Spring Materials Modulus of Elasticity used in Torsion and Tension

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Spring Materials Modulus of Elasticity used in Torsion and Tension

Typical Modulus of Elasticity of Spring Materials used in Torsion and Tension

Ferrous Spring Materials
Material	Modulus of Elasticity^a, psi
Material	In Torsion, G	In Tension, E
Hard Drawn MB
Up to 0.032 inch	11,700,000	28,800,000
0.033 to 0.063 inch	11,600,000	28,700,000
0.064 to 0.125 inch	11,500,000	28,600,000
0.126 to 0.625 inch	11,400,000	28,500,000
Music Wire
Up to 0.032 inch	12,000,000	29,500,000
0.033 to 0.063 inch	11,850,000	29,000,000
0.064 to 0.125 inch	11,750,000	28,500,000
0.126 to 0.250 inch	11,600,000	28,000,000
Oil-Tempered MB	11,200,000	28,500,000
Chrome-Vanadium	11,200,000	28,500,000
Chrome-Silicon	11,200,000	29,500,000
Silicon-Manganese	10,750,000	29,000,000
Stainless Steel
Types 302, 304, 316	10,000,000	28,000,000^b
Type 17–7 PH	10,500,000	29,500,000
Type 420	11,000,000	29,000,000
Type 431	11,400,000	29,500,000

Nonferrous Spring Materials
Material	Modulus of Elasticity^a, psi
Material	In Torsion, G	In Tension, E
Spring Brass Type 70–30	5,000,000	28,800,000
Phosphor Bronze 5 per cent tin	11,600,000	28,700,000
Beryllium-Copper
Cold Drawn 4 Nos.	7,000,000	29,500,000
Pretempered, fully hard	7,250,000	29,000,000
Inconel 600	10,500,000	31,000,000^b
Monelb 400	9,500,000	26,000,000
Monelb K 500	9,500,000	26,000,000
Ni Spanb C 902	10,000,000	27,500,000

^a Modulus G (shear modulus) is used for compression and extension springs; modulus E (Young's modulus) is used for torsion, flat, and spiral springs.

^b May be 2,000,000 pounds per square inch less if material is not fully hard

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