MRC:
The element,compound,or mixture of which an item is fabricated,excluding any surface treatment.MATL
Material:
Steel, mil-s-5059, comp 301 or steel, mil-s-5059, comp 302
MRC:
The chemical compound or mechanical mixture properties of which the item is fabricated.MATT
Material:
Steel comp 301 or steel comp 302
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:
Mil-s-5059, comp 301 military specification 1st material response and mil-s-5059, comp 302 military specification 2nd material response