Abstract
The modulus of elasticity of various kinds of high yield point steels and carbon steels was measured with an ordinary triod valve magnetostriction oscillator, and it was found that the addition of small amounts of special elements to steels causes hardly any change in the modulus of elasticity.
The change in the modulus of elasticity of a carbon steel containing 0.1 percent. of carbon, due to cold working was also measured, the result of which shows that the cold working causes no appreciable change in the modulus of elasticity of the steel.
The modulus of elasticity of armco iron and of carbon steels containing 0.27, 0.46, 0.55 and 0.81 percent. of carbon was measured at elevated temperatures up to 600° the result of which is satisfied by the following formula
Et2=Et1e-a(t2-t1)/lm-t2 where tm is the melting points of steelss.
