7020 T6 aluminium extruded flat bar

7020 T6 aluminium extruded flat bar belongs to medium and high strength Al-Zn-Mg alloy. It has high strength, good welding performance and process performance. It is the main welding structure material for aerospace vehicles and ground vehicles and equipment. It is widely used in manufacturing. The body of a high-speed train.
 
7020 T6 aluminium extruded flat bar
Thickness: 10~500mm
Width: 10~500mm
Length: ≤9000mm
 
 
7020 T6 aluminium extruded flat bar chemical composition
Aluminum Al (minimum): margin
　　 Silicon Si: ≤0.35
　　 Iron Fe: ≤0.40
　　 Copper Cu: ≤0.20
　　Manganese Mn: 0.05~0.50
　　 Magnesium Mg: 1.0~1.4
　　Chromium Cr: 0.10~0.35
　　Zinc Zn: 4.0~5.0
　　Zirconium Zr: 0.08~0.20
　　Zirconium+Titanium Zr+Ti: 0.08~0.25
　　 Titanium Ti:-
　　 Other elements not specified: each type: ≤0.05; total: ≤0.15
 
7020 T6 aluminium extruded flat bar has high strength, fracture toughness, and strong corrosion resistance. It is mainly used in the field of rail transportation. After solution treatment, it has good plasticity and good heat treatment strengthening effect. Compared with the old production line, the new production line realizes automatic control of the whole process of melting and casting, removes artificial uncertain factors, can realize low-level casting and higher casting crystallization speed, and reduce the thickness of surface segregation layer; internal structure and mechanical properties Even and continuous.