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: What are the challenges in coil recoiling for high-strength steel?: One of the main challenges in coil recoiling for high-strength steel is the control and management of residual stresses. High-strength steel has a tendency to retain significant levels of residual stresses, which can lead to coil distortion or springback during recoiling. This requires careful process optimization and control to minimize these effects. Additionally, the high strength of the steel can make it more susceptible to cracking or damage during recoiling, necessitating precise handling techniques and equipment. Overall, the challenges lie in achieving uniform coil geometry, minimizing residual stresses, and avoiding any potential damage to the high-strength steel during the recoiling process.

Q: I've created something but it's a huge secret. Anyways I need to know everything and anything about steel. Like the iron steel. ANYTHING AND EVERYTHING. Best answer goes to the person with the most correct information. Please this is really important.: If you want to know everything about steel, there's no way you're going to get an answer on Yahoo that is comprehensive enough. What you want to do is get some books on steel metallurgy, engineering properties of materials, and maybe machine design depending on your application. Topics will include molecular structure, material properties, alloying, stress and strain, work hardening, creep, computing damage and lifetime cycles, corrosion, toughness vs hardness, heat treating, and a ton of others. If you want to sharpen steel, that is a whole topic in itself concerning different blade profiles and their sharpness, edge holding, ease of sharpening, type of grind etc.

Q: Why is iron used to create steel? Why not other elements?: iron came before steel. iron is what was discovered that, under certain circumstances, became a stronger metal: steel. that is why. its like asking why copper is in bronze. because what we call bronze, is an alloy of copper and tin. if you give a more detailed question, i may be able to give a more detailed answer.

Q: Can steel coils be used in the manufacturing of machinery and equipment?: Yes, steel coils can be used in the manufacturing of machinery and equipment. Steel coils have high strength and durability, making them suitable for various applications in the machinery and equipment industry. They can be shaped, cut, and formed into various components, such as frames, shafts, gears, and structural parts, to meet the specific requirements of different machinery and equipment. Additionally, steel coils can be further processed and treated to enhance their properties, such as through heat treatment or surface coatings, to improve their performance and longevity in the manufacturing process.

Q: How are steel coils processed for edge conditioning or slitting?: Steel coils are processed for edge conditioning or slitting through a series of steps. First, the coil is unwound and flattened to remove any bends or curls. Then, the edges of the coil are trimmed or conditioned to ensure a smooth and straight edge. After that, the coil is slit into narrower strips using specialized machinery. This process allows for the production of various widths of steel strips, which can be used for different applications.

Q: Yes, I understand it can weaken steel greatly. But can it MELT steel? (key word: melt): The okorder /.. A flame from a wick burning kerosene demonstrates incomplete burning, hence sooty, yellow and a lower temperature flame like a candle. Kerosene in a cup or puddle only burns while it is hot enough to give off vapor. The vapor is all that is burning. It is not very hot, as it is not the right mixture with air. It may not even give off enough heat to keep the kerosene itself hot enough to keep burning. A kero blow torch flame might be typically 1100-1300°C but parts can reach 1760°C or more in some cases.

Q: Can steel coils be rewound?: Yes, steel coils can be rewound.

Q: What are the advantages of using steel coils?: There are several advantages of using steel coils. Firstly, steel coils are highly durable and have a longer lifespan compared to other materials, making them ideal for long-term use. Additionally, steel coils have excellent strength-to-weight ratio, allowing them to withstand heavy loads without compromising structural integrity. They also provide superior resistance to corrosion, making them suitable for various environments, including high humidity or coastal areas. Furthermore, steel coils can be easily recycled, making them an environmentally friendly choice. Overall, the advantages of using steel coils include durability, strength, corrosion resistance, and sustainability.

Q: Can one assume that stainless steel that can be hardened is magnetic?: Most of the 300 series stainless metals are not magnetic, but if it is cast, it is magnetic. Welds are considered casting, so the welds are magnetic even though the items that are welded together are not. The 400 series stainless may have a few types that are magnetic. I suppose generally the hardenable factor has a bearing if you consider that 400 series can be hardened more readily than the 300 series. Source: Working in metal fabrication shops.

Q: Steel, Sturm, and Kitiara are in a series called the Dragonlance Chronicles.: Steel Brightblade was conceived when Kitiara and Sturm traveled together five years prior to the War of the Lance. Steel was then born at a woman named Sara Dunstan's house outside Palanthas. Kitiara let Sara raise him and when Sturm died Sara and Steel moved into the city of Palanthas. It's better explained in Second Generation by Margaret Weis and Tracy Hickman. Oh and I don't think the series is over commercialized I think that they could have done more with the original characters and the new characters. I'm also looking forward to the movie when it comes out next Autumn.

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