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aluminium extrusion profile for automotive

aluminum profile for automotive body structure
Extruded aluminum materials used in automobile manufacturing have profiles, pipes and bars. The sections and pipes are used more, the amount of rod used is very small, and it is used for cutting and cutting some small parts. With the rapid development of China's auto industry and the rapid development of vehicle lightweight, the average annual growth rate of automobile extrusion aluminum consumption is estimated to reach 15% or more in the next 10 years.

aluminium profile 6063

aluminum profile 6063

6063-t5 aluminum profile
 
The extruded aluminum 90% is made of 6 series alloy, with less 3 series, 5 series and 7 series alloy. In the form of extruded profiles and pipes, it is used in the manufacture of automotive parts.

6061 aluminum profiles

aluminium profile 6063

aluminum profile 6063

6063-t5 aluminum profile

International standard alloy elements commonly used in automotive aluminum alloys %

Alloy Si Cu Mn Mg Zn Others
3003 - 0.05~ 0.2 1.0~1.5 - - -
3103 - - 0.9~1.5 - - -
5049 - - 0.5~1.1 1.6~2.5 - -
6N01 - - - - - -
6005 0.6~ 0.9 - - 0.4~0.6 - -
6005A 0.5~ 0.9 - - 0.4~0.7 - 0.12~0.50(Mn+Cr)
6061 0.4~ 0.9 0.15~   0.40 - 0.6~1.2 - 0.04~0.35Cr
6063 0.2~ 0.6 - - 0.45~0.9 - -
6082 0.7~ 1.3 - 0.4~1.0 0.6~1.2 - -
7N01 - - - 1~2 4~5 -
7003 - - - 0.5~1.0 5.0~6.5 0.05~0.25Zr
7021 - - - 1.2~1.8 5.0~6.0 0.08~0.18Zr
7029 - - - 0.5~0.9 4.2~5.2  
7129 - - - 0.5~0.9 4.2~5.0  
7075 0.40 1.2~2.0 0.30 2.1~2.9 5.1~6.1 Ti 0.2

 
In the car body frame, at present, the main body is the steel single hull structure, and the body occupies 30% of the vehicle quality. Therefore, the manufacture of extrusion aluminum is of great significance for vehicle lightweight, energy saving and emission reduction and the construction of low carbon transportation industry. Aluminum Alloy extrusion performance is good, can be hollow thin-wall profile production section of the complex, making the bumper body structure and use them, body quality can reduce 30%--40%, and has the same impact strength and steel structure, when the vehicle collision accidents, can absorb the impact effectively, protect the safety of people.

Most of the aluminum alloys in the car body frame are extruded with 6 series and 7 series. In order to strengthen the impact strength, the sections of the profiles are mostly“口”、“日”、“目”、“田”. The strength of 7 series alloy alloy is higher than that of 6 series alloy.

Mechanical properties of aluminum alloy profile of body frame

Alloy Temper Tension strength Rm/N∙mm¯² YieldStrength Rp0.2/N∙mm¯² ElongationA5/% General corrosion resistance Corrosion resistance of stress corrosion cracking Weldability Compresability
6063 T5 185 145 12 Good Good Good Good
6N01 T5 275 245 12 Good Good ok Good
6061 T6 310 275 12 ok Good ok Good
7003 T5 360 325 18 ok ok Good Nomal
7N01 380 315 17 ok ok Good Not good

Mechanical Properties and Impact Test Data of Automobile Aluminum Alloy Profiles with Hollow and Complex Cross Section

Profile type Tension strengthRm/N∙mm¯² Yield strength Rp0.2/N∙mm¯² Elongation A5/% Section size Mass ratio* Buffer strength ratio Buffer deformation ratio*
365 325 15 60×60 1.00 1.0 1.0
350 315 14 60×60 1.18 1.34 0.341
360 320 14 60×60 1.37 1.61 0.610
340 305 11 60×60 1.41 1.48 0.230

 
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