6061 High Precision Super Flat Aluminium Sheet

Chemical composition of 6061 aluminum alloy、

●Aluminum (Al): balance
●Silicon (Si): 0.4-0.8%
●Ferrum (Fe): 0.7% max
●Copper (Cu): 0.15-0.4%
●Manganese (Mn): 0.15% max
●Magnesium (Mg): 0.8-1.2%
●Chromium (Cr): 0.04-0.35%
●Zinc (Zn): 0.25% max
●Titanium (Ti): 0.15% max
●Other elements: Each 0.05% max, Total 0.15% max

Typical mechanical properties of 6061T651 aluminum

●Tensile strength: 290 MPa
●Yield strength: 240 MPa 
●Elongation: 12%
●Hardness (Brinell): 95 HB

(The values are typical or min values,for reference only.)  

6061 T6 VS T651

6061 T651 is a certain amount of stretching and flatting on the basis of T6 temper .Reduced the internal stress, not easy to deform when processing.
In general, if there are no precise requirements for dimensional stability and elastic allowance, aluminum alloy 6061 T6 is good enough; If for the precision workpiece, in order to avoid the processing of elastic recovery and size can not maintain stability, it is necessary to choose 6061 T651,Such as 3C products,Precision parts.  

The advantage of super Flat Aluminium Sheet

1.The flatness of this aluminum plate is higher than that of the ordinary aluminum plate. 
2.After stretching to reduce stress, processing is not easy to deformation, long time use of small deformation. 
3.After 400 mesh grinding, the surface better than the surface of ordinary aluminum plate.