For standard applications, the spring material 51CrV4 (No.
1.8159) is cold formed and used. Furthermore, special materials can be used for applications at very high and low temperatures or in a
corrosive atmosphere. Depending upon the specific requirements,
Mubea uses thermally stable materials (No. 1.4122,
1.2567, 1.4923), corrosion resistant materials (No. 1.4310, 1.4568,
1.4401), nickel based materials (2.4668, 2.4669, 2.4969) and
beryllium copper alloys (2.1247, 2.4132).
Increased Fatigue Life
Nearly all Mubea disc springs are shot-peened in-house.
Shot-peening creates residual compressive stresses that
result in a considerably higher fatigue life than required
by DIN 2093.
Corrosion protection for Disc Springs
The standard corrosion protection for disc springs is zincphosphating
and oiling. If a higher level of corrosion
protection is required due to the operating environment of
the disc spring, the following alternatives are available:
- Zinc-phosphating and waxing
- Galvanizing
- Mechanical zinc plating and chromating
- Delta Tone/Delta Seal Coating
- Dacromet/Geomet Coating
- Chemical (Electroless) nickel plating
Effects of temperature on modulus of elasticity
(recommended values for design purposes)
Woehler diagrams