Cold Rolled Steel/Black Steel Rolled different size

Cold Rolled Steel/Black Steel Rolled different size System 1

Cold Rolled Steel/Black Steel Rolled different size

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Loading Port:: Shanghai

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 9000 m.t./month

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Product Description

Brief Introduction
The Cold Rolled Steel is steel that has been worked below its recrystallization temperature by passing it between a pair of rollers. Recrystallization temperature is the temperature at which grains in the lattice structure of the metal have been rearranged, leaving it free of strain and deformations. The Cold Rolled Steel is pre-treated before being cold rolled with a process known as pickling, which uses strong acids to remove scale and other impurities. The Cold Rolled Steel is then passed through rollers to reduce its thickness. Most cold rolling takes place in multiple passes and as the size of the Cold Rolled Steel is further reduced, its strength and hardness both increase, but its ductility decreases. After cold rolling, heating the metal up in a process known as annealing can restore some of its ductility. The final Cold Rolled Steel may be manufactured in the form of sheets, strips, bars, or other forms.

Specification
1. Thickness: 0.4-2.0mm
2. Width: 900-1250mm
3. Inner Diameter: 508mm
4. Weight of Steel Coil: 3-15MT
5. Heat Treatment: Annealed
6. Margin Status: EC & EM
7. Surface Quality: FB&FC
8. Surface Status: SB & SD
9. Surface Treatment: Oiling

Mechanical Properties
1. Yield Strength: ≤ 320MPa
2. Tensile Strength: ≤ 370MPa
3. Elongation (L=50mm, b=25mm) When:
(1) Nominal Thickness <0.25mm: 30%
(2) Nominal Thickness 0.25mm-<0.40: 32%
(3) Nominal Thickness 0.40-<0.60mm: 34%
(4) Nominal Thickness 0.60-<1.0mm: 36%
(5) Nominal Thickness 1.0-<1.6mm: 37%
(6) Nominal Thickness >1.6mm: 38%

Packing
We use Seaworthy Package to make sure Cold Rolled Steel is well-protected during the long ocean voyage.

Application
1. Base metal for coated and dipped products.
2. Home appliance
3. Precise welding tube
4. Flux cored welding wire
5. Bicycle, battery shell,
6. Automobile fitting, hardware
7. Enameling industry etc.

Superiority
1. High precision of dimensional tolerance
2. Excellent mechanical property such as the yield strength and tensile strength, etc.
3. Being highly resistant to denting
4. Exhibits useful magnetic properties
5. High quality surface finish and get well prepared for the surface coating
6. Available in a variety of sizes and shapes with characteristics useful in a wide range of applications

Chemical Components

Grade	Chemical Components
Grade	C	Mn	P	S	Alt
DC01	≤0.12	≤0.50	≤0.035	≤0.025	≥0.020
DC03	≤0.10	≤0.45	≤0.030	≤0.025	≥0.020
DC04	≤0.08	≤0.40	≤0.025	≤0.020	≥0.020

Cold Rolled Steel/Black Steel Rolled different size

FAQ

1. Do you have QC team?
Yeah, sure, our QC team is very important, they will keep the quality control for our products.for quality inspection every day.

Q: How does the thickness of a steel coil affect its applications?: The thickness of a steel coil has a significant impact on its applications. The thickness determines the strength, durability, and versatility of the steel, making it suitable for various uses across different industries. In applications where strength is crucial, such as the construction industry, thicker steel coils are preferred. Thicker coils provide higher structural integrity and load-bearing capacity, which is essential in buildings, bridges, and infrastructure projects. Thicker steel coils also offer better resistance to bending, warping, and other forms of deformation, making them ideal for heavy-duty applications. The thickness of a steel coil also affects its durability. Thicker coils have a higher resistance to wear, corrosion, and damage, making them suitable for harsh environments or applications that involve constant friction or exposure to elements. For example, thicker steel coils are commonly used in manufacturing heavy machinery, automotive parts, and mining equipment, where durability is paramount. Furthermore, the thickness of a steel coil determines its versatility and adaptability. Thinner coils can be easily formed into different shapes and sizes, making them suitable for applications that require intricate designs or tight tolerances. Industries such as automotive, aerospace, and consumer electronics often rely on thinner steel coils for their lightweight and flexible nature. On the other hand, thicker steel coils may limit the range of applications due to their weight and reduced flexibility. They are more suitable for applications that prioritize strength and durability over versatility. These applications include structural components, large-scale machinery, and industrial equipment. In summary, the thickness of a steel coil plays a crucial role in determining its applications. Thicker coils offer increased strength, durability, and resistance, making them ideal for heavy-duty applications in construction and manufacturing industries. Thinner coils, on the other hand, provide versatility and adaptability, making them suitable for applications that require intricate designs or lightweight properties.

Q: Hello,is it possible to divide an alloy in its own elements? I am particularly interested in Stainless Steel, which is made of Nickel, Chrome and Iron. Do you have an idea of where can I find some more information (blogs, reviews, sites or books)?Thanks for your help: All you have to do is heat the alloy. Since an alloy is a physical mixture heating will be able to separate the different elements according to their melting point. All elements have their own unique melting point.

Q: What we have to keep in mind before buying a steel building?: Here is a web search of the term steel building specification. It should give you some ideas and sources.

Q: i was giving this old knive. the knife part is stainless steel and has a couple rust spots but im not sure that the handle is (i think stainless) but it has this un smooth surface i dont think its rust because its not brown. would rubbing alcohol help clean it?: no if it was stainless it would have not rusted, we use lemon juice and a brillo pad

Q: How are steel coils processed and treated?: Steel coils are processed and treated through a series of steps. Initially, the steel is cleaned and pickled to remove any impurities. It is then passed through a series of rolling mills to reduce its thickness and increase its length. The coils are then annealed to improve their strength and ductility. Further treatments such as galvanizing or coating can be applied to enhance corrosion resistance or improve aesthetic appeal. Finally, the coils are cut and packaged according to customer specifications before being shipped for various applications in industries such as construction, automotive, and manufacturing.

Q: What are the different grades of steel used for coils?: The different grades of steel used for coils vary depending on the specific application and requirements. Some common grades include low carbon steel (C1008/1010), medium carbon steel (C1045), high carbon steel (C1070/1095), stainless steel (304/316), and advanced high-strength steels (AHSS) like dual-phase (DP), transformation-induced plasticity (TRIP), and martensitic (MS). Each grade offers different properties such as strength, corrosion resistance, formability, and weldability, allowing manufacturers to choose the most suitable grade for their coil production.

Q: I have a knife with AUS8 Stainless Steel. No idea what that means. I want to know some of the best stainless steels for knifes and all you can tell me about stainless steel would be great. I was browsing google and looking at grades and had no idea what all the numbers meant. Thanks!: I do engraving on knife blades (actually all kinds of metal but occasionally knife blades). Every company's blades are a little different. I get the idea that different companies have different compounds. All the materials are some compromise between hardness, toughness, corrosion resistance, machineability and other considerations. Stainless is generally not as good as a high-carbon steel, but high-carbon steel rusts and turns black. Stainless is much easier to keep clean.

Q: How does the steel coil market vary regionally?: The steel coil market varies regionally due to several factors such as the level of industrialization, economic development, and the specific demands and requirements of each region. In developed regions such as North America and Europe, the steel coil market is relatively mature and highly competitive. These regions have well-established manufacturing industries and infrastructure, which create a strong demand for steel coils for various applications such as automotive, construction, and machinery. The market in these regions is driven by factors like technological advancements, product innovation, and the need for high-quality materials. On the other hand, developing regions such as Asia-Pacific, Latin America, and Middle East & Africa experience rapid industrialization and urbanization, driving the demand for steel coils. These regions have growing construction sectors, booming automotive industries, and increasing infrastructure projects, which contribute to the rising demand for steel coils. Additionally, the availability of low-cost labor and raw materials in some of these regions makes them attractive for steel coil production. Furthermore, the regional variations in regulations and trade policies also impact the steel coil market. Tariffs, import/export restrictions, and government initiatives to promote domestic production can affect the market dynamics. For instance, protectionist measures like trade barriers or anti-dumping policies can limit the import of steel coils, leading to increased domestic production and regional market growth. Moreover, geographical factors and climate conditions can also influence regional steel coil markets. Coastal regions with high humidity levels and exposure to saltwater require specialized corrosion-resistant steel coils, while inland regions with extreme temperatures may demand coils with specific mechanical properties to withstand such conditions. Overall, the steel coil market varies regionally due to differences in industrialization, economic factors, specific demands, regulations, and geographical considerations. Understanding these variations is crucial for steel coil manufacturers, suppliers, and consumers to effectively navigate the market and capitalize on the opportunities available in each region.

Q: How are steel coils used in the manufacturing of springs?: Steel coils are used in the manufacturing of springs by being formed into a helical shape, allowing them to store and release energy when subjected to force or pressure.