MRC:
A numeric value that reflects the hardness of the material when used in conjunction with a hardness rating scale.ALME
Material Hardness Rating:
285.0 rockwell b
MRC:
The element,compound,or mixture of which an item is fabricated,excluding any surface treatment.MATL
Material:
Steel, mil-s-8844, cl 1, comp4340, physical condition e, surface condition 4
MRC:
The chemical compound or mechanical mixture properties of which the item is fabricated.MATT
Material:
Steel, mil-s-8844, cl 1, comp4340, physical condition e, surface condition 4