High-Strength Steels for Plastic Design
Author: Adams, Peter F.

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Product Description
Current design specifications permit the use of plastic design procedures for low carbon structural steels only. This restriction is justified because the research on which the specifications were based was performed mainly on steels of this family. Since 1962 a project has been in existence at Lehigh University which has as its aim the extension of plastic design procedures to include the high-strength steels having yield stresses up to 50 ksi. This group of steels includes the following ASTM designations: A440, A441 and A242. The object of this paper is to compare the behavior of members of high-strength steel (in this case ASTM-A441) with that of low-carbon structural steel members (A36 or A7) and to draw conclusions concerning the suitability of the high-strength steels for plastic design. Since the low carbon steels, henceforth called structural steels, have been used for many years in plastically designed structures, it will be assumed that properly designed members of these steels will behave in a satisfactory manner.3 The high-strength steel members will then be evaluated using the behavior of the structural steel members as a reference.