Type of Metal Shrinkage
Aluminium 3.8 microns per mm diameter
Brass 3.4 microns per mm diameter
Cast Iron 1.8 microns per mm diameter
Copper 3.0 microns per mm diameter
Magnesium 4.5 microns per mm diameter
Nickel 2.1 microns per mm diameter
Steel 1.9 microns per mm diameter
Zinc 5.4 microns per mm diameter