Metallic material
Innovation | Professionalism
Integrity | Efficiency
Metallic material
Innovation | Professionalism
Integrity | Efficiency
The headrest frame is the structure used to support the headrest on the car seat, usually made of metal materials. It mainly consists of two parts: the headrest support rod and the headrest support plate. The headrest support rod is fixed on the frame of the seat back, and the headrest support plate is connected with the headrest.
Dual phase steel is a favored material for automotive structural components due to its low yield ratio, high work hardening index, and bake hardening value. Its microstructure primarily consists of ferrite and martensite, where the martensite structure exists in the form of small is dispersed throughout the ferrite matrix.
| Grade | YS(MPa) | TS(MPa) | EL(%) | r | n | BH2(MPa) |
| HC550/980DP | 550-720 | ≥980 | ≥9% | – | – | – |
Grade: HC550/980DP
C(max): 0.23
Mn(max): 3
Si(max): 1
Quench & Partitioning (Q&P) steel contains martensite, as well as a proportion of ferrite and approximately 8%-12% retained austenite. The presence of retained austenite enables the transformation-induced plasticity effect during deformation, leading to superior work hardening performance and elongation compared to high-strength steel of equivalent strength. As a result, Quench & Partitioning (Q&P) steelexhibits better formability and plasticity.
| Grade | YS(MPa) | TS(MPa) | EL(%) | r | n | BH2(MPa) |
| HC600/980QP | 600-850 | ≥980 | ≥15% | – | – | – |
Grade: HC600/980QP
C(max): 0.25
Mn(max): 3
Si(max): 2.5
The combination of low yield ratio, high work hardening index, and bake hardening value make dual phase steel a popular choice for structural components in the automotive industry. Its microstructure is mainly comprised of ferrite and martensite, with the latter existing as islands dispersed throughout the ferrite matrix.
| Grade | YS(MPa) | TS(MPa) | EL(%) | r | n | BH2(MPa) |
| HC550/980DP | 550-720 | ≥980 | ≥9% | – | – | – |
Grade: HC550/980DP
C(max): 0.23
Mn(max): 3
Si(max): 1
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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