7B50 and
7150 aluminum alloys are Al-Zn-Mg-Cu series ultra-high strength and high toughness aluminum alloys, which correspond to the American grade
7050. 7B50, 7150 aluminum alloy has high specific strength, high toughness, excellent hardenability and good hot workability, good corrosion resistance, and has a certain tendency to stress corrosion, and its comprehensive mechanical properties are better than 7B04 aluminum alloy.
7B50 7150 aluminum plates are developed on the basis of Al-Zn-Mg alloy by adding Cu, and its strength is higher than that of 2××× series alloys. The yield strength of the alloy is close to the tensile strength, and the yield ratio is high. The strength is also very high, but the plasticity and high temperature strength are low, and it is particularly suitable for the production of large thick plates and forgings. It is widely used in transportation, aerospace and other industrial sectors.
7B50 7150 aluminum plates are a typical Al-Zn-Mg-Cu plus Zr highly alloyed 7000 series aluminum alloy. It is a modified alloy developed on the basis of the optimization of the main alloy composition of 7050. By adjusting the composition of the main alloy elements and making Fe, The number of Si and other impurity dispersed phases is reduced, which improves the toughness and anti-stripping corrosion resistance of the alloy.
7B50 7150 aluminum plates have the characteristics of high strength, high toughness and good hardenability.
7B50 7150 aluminum plates are currently mainly used in T7751 pre-stretched thick plate and T77511 extruded parts.
Chemical composition of
7B50 7150 aluminum plates:
Silicon Si: 0.12
Iron Fe: 0.15
Copper Cu: 1.80-2.60
Manganese Mn: 0.10
Magnesium Mg: 2.00-2.80
Chromium Cr: 0.04
Zinc Zn: 6.00-7.00
Titanium Ti: 0.10
Zirconium Zr: 0.08-0.16
Aluminum Al: balance
Others: Single: 0.10 Total: 0.15
Mechanical and physical properties of
7B50 7150 aluminum plates:
Tensile strength MPA 490
Yield strength MPA 420
Elongation% 8
Fatigue strength 76
Hardness HB 150
Conductivity at 20°C 40
20°C resistivity n.m 50
Modulus of elasticity 71
Density KG.m-3 2830
