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Cold Rolled Steel Coil
Thickness Range: 0.15mm - 3.0mm
Width Range: 600mm - 1550mm
Surface Treatment: Oiled, Un-oiled, or Phosphated
Edge Condition: Mill Edge or Slit Edge
Shanghai Metal Corporation is a leading Cold Rolled Steel Coil manufacturer and supplier.
Cold Rolled Steel Coil is a flat-rolled steel product produced by further processing hot-rolled pickled coils at room temperature. This cold reduction process results in a product with superior dimensional accuracy, a smoother surface finish, and enhanced mechanical properties compared to hot-rolled steel. It is the foundational material for applications requiring precise forming, welding, or painting, such as automotive body panels, home appliance housings, and steel furniture. The primary value it offers is providing a high-quality, consistent substrate that ensures better performance in subsequent manufacturing processes and a superior final appearance.
If you want to know more about our Steel products or Cold Rolled Steel Coil price please feel free to contact us, we will reply you within 24 hours.
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1. Material Grades: Common grades include DC01 and SAE 1010, selected based on the required formability.
2. Surface Finish: Available in Matte (standard for painting), Bright (smooth and reflective), and Dull finishes to meet different application needs.
3. Dimensional Tolerance: Produced with tight thickness and width tolerances to ensure consistency.
4. Mechanical Properties: The cold rolling process increases strength and hardness to balance strength and ductility.
5. Flatness: Offers superior flatness compared to hot-rolled steel, which is critical for precision laser cutting and stamping operations.
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1. Superior Surface Quality
The smooth, clean, and scale-free surface reduces the need for extensive pre-treatment before painting or coating, saving time and cost.
2. Excellent Dimensional Accuracy
Precise thickness and width tolerances are vital for automated production lines, ensuring parts fit together correctly and minimizing scrap.
3. Enhanced Strength
The work hardening from cold reduction increases the material's strength, allowing for the design of lighter yet stronger components.
4. Good Formability
When supplied in annealed tempers, the steel offers excellent ductility, enabling manufacturers to create complex shapes for automotive parts and appliance shells in a single.
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1. Automotive Body Panels
Ideal for manufacturing doors, hoods, and other structural parts due to its good formability and smooth surface, which is perfect for a high-quality paint finish.
2. Home Appliance Housings
The primary material for refrigerator, washing machine, and oven shells. Its excellent surface provides a perfect base for powder coating, and its formability allows for seamless designs.
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Production process of Cold Rolled Steel Coil:
Chemical Components:
|
Grade |
Chemical Components |
||||
|
c |
Mn |
P |
S |
Alt |
|
|
SPCC |
≤0.12 |
≤0.50 |
≤0.035 |
≤0.025 |
≥0.020 |
|
SPCD |
≤0.10 |
≤0.45 |
≤0.030 |
≤0.025 |
≥0.020 |
|
SPCE |
≤0.08 |
≤0.40 |
≤0.025 |
≤0.020 |
≥0.020 |
Mechanical Properties:
|
Grade |
Strength |
||||
|
YS |
TS |
Elongation(%) |
|||
|
MPA |
δ |
S |
P |
||
|
SPCC DC01 |
130-260 |
270-410 |
28 |
|
|
|
SPCD DC03 |
120-240 |
270-390 |
34 |
|
|
|
SPCE SPCEN |
<210 |
270-370 |
38 |
|
|
|
DC04 DC05 |
<210 |
270-370 |
38 |
|
|
|
AISI1006 |
275-365 |
275-380 |
34 |
32 |
30 |
|
AISI 1008 |
275-390 |
275-410 |
32 |
30 |
28 |
|
AISI 1010 |
295-410 |
295-430 |
30 |
29 |
28 |
|
AISI 1020 |
355-490 |
355-500 |
26 |
25 |
24 |
|
AISI 1045 |
|
530-685 |
|
|
16 |
|
AISI 1050 |
|
540-715 |
|
|
14 |
|
AISI 1060 |
|
550-775 |
|
|
12 |
|
ST33 S185JR |
185-195 |
315-430 |
33 |
|
|
|
ST37 S235JR |
215-235 |
375-500 |
25 |
|
|
|
ST37 S355JR |
275-325 |
510-680 |
18 |
|
|
Thickness Tolerance:
|
Thickness (mm) |
Tolerance allowed(min) |
|
0.20-0.50 |
+/-0.05 |
|
0.50-0.65 |
+/-0.06 |
|
0.65-0.90 |
+/-0.07 |
|
0.90-1.00 |
+/-0.09 |
|
1.10-1.20 |
+/-0.10 |
|
1.20-1.40 |
+/-0.12 |
|
1.40-1.50 |
+/-0.13 |
|
1.50-1.80 |
+/-0.14 |
|
1.80-2.00 |
+/-0.15 |
|
2.50-3.00 |
+/-0.20 |
Width Tolerance:
|
Width(mm) |
Tolerance allowed (mm) |
|
≤200 |
+2.0/-1.0 |
|
>200-300 |
+2.5/-1.0 |
|
300-400 |
+3.0/-2.0 |
|
400-600 |
+3.5/-2.5 |
|
600-1000 |
+6/-0 |
|
>1000 |
+10/-0 |
Reference list of supply standards and steel grades as well as those equivalent or close to them:
|
Standard No. |
Q/BQB 418-2003 |
JFS A2001-1998 |
Q/BQB 418-1999 |
|
Steel Grade |
B340/590DP |
JSC590Y |
B340VK |
|
B400/780DP |
JSC780Y |
B400VK |
Mechanical performances:
|
Steel Grade |
Yield Strength |
Tensile |
Elongation(Lo=50mm) |
180°Bending Test |
||
|
Nominal Thickness mm |
||||||
|
0.60~<1.0 |
1.0~<1.6 |
1.6 |
Bending Center Diameter |
|||
|
B340/590DP |
340-500 |
590 |
16 |
18 |
20 |
0.5a |
|
B400/780DP |
400-590 |
780 |
- |
14 |
16 |
1.0a |
Surface quality:
|
Grade |
Code No |
Features |
|
Relatively high-grade finishing surface |
FB(O3) |
It is allowed for the existence of a few surface defects which will not affect forming and coating & plating adhesiveness such as minor scratch, impression, pit, roll mark and oxidation tint. |
|
High-grade finishing surface |
FC(O4) |
One side of relatively good quality is free from any remarkable defect visible and the other side must reach FB requirements at least. |
Standard Packaging
For Cold Rolled Steel Coil products, we implement strict anti-rust and moisture-proof packaging standards. Each coil is wrapped with VCI (Volatile Corrosion Inhibitor) anti-rust paper and a layer of waterproof PE film. Plastic or steel end caps are fitted to protect the coil eyes and inner diameter (ID). The standard coil ID is 508mm or 610mm, with an outer diameter (OD) typically ranging from 1000mm to 1800mm. Each coil, weighing from 3 to 10 MT, is secured with a minimum of three steel straps. Coils are then loaded onto fumigated wooden pallets or steel cradles for stability. The loading orientation can be eye-to-sky or eye-to-wall, based on customer requirements and shipping conditions.
Shipping
We support FCL and LCL sea freight, with break-bulk shipping available for oversized orders. A standard 20' GP container can load approximately 18–25 MT, while a 40' GP container can load 22–28 MT, subject to port and road weight limits. We accept trade terms including EXW, FOB, CIF, and CFR. Shipping costs are calculated based on cargo volume, gross weight, destination port, and the selected transportation method. We provide a full set of shipping documents, including the Commercial Invoice, Packing List, Bill of Lading, Mill Test Certificate (MTC), and Certificate of Origin.
Lead Time
Samples: 3-7 working days
Standard orders: 15-25 working days
Customized orders: 25-40 working days
Q: What is the difference between Cold Rolled and Hot Rolled steel?
A: The main difference is the processing temperature. Hot rolling is done above the steel's recrystallization temperature, resulting in scaled surfaces and less precise dimensions. Cold rolling is done at room temperature, which produces a smoother surface, tighter dimensional tolerances, and increased strength, making it better for precise applications.
Q: What information do you need to provide a quotation?
A: To give an accurate quote, please provide the material grade (e.g., DC01, SAE 1010), dimensions (thickness, width, length), surface finish (e.g., matte, bright), temper (e.g., annealed, full hard), and the total quantity required.
Q: Can you provide custom cut-to-length sheets?
A: Yes, we offer cut-to-length services. You can specify the exact length and width you need, and we will process the coils accordingly to reduce your production waste and handling costs.
Q: What is the typical surface treatment for painting?
A: For painting applications, a chemically treated or phosphated surface is often recommended as it provides excellent paint adhesion and corrosion resistance. A standard oiled, matte finish is also suitable for many general painting purposes after proper cleaning.
Q: What factors should I consider when choosing a grade?
A: The primary factor is the complexity of the forming process. For simple bending, a commercial quality like DC01 is sufficient. For deep drawing or complex shapes (like automotive panels or sinks), a drawing quality grade like DC03 or DC04 with higher ductility is necessary to prevent cracking.
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