Pg 73 The Foseco Foundryman's Handbook

Aluminium	1.3%		1/75
Zn		0.7%     ie x 1.007
Glass PP	1.2%
Styrene		0.5-0.7%
Cast Iron Grey	0.9-1.3%       1/120=0.00833=0.8%
Steel Carbon	1.6-2.0%
Steel Chromium	2.0%

Lost Foam
Steel + Styrene Shrinkage  	eg 1.6+0.5=2.1%
Cast Iron + Styrene Shrinkage	eg 0.9+0.5=1.4%


Rely
Steel		1.5%
Wax		2.1%
Total		3.6%



VITON Rubber shrinkage 2.8%      X 1.028