What material is the mounting bracket and support bracket for the car made of?
The materials of automotive mounting brackets (or support brackets) vary depending on the specific application, installation location, and functional requirements. According to current publicly available information, the common materials mainly include the following categories:
Common material types
Metal types
High-strength steel: Low cost, strong impact resistance, but heavy and prone to rust, often used in structural components such as bumper brackets .
Stainless steel / carbon steel: High strength, good corrosion resistance, suitable for engine brackets, lithium battery fixing brackets, etc. with high load requirements .
Aluminum alloy: Lightweight, corrosion-resistant, moderate strength, widely used in headlight brackets, modification brackets, CX7 type brackets, etc. .
Plastic / composite material types
Engineering plastics (such as long glass fiber reinforced polypropylene): Light weight, flexible shape, but poor heat resistance (usually not exceeding 120°C), often used in rear bumper brackets, interior brackets .
ABS plastic: Low cost, easy to process, often used in air outlet brackets, vehicle-mounted equipment brackets .
PC/ASA alloy: Excellent weather resistance, UV resistance and impact resistance, suitable for exposed brackets such as roof luggage racks .
Flame-retardant PCABS alloy: Satisfies high flame retardancy (1.5mm V0), high strength and low-temperature resistance requirements, used for fixed brackets for new energy lithium batteries .
Composite materials
Carbon fiber composite materials: High strength, light weight, corrosion resistance, but high cost, difficult to process, relatively less used .
LFTPP (long glass fiber reinforced thermoplastic polypropylene): Developed by South Korea, lighter than steel by 40%, collision energy absorption rate increased by 25%, a trend in the future .
Material selection considerations
Functional requirements: For shock absorption, a rubber-metal composite structure is needed ; for lightweighting, aluminum alloy or composite materials are selected .
Environmental conditions: Exposed components need to be resistant to weather (such as ASA, PC/ASA); in high-temperature areas, they need to be resistant to heat (avoiding ordinary plastics).
Cost and process: Plastic parts are suitable for large-scale injection molding, while metal parts are more suitable for high-stress scenarios .
Recommendations: If it is an original factory part, priority should be given to the specified material by the original factory; if it is a modification or replacement part, avoid inferior plastics and prefer metals or high-quality composite materials to ensure safety and durability .
“Automotive mounting brackets” or “support brackets” have different meanings in different contexts. According to current publicly available information, they are mainly divided into the following two categories:
Roof / exterior installation brackets (such as roof luggage racks)
These brackets are installed on the vehicle exterior and are mainly used to expand the loading capacity:
Increase loading space: Can install luggage compartments, sports equipment (such as bicycles, snowboards, surfboards) or roof tents to avoid occupying the interior space .
Support outdoor expansion: Some brackets support quick-release design, making it convenient for loading and unloading; additional LED lights, radio antennas, solar panels, etc. can also be installed .
Precautions:
The load capacity is generally 50–100 kilograms, and it is recommended to refer to the vehicle manual;
Long-term use may increase wind resistance, resulting in a slight increase in fuel consumption;
Regularly check if the fixing parts are loose .
Interior installation brackets (such as vehicle-mounted phone brackets)
These brackets are installed in the vehicle interior and are used to fix mobile devices:
Enhance driving safety and convenience: Fix mobile phones, GPS, etc., to facilitate navigation viewing and phone calls without holding .
Common types:
Suction type (dashboard / front windshield)
Outlet clip type Suction-type
Adhesive or gravity-sensing type
Design features: Supports multi-angle adjustment, compatible with various device sizes, and is included as an original configuration in some high-end models.
Engine support frame (mechanical component)
This is a key component of the vehicle's power system and functions as follows:
Fixes the position of the engine: Prevents the engine from moving during acceleration, braking, or jolts.
Shock absorption and noise reduction: Absorbs engine vibrations through rubber or hydraulic components to enhance ride comfort.
Transmitting and balancing torque: Transmits the engine's torque smoothly to the frame to avoid localized stress concentration.
Fault manifestations: If damaged, it may cause intensified idle vibration, abnormal noise during acceleration, or body resonance.
In summary, the specific functions of "vehicle mounting bracket support bracket" depend on its installation position and purpose. If referring to the roof bracket, it focuses on expanding cargo capacity; if referring to the vehicle-mounted bracket, it focuses on fixing equipment; if referring to the engine support frame, it focuses on stability and shock absorption.
If you want to know more, keep reading the other articles on this site!
Please call us if you need such products.
Zhuo Meng Shanghai Auto Co., Ltd. is committed to selling MG&MAXUS auto parts welcome to buy.
