7A09 Aluminum Bars

7A09 Aluminum Bars Specifications

Standards: ASTM B221, B211, B565, B316 3003, DIN AlMnCu

Aluminum bar form: Aluminum round, hexagonal, flat, semi-circular, oval, rectangular black, and glossy finish

Aluminum round bar diameter: 0.1-600mm, etc.

Aluminum hexagonal bar: 0.1-600mm, etc.

Aluminum angle bar size: 0.5mm*40mm*40mm-20mm*400mm*400mm

Aluminum flat steel thickness: 0.1-600mm, etc.

Aluminum flat bar size: 1-2500mm, etc.

Aluminum round bar length: 1-12m, random, fixed, and cut length or according to customer requirements

Product Introduction

Aviation super duralumin alloy, high strength, good wear resistance

7A09 belongs to the Al-Zn-Mg-Cu series of super-duralumin, which is an ultra-high-strength deformed aluminum alloy that has been applied to the aircraft manufacturing industry since the late 1940s and is still widely used in the aviation industry. It is characterized by good plasticity after solid solution treatment, especially good heat treatment strengthening effect, high strength below 150 ° C, and particularly good low temperature strength; Poor welding performance; Stress corrosion cracking tendency; Requires aluminium or other protective treatment. The two-stage aging effect improves the resistance of the alloy to stress corrosion cracking. The plasticity in the annealed and rigidly quenched state is slightly lower than that of 2A12 in the same state.

Typical uses

7A09 is mainly used for the manufacture of aircraft structures and other high stress structural parts with high strength and corrosion resistance, such as aircraft, lower wing wall panels, trusses, etc. Good plasticity after solid solution treatment, good heat treatment strengthening effect, good strength below 150 degrees, and particularly good low temperature strength, poor welding performance, stress corrosion cracking tendency. It is also widely used in mold processing, machinery and equipment, tooling fixtures, aerospace industry, blow molding (bottle) mold, ultrasonic plastic welding mold, golf head, shoe mold, paper mold, foam molding mold, wax removal mold, mechanical equipment, used to make high-end aluminum alloy bicycle frame. In 2014, it will be used for the first time as the body material of the smartphone OPPO N3.

Chemical composition

Alloy grade

other

New grade

Old grade

0.50

1.2-2.0

0.15

2.0-3.0

0.16-0.30

5.1-6.1

0.10

——

each

total

7A09

LC9

0.05

0.15

Allowance

Mechanical properties

Aluminum alloy grade and	tensile strength Rm/Mpa	Yield strength Rp0.2/Mpa	Elongation/%	hardness/ HBWα
7A09-T6	490	410	7	150

Physical properties

Aluminum alloy grade and state	Coefficient of thermal expansion (20-100℃) μm/m·k	Melting point range (℃)	electrical conductivity 20℃(68℉) (%IACS)	Resistivity20℃(68℉) Ωmm2/m	density (20℃)(g/cm3)
7A09-T6	23.6	475-635	33	0.0515	2.9

Quality characteristics

Density: 2.90g/cm³.

Shear strength: alloy (bare) and aluminum-clad alloy, O state: 152MPa (22ksi); Alloy (bare) T6, T7451 Status: 331MPa (48ksi); Aluminum alloy T6, T7451 Status: 317MPa (46ksi)

Hardness: O state: 60HB; T6, T651 Status: 150HB;