Steel, federal standard 66, aisi/sae 1010 or steel, federal standard 66, aisi/sae 1020
Material Specification
Fed standard 66 federal standard 1st material response or aisi 1010 assn standard single material response or sae 1010 assn standard single material response and federal standard 66 federal standard 2nd material response or aisi 1020 assn standard single material response or sae 1020 assn standard single material response