12L14 Steel Free Cutting Steel Round Bar

12L14 Steel Free Cutting Steel Round Bar System 1

12L14 Steel Free Cutting Steel Round Bar System 2

12L14 Steel Free Cutting Steel Round Bar System 3

12L14 Steel Free Cutting Steel Round Bar System 4

12L14 Steel Free Cutting Steel Round Bar

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 5 m.t.

Supply Capability:: 100000 m.t./month

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Specifications

1. Material:12L14
2. Size: 0.2mm-16mm
3. Stable quality
4. Competitive price

We own the eight profassion engineers of high strength steel wire,and five QC to keep the products good quality so that in oversea marketing .we have been getting good reputation for over 10 years.

Next we introduce the products as follows:

1. Steel grade: 12L14; SUM24L.

2. Diameter: 0.2mm-16mm.

3. Application: machinery, mechanical parts, instruments, auto parts and so on.

4. Tolerance standard: h8; h9, h10; h11.

Chemical composition& Tolerance

Grade	JIS	C	Si	Mn	P	S	Pb
12L14	SUM24L	0.15max	0.15-0.35	0.85-1.15	0.04-0.09	0.26-0.35	0.10-0.35
	S25CL	0.22-0.28	0.15-0.35	0.30-0.6	0.03max	0.035max	0.10-0.35
	S45CL	0.42-0.48	0.15-0.35	0.60-0.9	0.03max	0.035max	0.10-0.35
1215	SUM23	0.09max		0.75-1.05	0.04-0.09	0.26-0.35
	SUN25	0.15max		0.90-1.40	0.07-0.12	0.30-0.40
Tolerance
Range	H8	H9(Round bar)	H10(Hexagonal bar)	H11	H12
<3mm	0-0.014	0-0.025	0-0.040	0-0.060	0-0.10
3-6mm	0-0.018	0-0.030	0-0.048	0-0.075	0-0.12
6-10mm	0-0.022	0-0.036	0-0.058	0-0.090	0-0.15
10-18mm	0-0.022	0-0.043	0-0.070	0-0.11	0-0.18
18-30mm	0-0.033	0-0.052	0-0.084	0-0.13	0-0.21
30-50mm	0-0.039	0-0.062	0-0.100	0-0.16	0-0.25

12L14 Steel Free Cutting Steel Round Bar

Q: What are the different types of steel round bar profiles?: There are several different types of steel round bar profiles, including solid round bars, hollow round bars, and threaded round bars.

Q: How do you measure the straightness of a steel round bar?: There exist several methods for measuring the straightness of a steel round bar. One commonly employed approach involves using a straight edge or ruler, which is positioned along the length of the bar to check for any gaps or deviations. If the bar is completely straight, it should make contact with the straight edge throughout its entire length. Any gaps or deviations indicate that the bar is not perfectly straight. Another method involves the utilization of a laser alignment system. This method entails placing the round bar on a flat surface and projecting a line along its length using a laser. The projected line will reveal any deviations or bends in the bar. This method provides a more precise measurement of straightness. Moreover, a dial indicator, a precision measuring instrument, can also be employed. This device includes a small probe that is placed against the surface of the round bar. As the bar is rotated, the dial indicator will measure any variations in the surface, thereby indicating any bends or deviations from straightness. It is worth noting that the required level of straightness will vary depending on the specific application of the steel round bar. In certain cases, a slight deviation may be acceptable, while in others, a high level of straightness may be imperative.

Q: Are steel round bars resistant to abrasion?: Yes, steel round bars are generally resistant to abrasion due to their hardness and durability.

Q: How do steel round bars perform under cyclic loading?: Steel round bars generally perform well under cyclic loading due to their high strength and ductility. The ability of steel to withstand repeated loading and unloading without significant deformation or failure makes it suitable for applications where cyclic loading is present, such as in structural engineering, automotive components, and machinery. However, the performance of steel round bars under cyclic loading also depends on factors like the quality of the steel, design considerations, and the magnitude and frequency of the cyclic loading.

Q: Are steel round bars available in different surface finishes?: Yes, steel round bars are available in different surface finishes. The surface finish of a steel round bar refers to the treatment or coating applied to the surface to enhance its appearance, protect it from corrosion, or improve its performance in specific applications. Common surface finishes for steel round bars include polished, brushed, mill finish, galvanized, and coated with materials like chrome, nickel, or zinc. These different surface finishes cater to various requirements and preferences in terms of aesthetics, protection against corrosion, and functionality in different industries and applications.

Q: What are the different surface treatments available for carbon steel round bars?: There are several different surface treatments available for carbon steel round bars, each serving a specific purpose and offering unique benefits. Some of the most common surface treatments for carbon steel round bars include: 1. Galvanizing: This treatment involves applying a layer of zinc to the surface of the carbon steel round bar. Galvanizing provides excellent corrosion resistance and can significantly extend the lifespan of the steel. 2. Black oxide coating: Also known as blackening, this treatment creates a dark, uniform finish on the surface of the carbon steel round bar. Black oxide coatings offer mild corrosion resistance and can also provide improved lubricity and a decorative appearance. 3. Chromium plating: This treatment involves depositing a layer of chromium onto the surface of the carbon steel round bar, typically through electroplating. Chromium plating enhances the corrosion resistance of the steel and can also provide improved wear resistance and a polished appearance. 4. Nitriding: Nitriding is a heat treatment process that diffuses nitrogen into the surface of the carbon steel round bar, forming a hard and wear-resistant layer. This treatment improves the hardness and fatigue strength of the steel, making it suitable for applications that require enhanced durability. 5. Phosphating: Phosphating is a chemical treatment that converts the surface of the carbon steel round bar into a layer of phosphate crystals. This treatment provides excellent corrosion resistance and also enhances the adhesion of coatings or paints applied to the steel. 6. Powder coating: Powder coating involves applying a dry powder to the surface of the carbon steel round bar and then curing it under heat to form a protective coating. Powder coatings offer excellent corrosion resistance, durability, and can be customized in various colors and finishes. These are just a few examples of the surface treatments available for carbon steel round bars. The choice of treatment depends on the specific requirements of the application, such as corrosion resistance, wear resistance, aesthetics, and cost-effectiveness.

Q: How do steel round bars compare to carbon fiber round bars?: Steel round bars and carbon fiber round bars have different characteristics and applications. Steel round bars are known for their high strength and durability, making them suitable for heavy-duty applications. They can withstand higher loads and provide excellent resistance against wear and tear. On the other hand, carbon fiber round bars are significantly lighter than steel bars while still maintaining high strength. They are commonly used in applications where weight reduction is crucial, such as aerospace and sports equipment. Carbon fiber round bars also offer better corrosion resistance compared to steel. The choice between steel and carbon fiber round bars depends on the specific requirements of the application, considering factors such as strength, weight, and cost.

Q: What is the difference between a seamless and a welded steel round bar?: The main difference between a seamless and a welded steel round bar lies in their manufacturing process and the resulting structural integrity. A seamless steel round bar is produced by piercing a solid billet of steel and then rolling it into a round shape. This process ensures that there are no seams or welds in the bar, resulting in a smooth and continuous surface throughout its length. The absence of a weld eliminates the potential weaknesses and vulnerabilities associated with welded joints. Seamless steel bars are typically more uniform in composition and have a higher strength-to-weight ratio due to the absence of welds. On the other hand, a welded steel round bar is created by joining multiple pieces of steel together using various welding techniques. The steel pieces are heated and fused together at the edges to form a continuous bar. While the welding process provides flexibility in terms of length and diameter options, the presence of a weld can introduce certain structural concerns. Welded joints may be prone to defects, such as porosity or inclusions, which can compromise the overall strength and integrity of the bar. However, advancements in welding technology and quality control have significantly improved the reliability of welded steel round bars. In terms of applications, seamless steel round bars are often preferred in critical industries where high strength, reliability, and resistance to corrosion are essential. These industries may include oil and gas, aerospace, and automotive sectors. Welded steel round bars, on the other hand, are commonly used in less demanding applications where cost-effectiveness and availability are primary factors, such as construction, manufacturing, and general engineering. In summary, the key differences between seamless and welded steel round bars lie in their manufacturing process and resulting structural characteristics. Seamless bars are produced without any welds, offering a smoother surface, higher strength-to-weight ratio, and greater resistance to defects. Welded bars, while more cost-effective and readily available, may have weld-related vulnerabilities that need to be considered depending on the application. Ultimately, the choice between the two depends on the specific requirements and priorities of the intended use.

Q: How do steel round bars resist corrosion?: Steel round bars resist corrosion through a combination of factors. Firstly, steel itself is an alloy made primarily of iron and carbon, and the addition of other elements such as chromium, nickel, and molybdenum enhances its corrosion resistance. These alloying elements form a protective oxide layer on the surface of the steel, which acts as a barrier against corrosive elements in the environment. Furthermore, steel round bars can undergo additional surface treatments or coatings to further enhance their resistance to corrosion. One common method is galvanization, where the steel is coated with a layer of zinc. This zinc coating serves as a sacrificial layer, corroding first before the steel itself is affected. Additionally, steel round bars can be coated with epoxy or other polymer coatings to provide an extra layer of protection. It is also important to note that the manufacturing process and quality of the steel round bars play a significant role in their corrosion resistance. Proper heat treatment, refining processes, and quality control measures ensure that the steel has a homogeneous microstructure and minimal impurities, reducing the likelihood of corrosion. Overall, the combination of alloying elements, surface treatments, and quality manufacturing processes contribute to the corrosion resistance of steel round bars, making them a reliable choice for applications in corrosive environments.

Q: What are the common finishes for steel round bars?: Steel round bars can be finished in several ways, each offering unique properties and aesthetic appeal. Some of the most common finishes are as follows: 1. Achieving a rough and scaled surface, hot rolling involves rolling the steel at a high temperature. This finish is commonly preferred for applications where a rough texture is desired, such as structural components or machinery. 2. Cold rolling, on the other hand, results in a smoother and more polished surface. It is achieved by rolling the steel at room temperature and is often used in industries like automotive or aerospace, where a clean and precise appearance is required. 3. For a smooth and polished surface, the steel round bar can be turned and polished. This finish involves machining the bar and is commonly used for decorative purposes or in applications where precision is crucial, such as shafts or fasteners. 4. By grinding the steel round bar, any surface imperfections or irregularities can be removed, resulting in a smooth and uniform finish. This finish, known as grinding, is suitable for applications where tight tolerances or a consistent finish are essential. 5. Alternatively, steel round bars can be coated or plated with different materials to enhance their corrosion resistance or aesthetic appeal. Popular options include galvanizing, which involves applying a layer of zinc to protect against rust, or chrome plating, which provides a shiny and attractive finish. Ultimately, the choice of finish for a steel round bar depends on the specific requirements of the application, such as the desired appearance, corrosion resistance, or mechanical properties needed.

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