• Steel Round Bar in China with High Quality Cheaper SAE1018 System 1
  • Steel Round Bar in China with High Quality Cheaper SAE1018 System 2
  • Steel Round Bar in China with High Quality Cheaper SAE1018 System 3
Steel Round Bar in China with High Quality Cheaper SAE1018

Steel Round Bar in China with High Quality Cheaper SAE1018

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Loading Port:
Tianjin
Payment Terms:
TT OR LC
Min Order Qty:
200 m.t.
Supply Capability:
20000333 m.t./month

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Description of steel round bar:

Mild steel is sometimes referred to as carbon steel or plain steel. Typically, it is stiff and strong. Carbon steelsdo rust easily, but they can be easily painted or primed. They are cheap so they are the normal choice for most fabrications. Mild Steel can be easily cut or drilled to meet your requests.

Mild Steel Round Bar is used for making security grills, screens, Construction and Machine Manufacture.


Festures of steel round bar:

Forged + Annealed + Machining (Peeled/Turned)

Rockwell  Hardness: 64-66

Quenching Temperature: 1190-1230

 

Specifications of steel round bar: 

 

Grade

Chemical Contents %

C

Si

Mn

P

S

45

0.42~0.50

0.17~0.37

0.50~0.80

≤0.035

≤0.035

50

0.47~0.55

0.17~0.37

0.50~0.80

≤0.035

≤0.035

55

0.52~0.60

0.17~0.37

0.50~0.80

≤0.035



Images of steel round bar: 

Steel Round Bar in China with High Quality Cheaper SAE1018

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:How do you measure the hardness of a steel round bar?
There are various methods to measure the hardness of a steel round bar, with the Rockwell hardness test being the most commonly used. This test involves applying a specific load to an indenter and measuring the depth of the resulting indentation on the material's surface. To measure the hardness of a steel round bar using the Rockwell hardness test, follow these steps: 1. Choose the appropriate Rockwell scale for the steel being tested. The commonly used scales for steel are HRC (Rockwell C) and HRB (Rockwell B). 2. Clean the surface of the steel round bar to eliminate any dirt, oil, or contaminants that could affect the test's accuracy. 3. Place the steel round bar on a flat and stable surface, ensuring proper support to prevent any movement during testing. 4. Select the suitable indenter for the chosen Rockwell scale. For HRC, a diamond cone indenter is typically used, while for HRB, a hardened steel ball is used. 5. Apply a preliminary minor load to the indenter, usually 10 kgf for HRC and 3 kgf for HRB. This ensures proper contact between the indenter and the material's surface. 6. Apply the major load, specific to the chosen Rockwell scale. For HRC, it is typically 150 kgf, while for HRB, it is usually 100 kgf. 7. Allow the major load to dwell for a specific period, typically 15 seconds, to ensure proper indentation. 8. Release the major load while maintaining the minor load. This allows the indenter to partially recover, reducing the depth of the indentation. 9. Measure the depth of the remaining indentation using a microscope or a specialized Rockwell hardness testing machine. The measured value corresponds to the hardness value on the chosen Rockwell scale. It's worth noting that the Rockwell hardness test is just one of several methods available to measure the hardness of a steel round bar. Depending on the specific requirements of the application, other methods like the Brinell hardness test or the Vickers hardness test may also be utilized.
Q:How do you calculate the maximum allowable stress for a steel round bar?
To calculate the maximum allowable stress for a steel round bar, several factors need to be taken into consideration. The maximum allowable stress represents the maximum amount of stress that the material can withstand before it starts to deform or fail. 1. Determine the material properties: Steel round bars come in various grades, each with their own unique material properties. These properties include the ultimate tensile strength (UTS), yield strength, and elongation percentage. These values can typically be found in material specification documents or reference books. 2. Identify the design factor: The design factor, also known as the safety factor or factor of safety, is a multiplier applied to the maximum stress to ensure the structure or component is safe and can handle unexpected or dynamic loads. The design factor can vary depending on the application and industry standards. Common values are between 1.5 and 4. 3. Calculate the allowable stress: The allowable stress is calculated by dividing the yield strength of the material by the design factor. This ensures that the structure or component operates within a safe stress range. The formula can be expressed as: Allowable Stress = Yield Strength / Design Factor. For example, if a steel round bar has a yield strength of 300 MPa and a design factor of 2, the maximum allowable stress would be 150 MPa (300 MPa / 2). This means that the steel round bar can safely withstand a maximum stress of 150 MPa before the risk of deformation or failure. It is important to note that the maximum allowable stress is just one aspect of designing a structure or component. Other factors such as fatigue, environmental conditions, and load distribution should also be taken into account to ensure a safe and reliable design. Consulting relevant engineering codes, standards, and professional guidance is highly recommended when calculating the maximum allowable stress for a specific application.
Q:Can steel round bars be used for making railway tracks?
No, steel round bars are not suitable for making railway tracks. Railway tracks require specially designed steel rails that are shaped to provide stability and support heavy loads.
Q:How are steel round bars used in the construction of bridges and buildings?
Steel round bars are widely used in the construction of bridges and buildings due to their strength, durability, and versatility. These bars are typically made of carbon steel and have a circular cross-section, making them perfect for structural applications. In bridge construction, steel round bars are commonly used for reinforcing concrete structures. They are often embedded within concrete beams, columns, and slabs to enhance their load-bearing capacity and resist bending and shearing forces. The bars are placed strategically in the concrete to provide tensile strength, which complements the compressive strength of the concrete. This reinforcement ensures that the bridge can withstand heavy loads and traffic while maintaining its structural integrity. Similarly, in building construction, steel round bars play a crucial role in reinforcing concrete structures. They are commonly used in the construction of columns, beams, and foundations to increase their load-carrying capacity and prevent structural failure. The bars are typically added to the concrete during the pouring process, forming a sturdy framework that enhances the building's strength and stability. Moreover, steel round bars are also used to create steel frames in the construction of buildings. These frames provide the skeletal structure of the building and support the weight of the floors, walls, and roofs. Steel round bars, due to their high strength-to-weight ratio, are ideal for creating lightweight yet robust frames that can withstand various loads, including wind and seismic forces. Additionally, steel round bars are used for other purposes in construction, such as the fabrication of steel reinforcements, connectors, and fasteners. They can be welded, bolted, or threaded to join different structural elements together, ensuring a secure and sturdy construction. Overall, steel round bars are an essential component in the construction of bridges and buildings. They provide the necessary strength, durability, and flexibility required to create structurally sound and long-lasting structures.
Q:Can steel round bars be used for making gears?
Yes, steel round bars can be used for making gears. Steel round bars are commonly used in gear manufacturing due to their excellent strength, durability, and resistance to wear and tear. They can be machined, heat-treated, and shaped into various gear types, such as spur gears, helical gears, and bevel gears. Steel round bars offer high precision and reliability, making them suitable for applications requiring heavy-duty and high-performance gears, such as automotive transmissions, industrial machinery, and power transmission systems.
Q:What are the different types of steel round bars used in the agricultural sector?
In the agricultural sector, there are several types of steel round bars that are commonly used due to their strength, durability, and versatility. These bars play a crucial role in various agricultural applications. 1. Mild Steel Round Bars: Mild steel is one of the most widely used types of steel in the agricultural sector. It offers excellent strength and is relatively low in cost. Mild steel round bars are commonly used in the construction of agricultural equipment, such as plows, cultivators, and harrows. 2. Carbon Steel Round Bars: Carbon steel round bars are known for their high strength and toughness. They can withstand heavy loads and are ideal for applications that require superior durability. Carbon steel round bars are commonly used in the manufacturing of tractor parts, tillage tools, and other heavy-duty agricultural machinery. 3. Alloy Steel Round Bars: Alloy steel round bars are made by adding various alloying elements to steel, such as chromium, nickel, or molybdenum. These elements enhance the strength, hardness, and corrosion resistance of the steel. In the agricultural sector, alloy steel round bars are often used in the manufacturing of high-performance components, such as gears, axles, and shafts. 4. Stainless Steel Round Bars: Stainless steel round bars are highly resistant to corrosion and have excellent mechanical properties. They are commonly used in agricultural applications that require resistance to moisture, chemicals, and harsh environments. Stainless steel round bars are often utilized in the manufacturing of dairy equipment, storage tanks, and irrigation systems. 5. Tool Steel Round Bars: Tool steel round bars are specifically designed to withstand high temperatures, abrasion, and impact. They are used in agricultural applications that involve cutting, shaping, or drilling. Tool steel round bars are commonly used in the production of blades, cutting tools, and machinery parts for crop harvesting and processing. It is important to consider the specific requirements and conditions of each agricultural application when selecting the appropriate type of steel round bar. By choosing the right steel round bar, farmers and agricultural professionals can ensure the reliability and longevity of their equipment and machinery.
Q:What are the advantages of using nickel-copper alloy steel round bars?
Nickel-copper alloy steel round bars offer several advantages. Firstly, their resistance to corrosion and oxidation is excellent, making them ideal for use in harsh environments like the marine or chemical industries. This ensures the longevity and durability of the bars, reducing the need for frequent replacements. Secondly, these round bars have outstanding mechanical properties. The addition of nickel and copper enhances their strength, toughness, and hardness, making them suitable for heavy-duty applications in construction, manufacturing, and engineering. They can withstand heavy loads and resist deformation or breakage, contributing to the overall safety and reliability of the structures or components they are used in. Another advantage is their excellent thermal stability. The alloy has a low coefficient of thermal expansion, allowing it to withstand high temperatures without significant dimensional changes. This is particularly important in applications involving extreme heat, such as in the aerospace or power generation industries. The thermal stability of the bars ensures their dimensional integrity, reducing the risk of warping or cracking under high-temperature conditions. Furthermore, Nickel-copper alloy steel round bars offer good electrical conductivity. This is beneficial in applications that require the transmission of electric current, such as electrical wiring or power distribution systems. The high electrical conductivity of the alloy ensures efficient and reliable electrical connections, minimizing power loss and maximizing performance. In conclusion, the advantages of nickel-copper alloy steel round bars include excellent corrosion resistance, superior mechanical properties, thermal stability, and good electrical conductivity. These characteristics make them suitable for a wide range of applications in various industries, providing durability, strength, and reliability.
Q:What is the difference between a ground and a polished steel round bar?
A ground steel round bar refers to a bar that has undergone a grinding process to achieve a smooth and precise outer surface. On the other hand, a polished steel round bar refers to a bar that has been polished to enhance its appearance, often resulting in a shiny and reflective surface. While both processes improve the surface quality of the bar, grinding focuses on accuracy and removing imperfections, while polishing is primarily done for aesthetic purposes.
Q:What are the advantages of using free-cutting steel round bars?
Free-cutting steel round bars boast numerous advantages. Firstly, their impeccable machinability sets them apart. These bars are specifically designed for easy machining, allowing for smooth and efficient cutting, drilling, and shaping processes. This makes them highly suitable for applications that demand precision and intricate detailing, such as the production of automotive components, machinery parts, and precision instruments. Secondly, free-cutting steel round bars offer enhanced productivity and reduced manufacturing costs. Thanks to their superior machinability, these bars significantly reduce the time and effort required for machining, resulting in higher production rates and increased efficiency. Additionally, the reduced wear and tear on cutting tools lengthens their lifespan, thereby reducing tool replacement costs and overall manufacturing expenses. Moreover, free-cutting steel round bars excel in chip control. During machining, the chips produced can impact the final product's surface finish and dimensional accuracy. However, free-cutting steel round bars are specifically formulated to generate small, manageable chips that are easily expelled from the cutting zone. This not only enhances the quality of machined parts but also minimizes the risk of chip clogging or chip-related issues. Another advantage of utilizing free-cutting steel round bars lies in their superb surface finish. These bars are often manufactured with a fine grain structure and minimal impurities, resulting in a smooth and visually appealing surface finish. This becomes particularly crucial for applications where aesthetics and appearance play a significant role, such as in architectural designs or decorative purposes. Lastly, free-cutting steel round bars offer exceptional mechanical properties. They are typically produced with controlled chemical compositions and undergo precise heat treatments, ensuring consistent and reliable mechanical performance. This renders them suitable for demanding applications that necessitate high strength, toughness, and durability. In conclusion, the benefits of employing free-cutting steel round bars encompass exceptional machinability, improved productivity, reduced manufacturing costs, superior chip control, enhanced surface finish, and reliable mechanical properties. These advantages establish free-cutting steel round bars as the preferred choice in various industries and applications.
Q:What is the maximum titanium content allowed for steel round bars?
The maximum titanium content allowed for steel round bars typically depends on the specific steel grade and composition. However, as a general guideline, the maximum titanium content in steel round bars is usually around 0.05-0.06%.

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