Can't find it- this is for a physics experiment for youngs modulus done with a steel wire.
This Site Might Help You. RE: what is the elastic limit of steel in Nm^2? Can't find it- this is for a physics experiment for youngs modulus done with a steel wire.
It is the Yield Strenght that you are looking for...that is another word for elastic limit. AND, for steel, it does depend on the variant of steel. Not all types of steel are identical, since steel isn't a pure substance. For Young's modulus (and other stiffness properties), just about all variants have the same values. However, for strength properties like Yield strength and ultimate strength and fatigue strength, it does depend on variant, and is precisely why different recipies exist in AISI standards.
It depends on the type of steel and how the wire was made (e.g. whether it was drawn hot or cold, whether it was heat treated after it was drawn, etc). For mild steel the elastic limit is about 400 MPa. Note this is not the same as the breaking stress for the wire which will typically be significantly higher for a ductile material like steel. If you want to measure a stress-strain curve to find youngs modulus, make sure you measure several points at stresses below the elastic limit - for example try increasing the stress in increments of about 50 MPa.
