Torsion Spring Materials

Modulus of elasticity in tension for metric units

Wire Material of Torsion Springs

E [MPa]

Drawn patented wire from carbon steel

20.5 10 4

Heat treated wire from carbon steel

20 10 4

Heat treated or annealed wire from alloy steel (particularly Si-Cr, Mn-Cr, Mn-Cr-V)

20 10 4

Wire hardened by drawing from chrome-nickel corrosion-resistant austenic steel

17.5 10 4

Wire hardened by drawing from tin bronze

10.5 10 4

Wire hardened by drawing from brass

8.5 10 4

Modulus of elasticity in tension for English units

Wire Material of Torsion Springs

E [psi]

Music wire QQ-W-470

28 500 000

Oil-tempered steel wire QQ-W-428

28 500 000

Hard drawn steel wire QQ-W-428

28 600 000

Chrome-vanadium alloy steel wire

28 500 000

Chrome-silicon alloy wire QQ-W-412

29 500 000

Stainless steel 302 and 304

28 000 000

Stainless steel 420

29 000 000

Stainless steel 431

29 500 000

Stainless steel 316

28 000 000

Stainless steel 17-7PH

29 500 000