Cold Rolled Steel Coil

Cold rolled steel coil (CR coil) is essentially hot-rolled steel that is cooled at room temperature and then annealed and temper rolled. This process will produce steel coil with tighter dimensional tolerances and better surface finishes. Item: Colo Rolled Steel Coil Strip: 7 mm-850 mm (can be customized) Thickness: 0.2 mm-4 mm Width: 600 mm-2,000 mm

Types :Cold Rolled Steel Coil

Thickness :0.2 mm-4 mm

Width :600 mm-2,000 mm

Coil Weight:3-5 tons

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Introduction

Cold rolled steel coil and sheet are widely used as basic materials in many applications, such as automobiles, electric appliances, furniture, etc. It is rolled at room temperature, below its recrystallization temperature, which will increase the steel strength and hardness, and also make its surface smooth. As a leading cold rolled steel coil manufacturer, Gnee Steel develops and offers a wide range of steel products with different sizes, finishes, designs to meet our customers’ needs. Welcome to talk with us about your project.

Specifications of Cold Rolled Coil

Item	Colo Rolled Steel Coil
Thickness	0.2 mm-4 mm
Width	600 mm-2,000 mm
Length (CR Sheet)	1,200 – 6,000 mm
Coil Weight	3-5 tons (can be customized)
Grades	Q195A-Q235A, Q195AF-Q235AF, Q295A(B)-Q345 A(B); SPCC, SPCD, SPCE, ST12-15; DC01-06
MOQ	5 tons
Delivery Time	7-30 days (mainly depends on the order quantity)
Processing Service	Bending, Cutting, Slitting, Punching, etc.
Tolerance	±1%
Package	Standard Export Package

Technical Data

Chemical Composition

Grade	C	Mn	P	S	Alta
DC01, SPCC	≤0.12	≤0.60	≤0.045	≤0.045	≥0.020
DC02, SPCD	≤0.10	≤0.45	≤0.035	≤0.035	≥0.020
DC03, SPCE	≤0.08	≤0.40	≤0.030	≤0.030	≥0.020
DC04, SPCF	≤0.06	≤0.35	≤0.025	≤0.025	≥0.015

Mechanical Properties

Grade	RCL(Mpa)	RM(MPa)	A80mm(%)	R90	N90
DC01	140~280	270~410	≥28
DC02	140~240	270~370	≥34	≥1.4
DC03	120~210	270~350	≥38	≥1.8	≥0.18
DC04	120~180	270~330	≥40	≥2.0	≥0.20
SPCC	130~300	270~410
SPCD	120~240	270~370		≥1.3
SPCE	120~210	270~350		≥1.8

Features of Cold Rolled Coil

1. High strength: 20% stronger than hot rolled steel
2. High surface quality – smooth and easy to paint
3. Close tolerances
4. Good formability

The cold-rolled steel coil is commonly used for applications that require close tolerances, high strength, and high surface finish quality. It is also the base metal of galvanized steel coil. Here are its applications:

1. Furniture
2. Automobile components
3. Home appliances
4. Electronics Hardware
5. Construction uses

What Is CR Coil?

Cold rolled steel coil (CR coil) is essentially hot-rolled steel that is cooled at room temperature and then annealed and temper rolled. This process will produce steel coil with tighter dimensional tolerances and better surface finishes. Since the cold work hardening is caused by continuous cold deformation, it increases the strength and hardness of rolled hard coils and decreases the toughness index, they can only be used for simply deformed parts.

SPCC Steel

SPCC steel is a commercial grade of cold-rolled steel defined by Japanese manufacturing standard JIS G 3141. It is equivalent to China grade Q195 and Q215A. While SPHC steel is a commercial quality hot rolled steel. Below are its mechanical properties.

Tensile strength is at least 270 N/mm2(MPa); while yield strength is ≤240 N/mm2(MPa).

Cold Rolled Steel Coil Manufacturing Process

The production process of cold rolled coils varies slightly according to the raw materials and the varieties and specifications of the products. Here is the making process of cold rolled steel.

Raw Material (Hot rolled steel)- Pickling – Cold Rolling – Degreasing – Annealing – Rolling up – Packaging

1. Pickling. Hot-rolled coils pass through a pickling line to remove oxide scale on the surface by using hydrochloric acid solutions. Through the pickling process, there will be fewer surface flaws left.
2. Cold rolling. Pickled coils are rolled to a specified thickness in the cold-rolled mill.
3. Annealing. After removing the lubricant oil and contaminants by electrolytic cleaning, the coil will go through the continuous annealing process. It aims to make steel products with high tensile strength.
4. Rolling up into coils and then packaging for sale.

Cold Rolled Steel Coil Suppliers

There are many cold rolled steel coil suppliers all over the world. Please make sure to choose a reputable one, for example, Gnee Steel. As a leading steel products manufacturers in China, we have our own factory in Henan Province. We develop a professional team to produce CR steel coil with precise dimensions, beautiful surfaces, and good mechanical properties. Besides, there is a strict quality control system. You can come to check your coils on site. Also, the third-party inspection is acceptable. More than that, we have a full-service system. If you have any problem when receiving goods, please feel free to contact us. We will get back to you in 12 hours. Wanzhi Steel also offers great discounts for bulk orders. Welcome to contact us for the latest price.

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