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aussiebeef
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Hi people
need help on finding the proof stress of tool steel after heat treatment can't seem to get it
thanks
need help on finding the proof stress of tool steel after heat treatment can't seem to get it
thanks
One has to transform the load to stress, and the extension to strain.aussiebeef said:Proof stress is .2% of the original cross sectional area, then measure line out of the 0.2% strain parallel to the stress/strain line until it hits the stress/strain curve. I think that's what it means but I can't see a curve on the stress/strain line I don't what really to do.
Yeah its homework lol
The proof stress of tool steel is a measure of the stress that a material can withstand without permanent deformation. It is the stress at which a material begins to exhibit plastic behavior and is often used as an indicator of a material's strength and durability.
The proof stress of tool steel is determined through a tensile test, also known as a tension test. This involves pulling a sample of the material until it reaches its breaking point, while measuring the amount of force applied. The proof stress is then calculated by dividing the force by the original cross-sectional area of the sample.
Proof stress is important in tool steel because it indicates the point at which the material will permanently deform under stress. This is crucial in applications where the steel is subjected to high levels of stress, such as in the manufacturing of tools and machinery.
The proof stress of tool steel can be affected by several factors, including the composition of the steel, its heat treatment, and its microstructure. The presence of impurities, such as sulfur and phosphorus, can also impact the proof stress of tool steel.
The proof stress of tool steel can be increased through various methods, such as alloying the steel with elements like chromium, vanadium, and molybdenum, which can improve its strength and toughness. Heat treatment processes, such as quenching and tempering, can also increase the proof stress of tool steel.