1. Name
Elongation (δ)
2, description
Properties of the plastic materials described Index – elongation and reduction of area [delta] ψ. I.e., tensile breaking elongation after the standard sample total deformation [Delta] L of the original gauge length L of the segment than to the percentages: δ = ΔL / L × 100 percentage.
engineering materials often referred to as the percentage δ≥5 plastic material, such as dead load of normal mild steel, aluminum, copper or the like; and the percentage of the material is referred δ≤5 brittle material, such as room temperature static load of cast iron, glass, ceramics and so on.
Elongation divided into fixed multiple A5, A10 and the scaling in different ways of measuring the distance A50, A80, A100 and the like. A5 is the ratio of the original specimen gauge length to diameter ratio of 5, A10 is the ratio of the original specimen gauge length to diameter ratio of 10; A50 non-proportional sample of the original gauge length is 50mm, A80, A100 with empathy.