Austral Propellers
 
  NIBRAL (Nickel Aluminium Bronze)

Used by Austral in the manufacture of their skiboat propellers.

This premium high tensile alloy is recognised, throughout the world, as one of the best metals available for marine propeller manufacture.
 The alloy basically has no zinc and with an average tensile strength of 85,000lbs per sq.inch gives much greater resistance than Manganese Bronze to bending, flexing and corrosion.
 Its durability makes it ideal for cupped propellers, high HP engines and for heavy commercial.