Disc brake caliper bracket

[Aukai]

We need to water jet a new mounting bracket to mount a disc brake caliper for the front rotors. Should we use 6061, or 7075 aluminum?

 

[mmcmdl]

7075 is more expensive but stronger . It doesn't have the corrosion properties of 6061 which may not matter being on a car .

 

[alloy]

I've always heard 7075 was the strength of steel but the weight of aluminum. On my cnc mill it cuts the same as 6061.

For the small amount of material you will need and considering it's a safely item I wouldn't even consider 6062.

 

[OTmachine]

Made the ones for the 1939 GMC from 3/8 T1 steel plate. Did not want to skimp on brakes. Donor car was a 1982 Trans Am.

 

[AllenV]

This source:

Aluminum alloy types and features - Aluminum Automobile Technology

Advanced Aluminum Technology for the Automobiles of the Future

uacj-automobile.com

Suggests that 7000 series is your best option.

Another source that I've now lost indicated that 7075 T6 machines better than 6061 T6

(Note that the automobile technology page ignore machining as an important manufacturing property.)

 

[AllenV]

This site:

The top 3 aluminium alloys: All you need to know

Aluminium has become a very popular material for applications across many different industries. If you want to learn all about the top 3 aluminium alloys.

www.weerg.com

says that anodizing of 7075 after machining is NOT something to do.

Anyone know why?

 

[AllenV]

another useful page at Send-Cut-Send

Identifying Aluminum Alloys and Their Differences

SendCutSend offers several aluminum alloys with a spectrum of values and applications. Learn how to identify and pick the right one for your project.

sendcutsend.com

Send-Cut_Send will anodize 7075. At odds with the previous post??

 

[Aukai]

Thank you for the links