Hello, could you please tell me about Young’s modulus, Poisson’s ratio, density, yield strength and thermal expansion of coil spring steel SUP9A and disc spring washer steel S50CM?
Dear Ishizuka, thank you for your question!
Our standard materials are SUP10 and S60CM (SAE1060), but we think that they have almost the same values.
[SUP9A]
Young’s modulus: 206000 N/mm^2
Poisson’s ratio: 0.3
Density: 7.85 kgf/mm^3
Yield strength (proof stress): 1170 N/mm^2
Thermal expansion (coefficient of linear expansion): About 10-11 x 10^- 6 mm/℃
[S60CM]
Young’s modulus: 206000 N/mm^2
Poisson’s ratio: 0.3
Density: 7.85 kgf/mm^3
Yield strength (proof stress): 834 N/mm^2
Thermal expansion (linear expansion coefficient): About 10-11 ×10^-6 mm/℃
