Aluminum
Excellent balance of strength, corrosion resistance, and weldability; ideal for structural frames (e.g., window/door profiles, automotive chassis, and aerospace components). Offers good machinability and anodizing compatibility.
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Surface Finishing Options for Brass
Brass CNC turned parts can undergo various surface finishing processes to enhance their appearance, durability, and performance.
As Machined
Anodizing
Alodine
Black Oxide
Surface Finishes We Offer
Since magnesium parts are prone to machining defects and formation of burrs, it’s important to treat them with the right surface finishes.
This will improve their aesthetic appeal and enhance performance and longevity. At RapidDirect, we offer an extensive range of surface finishing options tailored to your requirements,
ensuring optimal protection and visual quality for your magnesium parts.
As Machined
Description: Standard finish with surface roughness of 3.2 μm (126 μin), removes sharp edges and deburrs parts cleanly. Key Use: Functional parts requiring no post-processing (e.g., brackets, gears). Process Tolerance: Dimensional ±0.1 mm, Ra 3.2±0.5 μm Process Specifications: ISO 2768-m standard, burr height ≤0.05 mm
Anodizing
Description: Electrochemical oxide layer for corrosion resistance and aesthetics. Process Compatibility: Post-machining surface treatment Key Use: Aerospace components, consumer electronics (e.g., phone frames). Process Tolerance: Coating thickness 10-25 μm±2 μm, color consistency ΔE≤1.5 Process Specifications: MIL-A-8625 or ISO 7599, sealing pH 5.5-6.5
Alodine
Description: Chemical film for corrosion protection and paint adhesion. Process Compatibility: Post-cleaning chemical immersion Key Use: Aviation and automotive electrical housings. Process Tolerance: Film thickness 0.5-3 μm, visual uniformity Process Specifications: Immersion time 3-10 min, bath temp. 20-30℃
Black Oxide
Description: Thin magnetite layer for corrosion resistance and reduced glare. Process Compatibility: Post-machining chemical treatment Key Use: Tools, firearms, automotive fasteners. Process Tolerance: Coating thickness 0.5-1.5 μm, salt spray ≥24 hrs Process Specifications: Alkaline bath pH 13-14, process time 5-30 min
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