Steel Round Bar SS400/S20C/SAE1020/S235JR/S275JR

Steel Round Bar SS400/S20C/SAE1020/S235JR/S275JR System 1

Steel Round Bar SS400/S20C/SAE1020/S235JR/S275JR

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 25000 m.t./month

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Standard	Grade	C%	Mn%	Si%	P%	S%	Cr%	Ni%	Cu%
JIS G3103	SS330				<0.050	<0.050	<0.20
	SS400				<0.050	<0.050	<0.20
	SS490				<0.050	<0.050	<0.20
JIS G4051-2005	S15C	0.13-0.18	0.30-0.60	0.15-0.35	<0.030	<0.035	<0.20
JIS G4051-2005	S20C	0.18-0.23	0.30-0.60	0.15-0.35	<0.030	<0.035	<0.20	<0.20	<0.20
ASTM A36	ASTMA36	<0.22	0.50-0.90	<0.40	<0.040	<0.050	<0.20	<0.20	<0.20
ASTM A568	SAE1015	0.13-0.18	0.30-0.60		<0.040	<0.050	<0.20	<0.20	<0.30
	SAE1017	0.15-0.20	0.30-0.60		<0.040	<0.050	<0.20	<0.20	<0.30
	SAE1018	0.15-0.20	0.60-0.90		<0.040	<0.050	<0.20	<0.20	<0.30
	SAE1020	0.15-0.20	0.30-0.60		<0.040	<0.050	<0.20	<0.20	<0.30
EN10025	S235JR	0.15-0.20	<1.40		<0.035	<0.035	<0.20
EN10025	S275JR	<0.22	<1.40		<0.035	<0.035	<0.20

Packaging & Shipping

In Bundles with strong lines. Accordig to our experience, It's export package which can keep round bar steady.

Steel Round Bar SS400/S20C/SAE1020/S235JR/S275JR

Q: What are the different welding techniques for steel round bars?: There are several different welding techniques that can be used for steel round bars, including shielded metal arc welding (SMAW), gas metal arc welding (GMAW), gas tungsten arc welding (GTAW), and flux-cored arc welding (FCAW). Each technique has its own advantages and disadvantages, depending on factors such as the thickness of the steel, the desired weld strength, and the specific application.

Q: How do you calculate the weight of a steel round bar?: To determine the weight of a steel round bar, one can utilize the following equation: Weight = (Diameter^2 / 4) * Length * Density Within this equation, the Diameter signifies the round bar's diameter, Length denotes the bar's length, and Density represents the steel material's density. Initially, it is imperative to precisely measure the steel round bar's diameter. Subsequently, square the diameter by multiplying it by itself. Proceed to divide the outcome by 4. This shall yield the cross-sectional area of the round bar. Following this, multiply the cross-sectional area by the length of the bar. Lastly, multiply this value by the density of the steel material. Typically, the density of steel is around 7850 kg/m^3. The outcome of this computation shall furnish the weight of the steel round bar in either grams or kilograms, contingent upon the units implemented for the length and density.

Q: Can steel round bars be used for valve stem applications?: Yes, steel round bars can be used for valve stem applications. Steel round bars are commonly used in various industrial applications due to their high strength and durability. In valve stem applications, steel round bars are often used to provide stability and structural support to the valve stem, ensuring smooth operation and long-term performance. Additionally, steel round bars can be easily machined and fabricated to meet specific requirements, making them a versatile choice for valve stem applications.

Q: Can steel round bars be used in the aerospace industry?: Yes, steel round bars can be used in the aerospace industry. Steel round bars are commonly used in various aerospace applications such as structural components, engine parts, landing gear, and fasteners due to their high strength, durability, and resistance to corrosion.

Q: What is the difference between a rough turned and a seamless steel round bar?: A rough turned steel round bar refers to a metal bar that has undergone a preliminary turning process, where excess material is removed to achieve a rougher surface finish. This process helps to create a more uniform diameter and removes any surface imperfections or irregularities. Rough turned bars are commonly used in applications where a smooth surface finish is not a requirement, such as in manufacturing machinery or agricultural equipment. On the other hand, a seamless steel round bar is a solid metal bar that is formed without any welding or seams. It is manufactured through a process called piercing, where a solid billet is heated and then pierced with a mandrel to create a hollow tube. The tube is then elongated and reduced in diameter through a series of rolling and drawing processes until it reaches the desired dimensions. Seamless round bars are known for their superior strength and resistance to corrosion, making them suitable for applications where a high level of performance is required, such as in the oil and gas industry or automotive manufacturing. In summary, the main difference between a rough turned and a seamless steel round bar lies in their manufacturing processes and surface finishes. Rough turned bars are created by removing excess material to achieve a rougher surface finish, while seamless bars are formed without any welding or seams, resulting in a smooth and continuous surface.

Q: What are the different surface coatings available for steel round bars?: There are several different surface coatings available for steel round bars, including galvanized coatings, epoxy coatings, powder coatings, and chrome coatings.

Q: What are the advantages of using heat-treatable steel round bars?: There are several advantages to using heat-treatable steel round bars. Firstly, heat treatment allows for increased strength and hardness, making the bars suitable for applications that require high durability and load-bearing capacity. Secondly, heat-treatable steel round bars can be easily machined and fabricated into various shapes and sizes, providing flexibility in design and manufacturing processes. Additionally, heat treatment enhances the bars' resistance to wear, corrosion, and fatigue, increasing their lifespan and reducing maintenance costs. Lastly, the ability to customize the heat treatment process enables the bars to meet specific performance requirements, making them a preferred choice in industries such as automotive, aerospace, and construction.

Q: Can steel round bars be used in the textile industry?: Steel round bars can indeed be used in the textile industry, albeit in limited applications. While textiles are primarily made from natural or synthetic fibers, steel round bars can be utilized in the machinery and equipment used in textile production. These bars are often used to construct frames, supports, and other structural components of textile machinery. For example, steel round bars can be used to build the frames of looms, which are used to weave fabrics. They can also be used in the construction of spinning machines, knitting machines, and other textile manufacturing equipment. Additionally, steel round bars can be used as a base or support for textile drying racks, storage systems, or conveyor systems. In these applications, the strength and durability of steel make it a suitable material for withstanding the demands of industrial textile production. However, it is important to note that steel round bars are not directly incorporated into the fabric or textile products themselves.

Q: How do you determine the strength and hardness of a steel round bar?: To assess the strength and hardness of a steel round bar, a variety of tests and techniques can be utilized. The tensile strength test is a frequently employed method. During this test, an increasing load is applied to a sample of the steel round bar until it reaches its breaking point. The maximum load it can endure before breaking is recorded, providing an indication of the bar's strength. Another essential measure of steel round bar quality is hardness testing. The Rockwell hardness test is commonly used, involving the pressing of a diamond or tungsten carbide ball into the bar's surface with a specific load. The depth of the resulting indentation is measured, and the hardness value is determined according to a standardized scale. Additionally, the Brinell hardness test can be employed, which entails pressing a hardened steel ball into the round bar's surface with a specific load. The diameter of the resulting indentation is measured, allowing for the calculation of hardness based on the applied load and indentation size. Furthermore, non-destructive techniques such as ultrasonic testing and magnetic particle inspection can offer insight into the steel round bar's internal structure, defects, and cracks, indirectly indicating its strength and hardness. It is crucial to acknowledge that various factors, including steel composition, heat treatment, and manufacturing processes, can influence the strength and hardness of a round bar. Therefore, consulting relevant standards and specifications that define the expected properties for the specific type of steel round bar being tested is advisable.

Q: How are steel round bars tested for quality and compliance?: Steel round bars are tested for quality and compliance through various assessment methods such as visual inspection, dimensional measurements, chemical composition analysis, and mechanical property testing. These tests ensure that the bars meet the required standards, strength, and durability for their intended applications.

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