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Cast Iron Brake Rotor, Auto Parts in China Foundry


Product Name:
Sand Casting Iron Auto Parts, S.G. Iron Brake Pad, Cast Iron Brake Shoes, CNC Machined Brake Rotor, Iron Casting Supplier

Materials of Brake Rotor:
Brakes are very important in the operation of any vehicle. A brake rotor is the large metal disc located behind the wheels of a vehicle. When the brake pedal is pressed down, a caliper presses the brake pads against the rotor. This friction is what causes the wheel to slow and the vehicle to come to a stop. This friction also creates heat that must escape from the braking system to maintain effective stopping power.

Brake rotors can be made from many different materials. Each material has its own effect on the performance of the rotor. Some brake rotors use different design methods, such as piercing the rotor in different patterns, for high-performance upgrades to vehicle braking systems. The ideal brake rotor is usable in any weather, no matter if it is rainy or sunny. It also has the capability to easily and quickly dissipate heat from the friction of the pads rubbing against its surface.

Brake Rotor Construction
The construction of a brake rotor plays a large part in how it performs. Different brake rotors use combinations of different materials and designs to modify their achievements, and their prices.

There are six different main types of materials used to make brake rotors. Each type has its own nuances, making it ideal for different applications.

Cast Iron
Cast iron is the material a standard brake rotor is made from. Many are made from a solid piece of metal. If used in high-performance situations, the part of the rotor that makes contact with the brake pads may heat too much and expand the entire rotor, which causes cracking and brake failure. An upgrade to this type of rotor is available which uses a cast iron outer ring and aluminum inner area, which allows for free expansion.

Steel rotors are made from a thin sheet of metal and are very lightweight. They have a high capacity for handling heat, but do not last long. They are commonly used on drag racing vehicles for reducing weight.

Layered Steel
Primarily used for racing, this type of rotor is made of several sheets of steel laminated together. Much of the warping that can be experienced with hard use can be eliminated by using layered steel over solid steel.

Brake rotors made from aluminum are lightweight but not very durable. They are able to dissipate heat quickly and easily, though they cannot absorb heat well. They are most commonly used in motorcycle braking systems.

High Carbon
This type of rotor mixes carbon and iron, which provides an increased ability to absorb and dissipate heat. Other metals, such as silicon, are often added as well to reduce vibration and noise on braking. High carbon rotors can withstand a large amount of stress without failing, making them perfect for use in high performance vehicles.

Composite Ceramic
Ceramic can absorb and dissipate heat easily, which makes it a great choice for brake rotors. The material is also very lightweight. The friction of the brake is hardly affected with the increase of heat, making these rotors the best choice for high-performance vehicles.

Material Grades:
Cast Iron, Gray Cast Iron, Ductile Cast Iron, S.G. Iron, Grey Iron

Gray Cast Iron
ISO185 100 150 200 250 300
ASTM A48 NO.20 NO.25 NO.30 NO.35 NO.40 NO.45
DIN1691 GG10 GG15 GG20 GG25 GG30
EN1561 EN-GJL-100 EN-GJL-150 EN-GJL-200 EN-GJL-250 EN-GJL-300
BS1452 100 150 200 250 300
AS1830 T150 T220 T260 T300

Ductile Cast Iron
ISO1083 400-15 400-18 450-10 500-7 600-3 700-2
ASTM A536 60-40-18 60-42-10 65-45-12 70-50-05 80-55-06 80-60-03 100-70-03
DIN1693 GGG40 GGG50 GGG60 GGG70
EN1563 EN-GJS-400-15 EN-GJS-400-18 EN-GJS-450-10 EN-GJS-500-7 EN-GJS-600-3 EN-GJS-700-2
BS2789 400/17 420/12 500/7 600/7 700/2
AS1831 300-17 400-12 500-7 600-3 700-2

Production Process:
Sand Casting, Automatic Molding, Machine Molding, Shell Molding, Green Sand Casting, Resin Sand Casting,

Cast Iron Foundry in China, Iron Casting Manufacturer, Iron Foundry, China Foundry

Dandong Foundry is producing cast iron and cast steel castings by various sand casting and precision casting processes, including Automatic Molding Line, Resin Sand Molding, Shell Molding, Manual Green Sand Cast Molding, Shell Molding, Lost Wax Investment Casting Process by water glass and silica sol materials.

We have complete quality inspection devices for Mechanical Testing and Chemical Analysis, including tensile strength, hardness, metallographic inspection, hardness, spectrometer, ultrasonic testing. ISO 9001 Certified. We can issue quality reports for all inspections.




Liaoning Borui Machinery Co., Ltd. All rights reserved.
Add: No.1-4-6, Jianshe Road, Qianyang, Donggang City, Dandong, Liaoning, China 
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