New propeller range & material from Mercury
Mercury Marine has developed a new proprietary alloy, X7, which is claimed to be a major technological breakthrough in that it is 30 percent stronger and four times more durable than conventional stainless steel. A new line of propellers called Enertia will be produced from X7.
The first of the Enertia range, available in Europe by mid-2006, will be for use on Mercury and Mariner Verado, OptiMax and their other outboards rated at 135HP (101kW) and higher.
The strength of X7 is enabling Mercury to design its Enertia propellers with a far more aggressive blade geometry, such as thinner blades, greater rake angles and sharper leading edges, which, in turn, enhances boat performance without the need for extra horsepower.
This alloy is so hard that the design engineers have had to produce new tools in order to work the material.