| http://www.w3.org/ns/prov#value | - Of more significance, is the behavior of the bers after they have been extended by the test procedure to their yield points, Y, and then beyond to their point of fracture, T, the portions of the curves which are of most interest then are those between Y and T. Referring to FIG. 3, atactic and isotactic polystyrene which is un stretched or stretched less than 250% tends to show brittle behavior whe
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