Note:
1.The magnetic pull-force 90LBS was
tested using a computer-controlled tensile tester, it is the vertical
pull-force which make the fishing magnet pull away from a 10mm t hickness steel plate under ideal condition. The actual pull-force will vary mainly depending on the following factors:
A: Steel thickness: The thinner the steel , the lower the pull-force, 90LBS vertical pull-force was get on base of 10mm thickness steel plate
B: Pulling direction: The bigger of the pulling direction beyond 90 ° ,
the lower the pull-force, normally, the pull-force in horizontal
direction is only about one third of that in vertical direction;
C: Attracting position: The farther beyond the center of gravity, the lower the pull-force is ;
In addtion, iron chips of magnetic surface also reduce the pull-force of magnet at some extent
2.Magnet just only attract iron , ferrous metal and nickel, do not attract gold, silver, copper, aluminiums and their alloy and stainless steel;
3.Magnetic force concentrates on the bottom of the fishing magnet, there is hardly any magnetic force of other surfaces,