MRC:
The specification,standard,or manufacturers reference,and the classification designation,such as class,condition,temper,and the like,that identifies the material.MDCL
Material Specification:
Astma167, 302, 303, 303se, or 304 assn standard single material response or astma240, 302, 303, 303se, or 304 assn standard single material response or astma276, 302, 303, 303se, or 304 assn standard single material response or astma479, 302, 303, 303se, or 304 assn standard single material response or astma581, 302, 303, 303se, or 304 assn standard single material response or astma582, 302, 303, 303se, or 304 assn standard single material response
