6061-T6 is called aviation hard aluminum, which is light, high strength, high production cost, so expensive. It is the abbreviation of T6 hardening treatment of 6061 aviation aluminum alloy, which has good formability, weldability, machinability and good formability. Moderate strength, maintains good workability after annealing. Typical Uses Aviation fixtures, trucks, tower construction, boats, pipelines and other architectural applications where strength, weldability and corrosion resistance are required. Chemical composition range: 0.4-0.8Si, 0.70 Femax, 0.15-0.40Cu, 0.15 Mnmax, 0.80-1.20Mg, 0.04-0.35Cr, 0.25 Znmax, 0.15 Timax, the maximum content of each other component is 0.05, the maximum total content of other components is 0.15, The remainder is Al.
The main alloying elements in 6061 alloy are magnesium and silicon, which have medium strength, good corrosion resistance, weldability, and good oxidation effect. It is widely used in various industrial structural parts that require certain strength and high corrosion resistance, such as the manufacture of trucks, tower buildings, ships, trams, railway vehicles, furniture, etc.

Al6061-T6 (Chemical Composition Limits wt%)
     Cu        Si    Fe     Mn     Mg    Zn        Cr     Ti   Pb.Bi       Al
0.15-0.4 0.4-0.8   0.7   0.15 0.8-1.2   0.25  0.04-0.35   0.15      /   cushion

 

Al6061-T6 Typical Mechanical & Physical Properties
      Weldability       Machinability      Erosion               Resisting Conductivity 20℃(68℉)       Density              (20℃)(g/cm3)
 Very good  Normal    Good 40-50          2.7
tensile strength (25°C MPa) Yield Strength (25°C MPa)  hardness rigidity Elongation 1.6 mm(1/16in)thick maximum shear stress MPa
310 276 95 12 205

 

The main alloying elements in 6063 alloy are magnesium and silicon. According to the analysis of relevant experts, it has excellent processing performance, excellent weldability, extrudability and electroplating, good corrosion resistance, toughness, easy to polish and color. The film, with excellent anodizing effect, is a typical extruded alloy. Alloy 6063 is widely used in building profiles, irrigation pipes, pipes, rods and profiles for vehicles, benches, furniture, elevators, fences, etc.

 

Al6063 (Chemical Composition Limits wt%)
     Cu        Si    Fe     Mn     Mg    Zn        Cr     Ti   Pb.Bi       Al
0.1 0.2-0.6   0.35   0.1 0.45-0.9   0.1       0.1    0.1      /   cushion

 

Al6063 Typical Mechanical & Physical Properties
      Weldability       Machinability      Erosion               Resisting Conductivity 20℃(68℉)       Density              (20℃)(g/cm3)
 Very good  Normal   Very Good 55-63          2.7
tensile strength (25°C MPa) Yield Strength (25°C MPa)  hardness rigidity Elongation 1.6 mm(1/16in)thick maximum shear stress MPa
185 145 60 12 115

 

 

7075-T6 has good plasticity after solution treatment, especially good heat treatment strengthening effect, high strength below 150 degrees, and particularly good low temperature strength, poor welding performance, and tendency to stress corrosion cracking. Double-stage aging can improve the resistance to scc performance. The main alloying element of 7075 is zinc, which has high strength, good mechanical properties and anodic reaction. It is mainly used in the manufacture of aircraft structures and other high-stress structural parts that require high strength and strong corrosion resistance, such as aircraft upper and lower wing panels, stringers, etc. After solution treatment, it has good plasticity, good heat treatment strengthening effect, good strength below 150 degrees, and particularly good low temperature strength, poor welding performance, and tendency to stress corrosion cracking. It is also widely used in mold processing, mechanical equipment, tooling and fixtures, etc.

 

Al7075-T6 (Chemical Composition Limits wt%)
     Cu        Si    Fe     Mn     Mg    Zn        Cr     Ti   Pb.Bi       Al
1.2-2.0 0.4   0.5   0.3 2.1-2.9   5.1-5.6       0.4    0.06      /   cushion

 

Al7075-T6 Typical Mechanical & Physical Properties
      Weldability       Machinability      Erosion               Resisting Conductivity 20℃(68℉)       Density              (20℃)(g/cm3)
 No good  Very good   Normal 40-50          2.85
tensile strength (25°C MPa) Yield Strength (25°C MPa)  hardness rigidity Elongation 1.6 mm(1/16in)thick maximum shear stress MPa
570 505 150 11 330