Gmw3399 Cr780t450y-Tr General Standard Automotive Body Steels Cold Rolled Duplex Steel

Min.Order: 1

Product origin: Shanghai, China

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US$ 860 ~ 957

Description

Cold rolled steel
Cold-rolled steel is steel produced by cold rolling. Cold rolling is a steel plate obtained by further rolling the No. 1 steel plate to a target thickness at room temperature. Compared with hot-rolled steel sheets, cold-rolled steel sheets have more accurate thickness, smooth and beautiful surface, and also have various superior mechanical properties, especially in terms of processing performance. Because cold-rolled raw coils are relatively brittle and hard, they are not suitable for processing, so usually cold-rolled steel sheets are required to be annealed, pickled and surface-leveled before being delivered to customers. The maximum thickness of cold rolling is below 0.1--8.0MM. For example, the thickness of cold-rolled steel sheets in most factories is below 4.5MM; the minimum thickness and width are determined according to the equipment capacity of each factory and market demand.

Introduction
The difference between cold-rolled steel and hot-rolled steel is not in the smelting process, but in the rolling temperature, or the termination temperature of rolling. The finish rolling temperature lower than the recrystallization temperature of the steel becomes cold rolled steel. Hot-rolled steel is easy to roll and has high rolling efficiency, but the steel is oxidized under hot-rolled conditions, and the surface of the product is black and gray. Cold-rolled steel requires high mill power and low rolling efficiency, and intermediate annealing is required to eliminate work hardening during the rolling process, so the cost is also high, but cold-rolled steel has a bright surface and good quality, and can be directly used for processing Finished products, so cold-rolled steel sheets are widely used.

Convex hull defect
Cold-rolled strip steel is a strip-shaped thin steel made by cold extrusion (without heating, otherwise called hot rolling). It is a material that rolls steel into the shape we want through cold water. It uses a machine to squeeze the unshaped material into a strip-shaped very thin steel by extrusion under very cold conditions, and then passes through various A form of processing, and then through cold treatment to make the coils we need, including coils, tapes, and wires. Cold-rolled steel coils also directly refer to cold-rolled strips as cold-rolled coils. In terms of steel processing, in terms of cold processing, there is a very serious problem with convex hull defects in cold-rolled steel coils.
Solucky steel Limited is a third-party supply chain service enterprise focusing on materials for automobiles, high-end household appliances, as well as material processing and storage. Its headquarters and warehouse base are set up in Shanghai BaoShan, and has branches all over the country, 20+ subsidiary companies,including Foshan, Guangdong, Chongqing, Wuxi, etcz.

Table of chemical properties and mechanical properties

The material	GMW3399 CR780T/450Y-TR
Chemical composition	C%	Mn%	Al%	Si%	P%	S%	Cu%	B%
	≤0.30	≤2.5	0.015-2.00	≤2.2	≤0.090	≤0.015	≤0.20	≤0.006
Mechanical property	YS	TS(MPa)	EL(%)	n
	450-570	≥780	≥21

Main Products

Product Application

Machines & Processing

Packing & Delivery & logistics

Why Choose Us

FAQ
1.Where is your factory?
Our head office and warehouse located in Shanghai--the biggest steel making center of China

2.How long is your delivery time?
Generally it is 5-10 days if the goods are in stock. or it is 15-30 days if the goods are not in stock, it is according to quantity.

3.What about the MOQ?
MOQ only 200KG,include coils and sheets

4. How long is your lead time?
In general, our delivery time is within 7-15 days, and may be longer if the quantity is extremely large or special circumstances occur.

5.How's your product quality?
We only sell mid to high end steel materials,100% quality guarantee and cost-effective.
6.What are your terms of payment?
You can make the payment to our bank account,T/T, 30% deposit in advance, 70% balance against the copy of B/L.

7.How many countries you already exported to?
We have exported to America, Canada, Brazil, Chile, Colombia, Russia, Ukraine, Thailand, Myanmar, Vietnam, India, Kenya, Ghana,somalia and other African countries.Our export experience is rich, we familiar with different market demands, can help customers avoid a lot of trouble.

8.What are the certifications for your products?
We have ISO 9001, MTC, third parties' inspections are all available such SGS, BV ect.

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