MRC:
The element,compound,or mixture of which an item is fabricated,excluding any surface treatment.MATL
Material (non-core):
Aluminum alloy, qq-a-250/6, h321 or aluminum alloy, qq-a-250/7, alloy 5086
MRC:
Consists of plating,dip,and/or coating that cannot be wiped off.plating and/or coating is any chemical and/or metallic additive,electrochemical,or mild mechanical process which protects a surface.SURF
Surface Treatment (non-core):
Anodized, mil-a-8625, type 1 or anodized, mil-a-8625, type 2, class 1