Metallic material
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Metallic material
Innovation | Professionalism
Integrity | Efficiency
The roof panel is the outermost layer of the roof structure of a vehicle, typically made from automotive-grade steel. The roof panel serves as both a structural element of the vehicle and as protection for the vehicle’s occupants from external elements such as rain, wind, and debris.
The roof panel is typically formed using a stamping process, where a sheet of steel is pressed into shape using a series of dies. The process can involve several steps to achieve the final shape and size required for the vehicle.
Dual phase steel is a popular choice for automotive structural components because of its unique microstructure consisting primarily of ferrite and martensite. The martensite structure is distributed in the form of islands within the ferrite matrix. This steel exhibits excellent mechanical properties such as high work hardening index, bake hardening value, and low yield ratio.
| Grade | YS(MPa) | TS(MPa) | EL(%) | r | n | BH2(MPa) |
| HC300/500DPD+Z | 290-370 | ≥500 | ≥27% | – | ≥0.15 | – |
Grade: HC300/500DPD+Z
C(max): 0.15
Mn(max): 2.5
Si(max): 0.6
The front header beam, also known as the front header panel, is a structural component of the roof system of a vehicle. It is typically located at the front of the roof structure, just above the windshield, and connects the roof rails or pillars to the vehicle’s A-pillars.The front header beam plays a critical role in providing structural support and stability to the vehicle’s roof system. The front header beam is usually made from high-strength steel, which provides the necessary strength and durability to withstand the forces generated during a collision. In some cases, the front header beam may also incorporate other materials, such as aluminum or composite materials, to help reduce the overall weight of the vehicle.
The rear header beam, also known as the rear header panel, is a structural component of the roof system of a vehicle. It is typically located at the rear of the roof structure, just above the rear windshield, and connects the roof rails or pillars to the vehicle’s C-pillars.Similar to the front header beam, the rear header beam plays a critical role in providing structural support and stability to the vehicle’s roof system. The rear header beam is usually made from high-strength steel, which provides the necessary strength and durability to withstand the forces generated during a collision.
Dual phase steel is a popular material for automotive structural components due to its unique microstructure consisting of ferrite and martensite. The martensite structure is dispersed throughout the ferrite matrix in island-like formations. This steel exhibits a low yield ratio, high work hardening index, and bake hardening value, making it a preferred choice for automotive applications.
| Grade | YS(MPa) | TS(MPa) | EL(%) | r | n | BH2(MPa) |
| HC340/590DPD+Z | 290-370 | ≥500 | ≥27% | – | ≥0.15 | – |
Grade: HC340/590DPD+Z
C(max): 0.15
Mn(max): 2.5
Si(max): 0.6
Low carbon steel is strengthened by the addition of microalloying elements, either individually or in combination, such as niobium, titanium, and vanadium. These elements form carbonitride particles that help to precipitate and reinforce the steel. Additionally, the microalloying elements also aid in refining the grain structure of the steel, leading to even greater strength. This type of steel also exhibits good weldability and consists primarily of a ferrite structure with a small amount of carbide.
| Grade | YS(MPa) | TS(MPa) | EL(%) | r | n | BH2(MPa) |
| HC340LA | 340-420 | 410-510 | ≥21% | – | ≥0.12 | – |
Grade: HC340LA
C(max): 0.12
Mn(max): 1.5
Si(max): 0.5
Our company: Hengqiao(Shanghai) International Trading Limited
The company’s main business is general GMW standard, Fiat EFE standard, Volvo VDA standard, Nissan NEN standard, Volkswagen VW50065, Ford WSS-M and other standard series of automotive steel.
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