Flat Steel Bar

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Loading Port:: China Main Port

Payment Terms:: TT OR LC

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Supply Capability:: -

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Product Description:

Spring Steel can be divided into two types. One is carbon spring steel, and other one is alloy spring steel.

Alloy spring steel is based on carbon spring steel, by adding one or more alloying elements to improve the mechanical properties, hardenability and other properties to meet the requirement for manufacturing all kinds of spring steel.

Specification of Spring Steel:

-Material: 70Si2CrA

-Production: Hot rolled or cold rolled

-Standard: GB/T·5218-1999

-Type: Spring Steel

-Alloy or no: Alloy

Chemical Composition:

C	Mn	Si	Cr
0.65~0.75	0.40~0.60	1.40~1.70	0.20~0.40
S	P	Ni
≤0.030	≤0.030	≤0.030

Mechanical Properties:

-Annealing Condition:

1, Tensile Strength: σb/MPa：≤835

2, Elongation: δ/%：≥8

-Quencher condition:

1, Tensile strength: σb/MPa：785~1175

2, Elongation: -

Usage/Applications of Spring Steel:

For manufacturing all kinds of flat spring or round spring with small sections, clockwork spring,

Packaging & Delivery of Spring Steel:

-Packing Detail: The products can be packed in bundles by steel wires.

-Marks:

1, Tag marks: the tag marks will be tied up to each bundle of the products. The information is usually including supplier’s logo and name, product name, made in China, products’ specifications, the painted color and other information requested by customers.

2, Color marks: we will paint both ends of the bundles of these products to make sure that they are more evident. It’s will be more convenient for the customers to distinguish them at the destination port.

-Delivery Detail:

1, Delivery time: 30~45 working days after receive buyer’s T.T. or L/C.

2, Delivery status should be written in the contract. (Heat treatment or no)

Payment:

-Invoicing on theoretical weight or actual weight as customer’s request.

-FOB, CFR or CIF.

-Regular terms of payment:

1, 30% payment in advance, the remaining balance (70% payment) against the copy of B/L. 100% payment before shipment.

2, 30% payment in advance, the remaining balance (70% L/C) against the copy of B/L. 100% payment before shipment.

3, Negotiable.

Q:How do you determine the strength of a steel flat bar?: There are several methods available for determining the strength of a steel flat bar. One commonly used approach is through tensile testing, which involves applying a pulling force on a specimen until it fractures. This test allows for the measurement of load, deformation, stress, and strain, which can then be used to calculate various mechanical properties such as yield strength, ultimate tensile strength, and elongation. Another method to assess the strength of a steel flat bar is through hardness testing. Hardness is a measure of the material's resistance to indentation or scratching, and it is often indicative of its overall strength. Popular hardness tests for steel include Brinell, Rockwell, and Vickers tests. Furthermore, the strength of a steel flat bar can also be determined by considering its chemical composition. Steel is primarily composed of iron and carbon, but other elements like manganese, chromium, and nickel are added to enhance specific properties. The composition and heat treatment of the steel can greatly influence its strength. It is worth noting that the bending properties of a steel flat bar, such as flexural strength, can also be assessed through tests like the three-point bending test or the four-point bending test. These tests determine the maximum load a specimen can withstand before breaking or yielding under bending forces. In summary, the strength of a steel flat bar can be determined using methods such as tensile testing, hardness testing, considering its chemical composition, and analyzing its bending properties. These approaches provide valuable insights into the steel's mechanical properties, enabling engineers and manufacturers to choose the most suitable steel grade for specific applications.

Q:What are the standards for the use of galvanized steel angles and flat steel for grounding?: The distance of the grounding body from the building is over 1.5m, and the distance from the grounding rod of the independent lightning conductor is greater than 3m.(5) the connection of grounding wire and earthing body shall be done by lap welding.

Q:Are steel flat bars suitable for indoor or outdoor applications?: Steel flat bars are suitable for both indoor and outdoor applications.

Q:How do steel flat bars contribute to the overall efficiency of industrial structures?: Steel flat bars contribute to the overall efficiency of industrial structures in several ways. First and foremost, their durability and strength make them an ideal choice for structural components. Steel flat bars are known for their high tensile strength, which means they can withstand heavy loads and provide structural stability. This strength allows for the construction of taller and more complex industrial structures that can house various equipment and machinery. Furthermore, steel flat bars are highly versatile and can be easily fabricated, cut, and welded to fit specific design requirements. This flexibility enables engineers and architects to create customized industrial structures that maximize space utilization and optimize workflow. Whether used as support beams, braces, or reinforcements, steel flat bars can be tailored to meet the specific needs of a project, reducing construction time and costs. In addition, steel flat bars are resistant to corrosion and can withstand extreme weather conditions, making them suitable for both indoor and outdoor industrial structures. This resistance ensures longevity and reduces the need for frequent maintenance, saving both time and money in the long run. Moreover, steel flat bars are readily available and cost-effective compared to other materials. Their widespread availability and standardized sizes make procurement and construction processes more efficient, resulting in shorter lead times. This accessibility also allows for easy repairs and modifications, ensuring that industrial structures can adapt to changing needs and technologies without significant disruptions. Overall, steel flat bars contribute to the efficiency of industrial structures by providing strength, versatility, durability, and cost-effectiveness. Their usage enhances the structural integrity of buildings, optimizes space utilization, reduces maintenance requirements, and allows for easy customization. As a result, steel flat bars play a crucial role in the construction of efficient and reliable industrial structures.

Q:What are the different methods of surface embossing for steel flat bars?: Steel flat bars can be embossed using various methods. One commonly used technique is roller embossing, where the flat bar is passed between two rollers with a patterned surface. As the bar goes through the rollers, the pattern is imprinted onto its surface, resulting in an embossed design. Another method is press embossing, where the flat bar is positioned between a patterned die and a matching counter die. By applying pressure to the dies, the pattern is pressed into the bar's surface. Laser embossing is a third option, which entails utilizing a laser beam to selectively remove material from the bar's surface in a patterned way. This method allows for the creation of diverse embossed patterns, as the laser can be controlled accordingly. Furthermore, chemical embossing is also available. This involves applying a chemical solution to the bar's surface, which reacts with the metal and forms an embossed pattern. Each method possesses its own set of advantages and disadvantages. The choice of method depends on factors such as the desired pattern, design complexity, and project constraints such as cost and time limitations.

Q:How can I prevent rusting on steel flat bars?: To prevent rusting on steel flat bars, you can take several preventive measures. Firstly, ensure that the flat bars are properly cleaned and free from any dirt, debris, or moisture before storage or use. This can be done by wiping them down with a dry cloth or using a mild soap and water solution if necessary. Next, you should apply a protective coating or finish to the steel flat bars. There are various options available such as painting, powder coating, or applying a rust-resistant primer. These coatings act as a barrier between the steel and the environment, preventing moisture and oxygen from reaching the metal surface and causing rust to form. Additionally, you can consider using corrosion-resistant materials for the construction of your steel flat bars. Stainless steel, for instance, contains chromium which forms a protective layer on the surface, making it highly resistant to rusting. Galvanized steel is another option, as it is coated with a layer of zinc to provide excellent corrosion resistance. Proper storage is also crucial to prevent rusting. Keep the steel flat bars in a dry and well-ventilated area, away from any moisture or humidity. If stored outdoors, ensure that they are covered and protected from rain and other elements. Regular maintenance is essential as well. Inspect the flat bars periodically for any signs of rust or damage. If any rust spots are detected, remove them immediately using a wire brush or sandpaper, and apply a touch-up coating to prevent further corrosion. By following these preventive measures, you can significantly reduce the chances of rusting on steel flat bars and prolong their lifespan.

Q:What is the maximum length-to-height ratio for steel flat bars?: The length-to-height ratio of steel flat bars is influenced by several factors, including the specific steel grade, manufacturing process, and industry standards. Typically, the length-to-height ratio of steel flat bars falls within the range of 6:1 to 12:1. In other words, the length of the flat bar can be up to 6 to 12 times its height. It is important to bear in mind that surpassing these ratios could lead to decreased structural integrity and heightened risks of buckling or bending. Consequently, it is of utmost importance to refer to appropriate industry standards and engineering guidelines to ensure the safe and efficient utilization of steel flat bars in various applications.

Q:Can steel flat bars be used for manufacturing tools?: Yes, steel flat bars can be used for manufacturing tools. Steel flat bars are commonly used in tool manufacturing due to their high strength, durability, and versatility. These bars can be easily shaped and machined into various tool designs, making them suitable for a wide range of applications. Steel flat bars are also known for their resistance to wear and tear, making them ideal for tools that require frequent use and contact with hard materials. Additionally, steel flat bars can be heat-treated to enhance their mechanical properties, such as hardness and toughness, further improving their suitability for tool manufacturing.

Q:What are the different methods of surface coloring for steel flat bars?: Steel flat bars can be surface colored in various ways, each offering unique benefits and applications. Some commonly used methods include: 1. Hot-dip galvanizing: By immersing the steel flat bar in molten zinc, a protective layer forms on the surface. This method excels in outdoor or high-moisture environments, providing excellent corrosion resistance. 2. Powder coating: Here, a dry powder paint is applied to the steel flat bar's surface and then cured with heat. Powder coating offers a wide range of colors, exceptional durability, and resistance to chipping, scratching, and fading. 3. Electroplating: Using an electric current, a thin layer of metal like chrome or nickel is deposited onto the steel flat bar's surface. This method enhances appearance and provides corrosion resistance. 4. Paint coating: The conventional approach of directly applying paint to the steel flat bar's surface is still popular. It offers a wide variety of colors and finishes, though durability and corrosion resistance may not match other methods. 5. Chemical coloring: By using chemicals, a controlled oxidation process is initiated on the steel flat bar's surface, resulting in various colors and shades. Chemical coloring enhances appearance and boosts corrosion resistance. 6. Anodizing: Primarily used for aluminum but applicable to steel flat bars, anodizing involves creating an oxide layer through electrochemical means. This process enhances corrosion resistance and allows for color addition through dyes. Each method has its own advantages and considerations, including cost, environmental impact, durability, and aesthetic appeal. The choice of surface coloring method depends on specific requirements, such as desired appearance, corrosion resistance level, and budget constraints.

Q:What are the different grades of steel used in flat bars?: The different grades of steel used in flat bars can vary, but some commonly used grades include mild steel, carbon steel, stainless steel, and alloy steel. These grades are chosen based on the specific requirements of the intended application, such as strength, corrosion resistance, and durability.

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