Ferrous : Non-Ferrous : Polymers : Ceramics : Bolts : Springs : Thermodynamics : Bending : Stress
In calculating the spring parameters the torsional yield strength (S ys ) is used. The relationship between the torsional yield strength and the ultimate strength Sut can be approximated with a range as follows.
0,35 Sut =< S ys =< 0,52 Sut
wire and hard drawn steel wire have an approximate
relationship S ys = 0,45 Sut
Valve spring, CR_Va, CR-Si, Hardened and Tempered Carbon steel wires have an approximate relationship S ys >= 0,50 Sut
Many Non-ferrous materials have an approximate relationship S ys >= 0,35 Sut
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