminates iron particles and contaminants from the steel round bar's surface. It prevents corrosion and enhances the material's overall corrosion resistance. 2. Shot Peening: Shot peening involves bombarding the steel round bar's surface with small metallic shots. This treatment induces compressive stress on the surface, thereby improving the material's fatigue strength and resistance to stress corrosion cracking. 3. Electroplating: Electroplating is a widely used surface treatment in the aerospace industry. It involves depositing a layer of metallic coating onto the steel round bar through an electrochemical process. This treatment enhances corrosion resistance, wear resistance, and aesthetic appearance. 4. Anodizing: Anodizing is an electrolytic passivation process commonly employed for aluminum alloys, but it can also be used for steel round bars. This treatment forms a thick, durable, and corrosion-resistant oxide layer on the surface, improving resistance to wear, corrosion, and scratching. 5. Nitriding: Nitriding is a surface hardening treatment that involves diffusing nitrogen into the steel round bar's surface. This treatment enhances surface hardness, wear resistance, and fatigue strength. 6. Chemical Conversion Coating: Chemical conversion coating forms a thin, protective layer on the steel round bar's surface. This coating enhances corrosion resistance and provides a suitable base for subsequent paint or coating applications. These examples demonstrate some of the various steel round bar surface treatments employed in the aerospace industry. Each treatment offers distinct advantages and is selected based on specific application requirements, including corrosion resistance, wear resistance, fatigue strength, and aesthetic appearance.
- Q: How do you prevent scaling of steel round bars during heat treatment?
- One way to prevent scaling of steel round bars during heat treatment is by using a protective atmosphere such as nitrogen or hydrogen gas. This atmosphere helps create a barrier between the steel surface and the oxygen in the air, preventing oxidation and scaling. Additionally, applying a coating or using a salt bath can also provide a protective layer on the steel surface, minimizing scaling during the heat treatment process.
- Q: Can steel round bars be used in the manufacturing of lighting fixtures?
- Lighting fixtures can indeed be manufactured using steel round bars. Steel, being a flexible and long-lasting material, can offer both structural support and aesthetic appeal to lighting fixtures. By molding steel round bars into different shapes and sizes, various components of lighting fixtures can be created, including frames, bases, and decorative elements. Moreover, steel can be easily manipulated through processes like welding, bending, or machining, allowing it to meet specific design requirements. Another noteworthy aspect is that steel demonstrates excellent resistance to corrosion, ensuring that lighting fixtures made from steel round bars can endure challenging environments and have a prolonged lifespan. In conclusion, the strength, adaptability, and ability to enhance the overall design aesthetic make steel round bars a popular choice in the production of lighting fixtures.
- Q: What is the difference between a solid round bar and a hollow round bar?
- A cylindrical shape, known as a solid round bar, consists of a single material, typically metal or plastic. It maintains a consistent diameter throughout its length, without any empty space inside. In contrast, a hollow round bar also has a cylindrical shape but contains a hollow space within its center. This hollow space creates a tube-like structure within the bar. The outer diameter remains constant, but the inner diameter varies depending on the design and purpose of the hollow round bar. The primary distinction between a solid round bar and a hollow round bar lies in their structural characteristics and potential uses. The solid round bar offers strength and rigidity due to its solid core, making it suitable for applications requiring robust support or load-bearing capabilities. It finds common usage in construction, manufacturing, and engineering projects where strength and durability are vital. Conversely, the hollow round bar combines strength with a lightweight design. The presence of the hollow space reduces the overall weight while maintaining structural integrity. This makes hollow round bars ideal for applications prioritizing weight reduction, such as in the aerospace, automotive, and marine industries. Furthermore, the hollow space can serve various purposes, such as facilitating the passage of fluids, wires, or other components through the bar. In conclusion, while both solid and hollow round bars possess a cylindrical shape, the presence or absence of a hollow space distinguishes them. Solid round bars offer strength and rigidity, while hollow round bars strike a balance between strength and reduced weight, with the potential for additional functionality. The choice between the two depends on the specific requirements and intended application of the bar.
- Q: Can steel round bars be anodized?
- No, steel round bars cannot be anodized. Anodizing is a process that is specific to aluminum and its alloys.
- Q: What is the toughness of a steel round bar?
- The toughness of a steel round bar refers to its ability to resist fracture or deformation under stress. It is a measure of how well the steel can absorb energy and withstand impact without breaking. The toughness of a steel round bar depends on various factors such as the composition of the steel, its microstructure, and any heat treatment it has undergone. Generally, high-strength and alloy steels tend to have higher toughness due to their enhanced mechanical properties. Additionally, factors such as the presence of impurities, grain size, and the presence of any defects or cracks within the material can also affect its toughness. To determine the toughness of a steel round bar, tests such as the Charpy impact test or the Izod test are commonly performed to measure the energy absorbed by the material before it fractures. Overall, the toughness of a steel round bar is an important characteristic to consider when selecting a material for applications where high impact resistance is required, such as in construction, automotive, or aerospace industries.
- Q: Can steel round bars be used for making molds?
- No, steel round bars are not typically used for making molds. Molds are usually made from materials such as silicone, rubber, or various types of plastics that can easily be molded and shaped to create the desired form. Steel round bars are better suited for structural purposes or as support rods.
- Q: Can steel round bars be used for making body panels?
- Yes, steel round bars can be used for making body panels. Steel is a commonly used material in the automotive industry due to its strength, durability, and formability. Round bars can be shaped, welded, and formed into various body panel shapes, providing structural support and protection. However, it's important to note that steel round bars might not be the ideal choice for all body panels, as they can be heavier compared to alternative materials such as aluminum or carbon fiber. The decision to use steel round bars for body panels depends on factors such as the specific vehicle application, desired weight reduction, and cost considerations.
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42CrMO SCM440 Forged or Hot Rolled Sae 4140 Steel Round Bars
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 70 m.t.
- Supply Capability:
- 2000000 m.t./month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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