View Single Post
  #3  
Old 24-12-2015, 03:49 PM
Visionary's Avatar
Visionary (David)
Registered User

Visionary is offline
 
Join Date: Jan 2015
Location: Sydney
Posts: 355
Quote:
Originally Posted by pdalek View Post
My plate has mass 540 g and volume 200 ml by displacement (or 224 ml less holes -> ~ 200 by physical measurement)
Density works out at 2.7 which is the expected value for pure aluminium.

It just seems to be heavier than you expect.
My Son is a pedant, he looked into it further and came up with a possible explanation

Aluminum bronze (3-10% Al) 7700 - 8700 Density (kg/m3)

Steel 7850 Density (kg/m3)

That sort of makes some sense and explains the weight of the mount. He lifted the weight/density description from the Engineering Toolbox (website) http://www.engineeringtoolbox.com/me...ties-d_50.html
The weight of the mount is explained with Bronze as an alloy. The alloy must contain a heap of Bronze. Given OW's description, this seems to be the only sensible explanation.
Reply With Quote