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What are the common spring materials?

The following are the common spring materials, and their properties. 

Spring Material Materials Specification Density (lb/in) 3 Minimum Tensile Strength  (psi x 106) Modulus of Elasticity (E) (psi x 106) Modulus Torsion Maximum Operating Temperature Application
Beryllium Copper ASTM B197 0.298 150-230 18.5 7.0 400 oF Good corrosion resistance, electrical conductivity and physical strength
Chrome Silicon ASTM A401 0.284 235-300 30.0 11.5 475 oF Shock loads and moderately elevated temperature
Chrome Vanadium ASTM A231 0.284 190 -300 30.0 11.5 425 oF Ideal for shock loads and moderately elevated temperature
Inconel Springs X 750 AMS 5698/5699 0.298 155- 230 31.0 12.0 750 oF – 1100 oF Good corrosion resistance at moderately elevated temperatures
Music Wire Springs ASTM A228 0.284 230-399 30.0 12 ( up to 0.100ʺ) 11.75  ( over 0.100 ʺ) 250 oF Excellent surface finish
Phosphor Bronze ASTM B159 0.320 105-145 15.0 6.25 200 oF Cold drawn.  Good electrical conductivity and corrosion resistance
Stainless Steel Springs 316 ASTM A313 0.286 110 – 245 28.0 10.0 550 oF Better corrosion and heat resistance than 302
Stainless Steel 302/304 ASTM A313 0.286 125-325 28.0 10.0 550 oF Cold drawn. General purpose  heat and corrosion resistance
Stainless Steel 17-7 PH AMS 5678 0.282 235-335 29.5 11.0 650 oF High strength. General purpose corrosion resistance

Related Topics –

1. Materials