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Xintao Precision Ltd.
Xintao Precision Ltd.

Aluminum CNC Machining

  • Xintao machine aluminum alloy models with diverse surface treatments using advanced technology.

  • Prototypes ready in 3-5 days, small batches in 7 days.

  • 100% inspection for quality assurance.

  • Free replacement of defective parts.

  • Material certificates(RoHS,REACH) and detailed reports included.

Aluminum CNC Machining

Xintao Aluminum CNC Machining Service

  • Aluminum alloy, with its superior machinability and exceptional properties, offers versatility across various manufacturing methods like die casting, forging, and extrusion. It boasts minimal processing stress, excellent mechanical properties, low density, and remarkable corrosion resistance, making it an ideal choice for a wide range of applications.

  • with over 50 CNC machining equipment,we offer comprehensive machining solutions including 5-axis machining, CNC milling, CNC turning, gear hobbing, and prototyping.

Comparison Of Common Aluminum Alloys

Physical properties

Aluminum Grade


Corrosion resistance

Melting Point


Coefficient of Thermal Expansion

Thermal Conductivity

Electrical properties


2.70 g/cm³


585°C (1,085°F)


Around 23.6 μm/m-K

167 W/m-K

43% IACS (International Annealed Copper Standard)


2.81 g/cm3


475°C (887°F)


23.5 x 10-6 m/m-K

130 W/m-K

21% IACS


2.68 g/cm³




 23.8 x 10^-6 m/m-K

118 - 128 W/(m·K) 

0.058 x10^-6 Ω .m


2.7 g/cm3


555°C (1031°F)


24 x 10-6 K-1

180 W/m.K at 20°C

30% IACS (approximate, in T6 condition)

Mechanical properties

Aluminum Grade

Ultimate Tensile Strength (UTS)

Yield Strength (0.2% Offset)

Elongation at break

Modulus of Elasticity (Elastic Modulus)

Fatigue Strength

Brinell Hardness

Vickers hardness


310 MPa (45,000 psi)

275 MPa (40,000 psi)


69 GPa 

96.5 MPa (14,000 psi)

95 HB

107 HB


510–540 MPa (74,000–78,000 psi)

At least 430–480 MPa 


71.7 GPa 

 159 MPa (23 ksi)

150 HB

140-150 HV


270-350 MPa

125 MPa


68.9 GPa

150-200 MPa

60 HB

74 HV


310 MPa (45,000 psi)

 255 MPa


70 GPa

90 MPa

95 HB

95-105 HV

Surface Finishes For CNC Aluminum Parts

Xintao provides an extensive range of surface finishing options aimed at enhancing the surface characteristics of CNC-Milling parts.

As machinedSand blastingPolishingAnodizing

The part exhibits noticeable tool marks and potential sharp edges and burrs, which can be removed upon request.

Providing machined parts with a smooth and uniform matte surface finish to eliminate some tool marks, depending on the sandblasting particles' size.

Achieving a smooth and glossy surface can be done through manual polishing in various directions or by utilizing a chemical polishing treatment.

It splits into Type II (color or clear) or Type III (hard coat) anodizing processes, unable to conceal tool marks. The colors of colored anodization are based on the Pantone color chart.

Chromate Conversion CoatingSurtec 650PlatingPowder Coated

It provides corrosion resistance and enhance the adhesion of subsequently applied paints or coatings on metal surfaces, particularly aluminum, and alloys.

It improves corrosion resistance, enhancing paint adhesion, and providing a base for subsequent organic coatings.

It includes Nickel Plating, Silver Plating, Gold Plating, Zinc Plating, Chrome Plating, Tin Plating, etc, This can include improving corrosion resistance, adding wear resistance, enhancing conductivity, providing decorative finishes, or facilitating solderability. 

Powder coating is a method of applying a durable and protective finish to metal surfaces. It involves spraying a dry powder onto the surface, which is then cured under heat to form a hard, smooth coating. Powder coating offers excellent resistance to corrosion, chemicals, and abrasion, and it can be applied in a wide range of colors and finishes for both decorative and functional purposes.

Aluminum CNC Machining Gallery

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