Steel Round Bar Reliable Manufacturer with High Quality

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Loading Port:
Tianjin
Payment Terms:
TT OR LC
Min Order Qty:
55 m.t.
Supply Capability:
2000000 m.t./month
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Description of steel round bar:

1.Diameter 80 to 800 mm 
2.Black or Bright surface 
3.Annealed or Quenched and tempered provided 
4.Cutting service provide

This steel has good workability,processing deformation is small, anti fatigue performance is quite good, belongs to medium quenching steel,4140 after heat treatment, it has good strength and good comprehensive mechanical properties.The process is good.

 

Festures of steel round bar:

4340 Forged Round Steel Bar 
1.Dia 80-800mm Length:2000-13000mm or as required 
2.Technique:Forged 
3.Delivery Time:45 days
 

 

Specifications of steel round bar:

1. Standards:  AISI 4340 8620 8640 4320 , JIS SNCM8  GB:40CrNiMoA 

2. Specification: Dia: 80~450mm  Length:2000-13000mm or as required

3. Process:  EAF+LF+VD ( necessary)    UT+ Peeled +Turned + Heat Treatment (optional)


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Steel Round Bar Reliable Manufacturer with High Quality

FAQ:                                               

1. What is your package?

Packing situation: standard seaworthy packing or as customer required.

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.

Q:
There are several different surface finishes available for stainless steel round bars, including bright annealed, mill finish, brushed, polished, and satin. Each finish offers a distinct appearance and level of smoothness, allowing for various aesthetic and functional preferences.
Q:
There are several different types of steel round bars that are commonly used in automotive chassis components. These types of steel are chosen based on their specific properties and performance requirements for different components of the chassis. 1. Mild Steel Round Bars: Mild steel is the most commonly used type of steel round bar in automotive chassis components. It offers a good balance between strength, durability, and cost-effectiveness. Mild steel round bars are used in various chassis components such as brackets, supports, and reinforcements. 2. High-Strength Low-Alloy (HSLA) Steel Round Bars: HSLA steel round bars are made with a combination of low carbon content and small amounts of alloying elements such as manganese, phosphorus, and chromium. This type of steel provides higher strength and improved formability compared to mild steel. HSLA steel round bars are often used in critical chassis components like control arms, suspension components, and steering linkages. 3. Boron Steel Round Bars: Boron steel round bars are known for their exceptional strength and resistance to deformation. These bars are alloyed with boron, which imparts high hardenability and toughness to the steel. Boron steel round bars are primarily used in safety-critical chassis components like reinforced door beams and crash structures. 4. Stainless Steel Round Bars: Stainless steel round bars are corrosion-resistant and offer excellent strength and durability. While not as commonly used in automotive chassis components, stainless steel round bars may be utilized in certain specialized components that require resistance to rust and corrosion, such as exhaust system components or parts exposed to harsh environmental conditions. 5. Alloy Steel Round Bars: Alloy steel round bars are made by adding various alloying elements such as nickel, chromium, and molybdenum to enhance specific properties like strength, hardness, and wear resistance. These bars are often used in high-performance chassis components like drive shafts, axles, and gears. In summary, the different types of steel round bars used in automotive chassis components include mild steel, high-strength low-alloy steel, boron steel, stainless steel, and alloy steel. The selection of the appropriate type depends on the specific requirements of each component, including strength, durability, formability, and corrosion resistance.
Q:
Steel round bars and carbon fiber round bars are two different materials commonly used in various industries. Here is how they compare: Strength and Durability: Steel round bars are known for their exceptional strength and durability. They can withstand heavy loads, high temperatures, and harsh environments. Carbon fiber round bars, on the other hand, are also strong but are generally not as strong as steel bars. However, carbon fiber bars excel in terms of strength-to-weight ratio, making them a popular choice for applications where weight reduction is crucial. Weight: Steel round bars are significantly heavier than carbon fiber round bars. This weight difference often makes carbon fiber bars preferable in industries where weight reduction is important, such as aerospace and automotive sectors. Lighter bars can contribute to improved fuel efficiency, increased speed, and enhanced maneuverability. Corrosion Resistance: Steel round bars are prone to corrosion, especially when exposed to moisture and certain chemicals. Regular maintenance and protective coatings are often required to prevent rusting. On the other hand, carbon fiber round bars are inherently corrosion-resistant. This property makes carbon fiber bars valuable in environments where corrosion can be a concern, such as marine applications. Flexibility and Stiffness: Steel round bars are generally stiffer and less flexible compared to carbon fiber round bars. This characteristic can be advantageous in applications where rigidity and structural integrity are crucial, such as construction and heavy machinery. Carbon fiber round bars, on the other hand, offer higher flexibility and can be engineered to have different levels of stiffness, making them suitable for applications that require vibration damping or enhanced shock absorption. Cost: Steel round bars are generally more cost-effective compared to carbon fiber round bars. Steel is a widely available material, and its production costs are relatively low. Carbon fiber, on the other hand, is more expensive to produce due to the complex manufacturing process and the cost of raw materials. As a result, carbon fiber round bars tend to be pricier, limiting their use to industries where their unique properties justify the increased costs. In conclusion, steel round bars and carbon fiber round bars have their own advantages and disadvantages. Steel bars offer exceptional strength, durability, and cost-effectiveness, while carbon fiber bars excel in terms of weight reduction, corrosion resistance, flexibility, and stiffness. The choice between the two depends on the specific requirements of the application, including factors such as load-bearing capacity, weight reduction, corrosion resistance, and cost considerations.
Q:
Steel round bars cannot be extruded; instead, they are typically produced through a different process called hot rolling. In hot rolling, a cylindrical billet is heated and passed through a series of rollers to achieve the desired diameter and length. Extrusion, on the other hand, is a manufacturing process that involves forcing material through a die to create specific shapes or profiles. While steel can be extruded into various shapes such as tubes, channels, or angles, round bars are not typically produced in this way.
Q:What is the difference between cast iron and round steel?
Cast iron is composed of iron ore by crushing and grinding into powder, into the furnace after high temperature calcination into liquid (commonly known as iron) and then poured into the special mould after cooling into ingot is also called billet or iron, iron is the main component of alloy is composed of iron, carbon and silicon.
Q:
Camshafts can indeed be made using steel round bars. In fact, steel is a widely used material for camshaft production because of its exceptional strength, durability, and resistance to wear and fatigue. By machining and shaping steel round bars, they can be transformed into the desired profile, which makes them ideal for manufacturing camshafts. These camshafts are crucial components in internal combustion engines. The specific type of steel chosen will depend on the application and performance requirements. Typically, alloy steels or carbon steels with superior mechanical properties are used. In summary, steel round bars provide a reliable and cost-effective option for producing camshafts that can endure the demanding conditions of engine operation.
Q:
To calculate the cross-sectional area of a steel round bar, you need to know its diameter or radius. The formula for calculating the cross-sectional area of a circle is A = πr^2, where A is the area and r is the radius of the circle. If you have the diameter of the round bar, you can divide it by 2 to get the radius. Once you have the radius, you can substitute it into the formula to calculate the cross-sectional area. Keep in mind that the value of π is approximately 3.14159.
Q:
Steel round bars can be protected against rust by applying a protective coating such as paint, galvanizing, or epoxy. Regular maintenance, including cleaning and applying rust inhibitors, is also crucial to prevent rust formation. Additionally, storing the bars in a dry environment and avoiding exposure to moisture can help minimize the risk of rusting.
Q:
Indeed, steel round bars serve as a fitting choice for the fabrication of crankshafts. Due to their remarkable strength and durability, steel round bars find extensive use in the manufacturing process of crankshafts. The demanding conditions encountered by crankshafts during engine operation necessitate their ability to endure substantial stress and load. In this regard, steel round bars possess the essential mechanical properties to withstand such circumstances. The desired shape and dimensions required for crankshaft production can be achieved by either forging or machining steel round bars. Notably, steel showcases exceptional resistance to fatigue, a critical characteristic for crankshafts as they undergo cyclic loading. Consequently, steel round bars have garnered recognition as a suitable and universally embraced material for crankshaft production across diverse industries, including automotive and engineering.
Q:
Tin-alloy steel round bars offer several benefits in various industries: 1. Corrosion Resistance: Due to the presence of tin, these bars have exceptional resistance to corrosion. They are suitable for industries exposed to moisture, chemicals, or harsh environments like marine, automotive, and construction. 2. Enhanced Machinability: Tin-alloy steel round bars are known for their superior machinability. The addition of tin makes them easier to cut, drill, and shape, reducing tool wear and increasing productivity during machining. 3. Strength and Durability: By alloying tin with steel, these bars become stronger and more durable. They have higher tensile strength and hardness compared to regular steel bars, making them resistant to wear, deformation, and fatigue. This ensures longevity and suitability for heavy-duty applications. 4. Efficient Heat Transfer: Tin-alloy steel round bars exhibit excellent thermal conductivity. They are ideal for applications that require efficient heat transfer, such as heat exchangers, radiators, and engine components. 5. Reduced Friction: Compared to regular steel bars, tin-alloy steel round bars have a lower friction coefficient. This makes them suitable for applications where minimizing friction is crucial, like bearings, shafts, and gears. It results in reduced energy consumption and increased operational efficiency. 6. Cost-Effective Alternative: Tin-alloy steel round bars offer a cost-effective alternative to pricier materials like stainless steel or brass. They provide similar performance characteristics at a lower price point, making them a viable choice for various applications without compromising on quality. In conclusion, the advantages of using tin-alloy steel round bars include corrosion resistance, improved machinability, strength and durability, efficient heat transfer, reduced friction, and cost-effectiveness. These properties make them versatile and reliable for diverse applications across different industries.

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