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Molecular formula : MW : CAS :
nature : materials by external forces to a certain limit, even if it does not increase the burden still remain noticeable plastic deformation. This phenomenon called "surrender." The phenomenon occurred when the yield stress, said the yield point, or yield limit, with σ s said. Some of the materials yield point is not clear. Projects often require residual deformation reach 0.2% of stress, as a "condition yield limit" to σ 0.2 said.
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