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It is a high-strength heat-treatable alloy with extremely high strength and resistance to spalling corrosion and stress-corrosion fracture.

  Specifications: Thickness 5-250mm Width: 1200-1600mm Length: 3670

Typical use

Aircraft structural parts, plates, extrusions, hand forging or die forgings.

Chemical composition range

2.0-2.6Cu, 1.9-2.6Mg, 0.10Mnmax, 0.12Simax, 0.15Femax, 0.04Crmax, 0.08-0.15Zr, 5.7-6.7Zn, 0.06Timax, The maximum content of each other component is 0.05, the maximum total content of other components is 0.15, and the balance is Al.

Typical mechanical properties

State

Tensile Strength

Yield Strength

Elongation

Hardness (a)

Shear strength

Fatigue strength (b)

MPa

ksi

MPa

ksi

Sample thickness          1.6mm(1/16in)

HB

MPa

ksi

MPa

ksi

T73510

496

72

434

63

12

135

-

-

71

10.4

T7451

524

76

469

68

11

135

303

44

71

10.4

T7651

552

80

490

71

11

135

324

47

71

10.4

Other properties

Density: 2.83g/cm3 (0.102lb/in3) at 20°C (68°F).

Annealing temperature 415°C (775°F)

Solid solution temperature 475℃ (890℉)

Aging temperature 120-175℃ (250-350℉)