Aluminum CNC Machining Service
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Aluminum
Lightweight, high thermal conductivity, Excellent Machinability, Superior Dimensional Stability, Tight-Tolerance Capable, Perfect for Complex CNC Milling and Turning.
Price:
$0
Lead Time:
< 5 days
Wall Thickness:
0.5 mm
Tolerances:
±0.005″ (±0.125mm)
Max Part Size:
200 cm x 80 cm x 100 cm
Aluminum 5052
‌Properties‌: Mg 2.2-2.8%, seawater corrosion resistance (salt spray ≥2000h), high fatigue strength (50% longer cycle life than 3003). ‌Applications‌: Marine structures, automotive body panels, medical equipment frames.
Tensile Strength, Yield (MPa) Fatigue Strength (MPa) Elongation at Break (%) VHardness (Brinell) Density (g/cm³)
193 115 12 60 2.68
Aluminum 5083
‌Properties‌: High Mg content (4.0-4.9%), tensile strength ≥275 MPa, excellent cryogenic toughness (-196℃ impact ≥20 J). ‌Applications‌: LNG tanks, polar expedition equipment, armored vehicle panels.
Tensile Strength, Yield (MPa) Fatigue Strength (MPa) Elongation at Break (%) VHardness (Brinell) Density (g/cm³)
270-310 125 12 75 2.66
Aluminum 6061
‌Properties‌: Balanced Mg-Si alloy (Mg 1.0%, Si 0.6%), heat-treatable (T6 tensile ≥310 MPa), anodized surface hardness ≥400 HV. ‌Applications‌: Robotic arms, bicycle frames, optical instrument mounts.
Tensile Strength, Yield (MPa) Fatigue Strength (MPa) Elongation at Break (%) VHardness (Brinell) Density (g/cm³)
276 96 17 95 2.70
Aluminum 6061-T6
‌‌Properties‌‌: Balanced Mg-Si alloy (Mg 1.0%, Si 0.6%), heat-treatable (T6 tensile ≥310 MPa), anodized surface hardness ≥400 HV, good weldability and corrosion resistance. ‌‌Applications‌‌: Robotic arms, bicycle frames, optical instrument mounts, marine fittings, automotive components.
Tensile Strength, Yield (MPa) Fatigue Strength (MPa) Elongation at Break (%) VHardness (Brinell) Density (g/cm³)
276 96 10-12 95 2.70
Aluminum 6063
‌Properties‌: Higher Si content (0.6-0.9%), excellent extrudability (0.5mm thin walls), architectural-grade surface finish (anodized film ≥10μm)‌. ‌Applications‌: Window profiles, LED heat sinks, solar mounting systems.
Tensile Strength, Yield (MPa) Fatigue Strength (MPa) Elongation at Break (%) VHardness (Brinell) Density (g/cm³)
214 65 12 73 2.70
Aluminum 6082
‌‌Properties‌‌: Medium-strength Mg-Si alloy (Mg 0.6-1.2%, Si 0.7-1.3%), heat-treatable (T6 tensile ≥260-310 MPa), excellent corrosion resistance, good machinability and weldability. ‌‌Applications‌‌: Structural engineering components, bridges, cranes, transportation equipment, marine applications.
Tensile Strength, Yield (MPa) Fatigue Strength (MPa) Elongation at Break (%) VHardness (Brinell) Density (g/cm³)
260 97 10-12 95 2.70
Aluminum 7050
‌Properties‌: Al-Zn-Mg-Cu alloy (Zn 6.2%, Mg 2.3%, Cu 2.2%), tensile strength ≥510 MPa, stress corrosion resistance, ideal for large structures. ‌Applications‌: Aircraft wing spars, rocket fuel tanks, precision mold cores.
Tensile Strength, Yield (MPa) Fatigue Strength (MPa) Elongation at Break (%) VHardness (Brinell) Density (g/cm³)
510-570 200-300 8-12 145-155 2.83
Aluminum 7075
‌‌Properties‌‌: High-strength Zn-Cu-Mg alloy (Zn 5.6%, Cu 1.6%, Mg 2.5%), heat-treatable (T6 tensile ≥570 MPa), lower corrosion resistance than 6061 unless coated or anodized, excellent fatigue strength. ‌‌Applications‌‌: Aerospace structures (aircraft fuselage, wings), military components, high-performance automotive parts, bicycle racing frames, rock-climbing equipment.
Tensile Strength, Yield (MPa) Fatigue Strength (MPa) Elongation at Break (%) VHardness (Brinell) Density (g/cm³)
503 160 11 150 2.81
Aluminum 7075-T6
‌‌Properties‌‌: High-strength Zn-Cu-Mg alloy (Zn 5.6%, Cu 1.6%, Mg 2.5%), heat-treatable (T6 tensile ≥570 MPa), lower corrosion resistance than 6061 unless coated. ‌‌Applications‌‌: Aerospace structures, military aircraft components, high-stress machinery parts, bicycle racing frames.
Tensile Strength, Yield (MPa) Fatigue Strength (MPa) Elongation at Break (%) VHardness (Brinell) Density (g/cm³)
503 159 11 150 2.81
Surface Finishing Options for Brass
Brass CNC turned parts can undergo various surface finishing processes to enhance their appearance, durability, and performance.
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As Machined
Anodizing
Alodine
Black Oxide
Brushing
Etching
Electroless Plating
Electroplating
Electrophoretic
Grinding
Heat Treatment
Knurling
Laser Engraving
Overmolding
Polishing
Passivation
Powder Coating
Phosphating
Painting
Sand blasting
Teflon Coating
Tumbling
SPI Finish
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
Brushing
Description: Linear abrasive finish for decorative texture. Process Compatibility: Manual/CNC abrasive belts Key Use: Appliance panels, architectural trims. Process Tolerance: Texture depth 0.05-0.2 mm, angle deviation ≤5° Process Specifications: Abrasive belt grit 80-240, feed speed 10-30 m/min
Etching
Description: Chemical/mechanical removal for micro-texturing or marking. Process Compatibility: Laser/chemical masking Key Use: Circuit boards, decorative logos. Process Tolerance: Etch depth 0.01-0.5 mm±5%, alignment ±0.1 mm Process Specifications: Etchant concentration 10-30%, laser power 20-100 W
Electroless Plating
Description: Uniform metal coating (e.g., nickel) without electricity. Process Compatibility: Chemical bath deposition Key Use: Wear-resistant industrial valves, connectors. Process Tolerance: Coating thickness 5-50 μm±5%, porosity ≤5/cm² Process Specifications: Bath temp. 85-95℃, pH 4.5-5.5
Electroplating
Description: Electrochemical metal coating (e.g., chrome, zinc) for durability. Process Compatibility: Post-machining electrodeposition Key Use: Automotive trim, jewelry. Process Tolerance: Coating thickness 5-25 μm±2 μm, adhesion ≥4B (ASTM B571) Process Specifications: Current density 1-10 A/dm², bath temp. 40-60℃
Electrophoretic
Description: Polymer coating via electric field for corrosion resistance. Process Compatibility: Post-cleaning immersion Key Use: Automotive frames, HVAC components. Process Tolerance: Coating thickness 15-30 μm±3 μm, edge coverage ≥80% Process Specifications: Voltage 50-300 V, cure 160-200℃×20 min
Grinding
Description: Precision abrasive finish for tight tolerances. Process Compatibility: Surface/cylindrical grinding Key Use: Bearing races, hydraulic shafts. Process Tolerance: Dimensional ±0.005 mm, Ra 0.4-0.8 μm Process Specifications: Wheel grit 60-120, coolant flow 5-20 L/min
Heat Treatment
Description: Thermal process to alter material hardness/toughness. Process Compatibility: Post-machining quenching/tempering Key Use: Gears, cutting tools. Process Tolerance: Hardness HRC 45-60±2, distortion ≤0.1% Process Specifications: Quench temp. 800-1000℃, temper time 1-4 hrs
Knurling
Description: Diamond or linear pattern for improved grip. Process Compatibility: CNC lathe rolling Key Use: Handles, adjustment knobs. Process Tolerance: Pattern depth 0.2-0.5 mm, pitch ±0.05 mm Process Specifications: Roller pressure 200-500 N, feed 10-50 mm/min
Laser Engraving
Description: Permanent marking via laser ablation. Process Compatibility: Post-processing laser systems Materials: Metals, plastics, wood Key Use: Serial numbers, branding on industrial parts.
Overmolding
Description: Molding soft material (TPU/silicone) over rigid inserts. Process Compatibility: Injection molding Materials: Plastics, metals (as inserts) Key Use: Ergonomic handles, waterproof seals. Process Tolerance: Overmold thickness 1-5 mm±0.2 mm, bond strength ≥5 MPa Process Specifications: Injection pressure >5 MPa, mold temp. 40-80℃
Polishing
Description: Mirror-like finish via abrasive compounds. Process Compatibility: Manual/robotic buffing Key Use: Medical instruments, luxury fixtures. Process Tolerance: Ra 0.025-0.1 μm, gloss ≥90 GU Process Specifications: Wheel speed 1000-3000 rpm, compound grit 2000-5000
Passivation
Description: Acid treatment to remove free iron and enhance corrosion resistance. Process Compatibility: Post-cleaning chemical immersion Key Use: Surgical tools, food processing equipment. Process Tolerance: Film thickness 0.001-0.01 μm, salt spray ≥96 hrs Process Specifications: Nitric acid 20-50%, process time 20-60 min
Powder Coating
Description: Electrostatic polymer powder cured into durable film. Process Compatibility: Post-cleaning spray and bake Key Use: Outdoor furniture, automotive wheels. Process Tolerance: Coating thickness 60-120 μm±10 μm, ΔE≤1.0 Process Specifications: Voltage 30-90 kV, cure 180-200℃×15 min
Phosphating
Description: Phosphate layer for lubrication and paint adhesion. Process Compatibility: Chemical immersion Key Use: Engine components, firearm parts. Process Tolerance: Coating weight 2-5 g/m², crystal size ≤5 μm Process Specifications: Bath pH 2-4, process temp. 40-70℃
Painting
Description: Liquid coating for color and protection. Process Compatibility: Spraying/dipping Materials: Metals, plastics Key Use: Consumer electronics, automotive body panels. Process Tolerance: Coating thickness 20-50 μm±5 μm, adhesion ≥3B (ASTM D3359) Process Specifications: Spray pressure 0.3-0.6 MPa, cure 80-120℃×30 min
Sand blasting
Description: Abrasive jet finish for uniform matte texture. Process Compatibility: Post-machining blasting Materials: Metals, glass, stone Key Use: Architectural facades, engine blocks. Process Tolerance: Ra 1.6-6.3 μm, coverage ≥95% Process Specifications: Grit size 80-120, air pressure 0.4-0.7 MPa
Teflon Coating
Description: Non-stick, chemical-resistant polymer layer. Process Compatibility: Spraying/baking Materials: Metals, ceramics Key Use: Cookware, chemical valves. Process Tolerance: Coating thickness 15-50 μm±5%, non-stick cycles ≥1000 Process Specifications: Sintering 360-400℃, cure time 10-30 min
Tumbling
Description: Barrel polishing for edge rounding and deburring. Process Compatibility: Vibratory/rotary barrels Materials: Metals, plastics Key Use: Jewelry, small hardware components. Process Tolerance: Edge radius R0.1-0.5 mm, weight loss ≤1% Process Specifications: Media size 3-10 mm, speed 10-30 rpm, time 1-12 hrs
SPI Finish
Description: Graded texture (e.g., SPI-A1 for glossy, SPI-C3 for matte). Process Compatibility: EDM, polishing Materials: Tool steel, aluminum molds Key Use: Plastic injection molds for consumer products. Process Tolerance: Ra 0.05-1.6 μm, texture replication ≥90% Process Specifications: SPI-SPE-1 standard, EDM current 5-50 A
pros
Exceptional Machinability: Brass is highly machinable, allowing for precise and efficient machining.
Corrosion Resistance: It offers high resistance to corrosion, making it suitable for harsh environments.
Aesthetic Appeal: Its appearance is attractive and ideal for decorative and aesthetic applications.
Good Conductivity: Brass has excellent thermal and electrical conductivity.
Versatility: Brass can also be used in various industries, from electronics to plumbing.
cons
Higher Material Cost: Brass can be more expensive compared to some other metals.
Potential for Dezincification: In certain environments, brass can suffer from loss of zinc, leading to weakened material.
Applications of CNC Machined Aluminum Parts
Aerospace:Aircraft structural parts (brackets, mounts),Satellite components requiring thermal stability,UAV frames with weight constraints Automotive:Engine blocks and transmission housings,Lightweight EV battery enclosures,Custom suspension linkages Medical:Sterilizable surgical instrument handles,MRI-compatible equipment frames,Prosthetic joint interfaces

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