Feature MIL-A-8625 Type II Anodize MIL-A-8625 Type III Anodize (Hardcoat) Coating Thickness 5–25 µm 25–100+ µm Surface Hardness 300–400 HV 400–700 HV Salt Spray Resistance 336–500 hours 1000+ hours Autoclave Cycle Tolerance ~200 cycles 500+ cycles Chemical Wipe Resistance Good…
Alloy Tensile Strength (MPa) Yield Strength (MPa) Elongation (%) Corrosion Resistance Machinability Cost Best Use Case in Automotive Interior 6061 310 276 12 Good Excellent $$ Trim panels, bezels, structural brackets 7075 572 503 11 Fair Good $$$ High-stress components:…
Feature Aluminum Alloy Shell (CNC Machined) Plastic Shell Tolerance Precision ±0.001in ±0.01in or less precise Heat Dissipation 3x faster than plastic Slower, prone to heat buildup Structural Rigidity Reduces key wobble, rigid chassis Flexible, may flex under use Durability (Actuations)…