Up to and including 1.1 mm material thickness cold-formed
Disc springs of group 1 are stamped up to a material thickness of 1.1 mm similar to heavy duty washers and are manufactured from spring steel as per EN 10132-4-C678.
Custom-made products are available on request for higher production volumes, including disc springs made of spring steel as per EN 10132-4-51CrV4 or disc springs made of stainless spring band as per EN 10151 (e.g. X10CrNi 18-8).
The high durability of disc springs is achieved through careful heat treatment and subsequent presetting.
An adequate phosphate coating of disc springs is one of the methods suitable to control corrosion and to improve anti-friction properties (friction behaviour).
Other surfaces are available according to customer-specific requirements.