Modulus of Elasticity of steel at 1000degC
Modulus of Elasticity of steel at 1000degC
(OP)
I have a reference in MIL-NDBK-5H that shows the relationship between modulus and temperature but it only goes to 1000F. Where can I find one that goes to at least 1000 deg C?





RE: Modulus of Elasticity of steel at 1000degC
Above this temperature neither steel, stainless steel nor nickel base superalloys behave in an elastic manner. That is, stress is no longer proportional to strain. "Time-dependent properties" rule. For just about any stress level, the material will "creep", deform slowly with time. One cannot use elastic modulus data, even that which is published, to calculate a deflection from load. There will be an initial more-or-less elastic deflection, then that deflection will increase slowly with time. The creep rate (deflection rate) will depend upon stress and upon the strength of the material in question. The measure of strength in this range is either creep or time to rupture. Creep may be total creep, more commonly used in Europe, or minimum creep rate, commonly used in USA. More written discussions of this topic may be had from Special Metals, Huntington West Virginia, or Rolled Alloys, Michigan.
James Kelly
www.rolledalloys.com
RE: Modulus of Elasticity of steel at 1000degC