www.assfalg-metal.com
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Assfalg GmbH Buchstraße 149 73525 Schwäbisch Gmünd / Germany +49 (0)7171 92505-0 Fax +49 (0)7171 92505-50
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Mild Steel
Alloyed steel
Cast iron
Nickel
Non-magnetic material
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MATERIAL
MATERIAL TO HOLDING POWER
The holding force depends on the type of material to be lifted. The variation of holding force with respect
to material is shown in the following graph.
Mild steel offers the best conductivity for magnetic flux, whereas tool and alloyed steels, cast iron and
stainless steel are characterised by lower magnetic conductivity. Generally, the holding force can be
summed up as the function of carbon, Ni-Cr-content and hardness of the steel.
7.2
CONTACT AREA
The magnetic holding force depends on the contact area between load and magnet. The larger the
contact area, the higher the lifting capacity of the magnet.
7.3
OVERHANG
The admissible overhang of the load depends on the thickness of the steel plate. In order to grip the load
safely, make sure the overhang is within the range shown in the graph (see below). One of the main
causes for sudden release of steel sheets is too large a bending due to too long an overhang length. These
loads do not have sufficient mechanical strength.
