Aluminum Alloy

Aluminum metal is a green material with light weight, high strength, good ductility and workability. Aluminum alloy will form a protective oxide film on its surface in atmosphere and clean water, which can block the contact between the material and the corrosive element, with good corrosion resistance. Aluminum alloy is a metal structural material widely used in industry, and has been used for many years in aerospace, transportation, machinery manufacturing, watercraft and chemical industries. Aluminum alloys are also used in the manufacturing of semiconductor equipment, such as vacuum chambers, wafer carrier trays, and conveyor belt modules.

Aluminum alloy materials are also used in the electric vehicle industry, such as: body, sheet metal and components, because electric vehicles need to improve endurance by lightweight. American electric vehicle manufacturer Tesla continues to research on aluminum alloy materials and process technology for significant lightweight. By doing so, the battery energy consumption and driving noise will also get reduced because of its lightweight.

WKPT obtains different grades of aluminum alloy materials through the upstream supply chain, and performs machining of parts after aluminum rolling. By using three-axis CNC milling machines, machining centers, CNC and grinders, etc. to make high-precision mold parts. We also integrate the downstream supply chain to provide surface treatment to prevent corrosion of aluminum products, hard wear-resistant layers, insulating layers, spray-painted bottom layers, electroplated bottom layers and other surface treatment related processes.

WKPT has the equipment and processes for aluminum alloy casting and machining.
Aluminum Alloy Properties
It has excellent properties such as light weight, high strength, corrosion resistance, good appearance, good heat dissipation, easy forming, easy processing, good electrical conductivity, non-magnetic, easy processing for improved reflectivity, and diversified surface colors. The strength of super-hard aluminum alloy can reach 600 Mpa, and the tensile strength of ordinary hard aluminum alloy can also reach 200-450Mpa. There are various types of aluminum alloy applications, and different aluminum alloy chemical compositions and application ranges have clear regulations and requirements.
Types of Aluminum Alloys
  • Wrought Aluminum Alloy:
    It is an aluminum alloy which structure and shape are changed through stamping, bending, rolling, extrusion and other processes. It is melted and made into ingots, and then with metal plastic deformation processing to make various forms of aluminum alloys.
  • Cast aluminum alloy:
    It is an aluminum alloy that fills the mold with molten metal to obtain blanks of various shapes. It has the advantages of low density, high strength, good corrosion resistance and good DFM, and is less restricted by the structural design of parts.
Aluminum extrusion
Comparison Table of Cast Iron
Category ASTM Spec JIS Spec Chemical Composition (%) Main Purpose
Si Fe Cu Me Mg Zn Ti Cr Ni V 　 Other AL
General Manufacturing Quality Major Mechanical Properties Properties Melting Range Proportion Conductivity
Quality Tensile Yield Elongation Machinability Weldability Corrosion Resistance Surface Treatment
2000 Series
Al-Cu Alloy		 2011 A2011 0.4 0.7 5～6 - - 0.3 - - - - - 0.05 Margin Optical supplies, fuzes, machinable materials
H112.H T8 38 28 10 △ × △ △ 535-643 2.82 45
2014 A2014 0.5-1.2 0.7 3.9-5 0.4-1.2 0.2-0.8 0.25 0.15 0.1 - - - 0.05 Margin Bicycle handlebars, seatposts, mechanical parts materials
H112.H T6 48 41 6 ○ △ △ △ 507-638 2.8 40
2017 A2017 0.2-0.8 0.7 3.5-4.5 0.4-1 0.4-0.8 0.25 0.15 0.1 - - - 0.05 Margin Fuzes, Aviation Parts, Forgings
O.T4-T451 T4 35 22 12 ○ △ △ △ 513-641 2.79 34
2024 A2024 0.5 0.5 3.8-4.9 0.3-0.9 1.2-1.8 0.25 0.15 0.1 - - - 0.05 Margin Mechanical parts, machinable materials
O.T4-T451 T4 49 35 10 ○ △ △ △ 502-638 2.77 30
5000 Series
Al-Mg Alloy		 5052 A5052 0.25 0.4 0.1 0.1 2.2-2.8 0.1 - 0.15-0.35 - - - 0.05 Margin Optical supplies, vehicles
O.112.H H34 24 18 10 △ ◎ ◎ ◎ 593-649 2.68 35
5056 A5056 0.3 0.4 0.1 0.05-0.2 4.5-5.6 0.1 - 0.05-0.2 - - - 0.05 Margin Optical supplies
O.H112.H H34 28 22 14 △ ◎ ◎ ◎ 568-638 2.64 27
5083 A5083 0.4 0.4 0.1 0.4-1 4-4.9 0.25 0.15 0.05-0.25 - - - 0.05 Margin Ships, materials for construction
O.H112.H H112 29 13 12 △ ◎ ◎ ◎ 579-641 2.66 29
6000 Series
Al-Mg-Si Alloy		 6061 A6061 0.4-0.8 0.7 0.2 0.15 0.8-1.2 0.25 0.15 0.04-0.35 - - - 0.05 Margin Materials for construction, bicycle parts
O.T4.T6.T651.T8 T6 27 25 10 △ ◎ ○ ◎ 582-652 2.7 43
6063 A6063 0.2-0.6 0.35 0.1 0.1 0.45-0.9 0.1 0.1 0.1 - - - 0.05 Margin Building materials, heat-dissipating materials, heat exchangers
T1.T5.T6.T8 T5 16 11 8 △ ◎ ◎ ◎ 616-654 2.7 55
6013 - 0.6-1 0.5 0.6-1.1 0.2-0.8 0.8-1.2 0.25 0.1 - - - - 0.05 Margin Materials for bicycles
O.T4.T6 T6 30 26 10 0.2 ◎ ◎ ◎ - 2.76 -
6011 A6011 0.6-2 1 0.4-0.9 0.8 0.6-1.2 12 0.2 0.3 0.2 - - 0.05 - Defense, Sports Equipment, Transportation, Textile
O.T4.T6 T6 38 34.5 12 ◎ ○ ○ ○ 565-650 2.7 36
6066 A6066 0.9-1.8 0.5 0.7-1.2 0.6-1.1 0.8-1.4 0.25 0.2 0.4 - - - - -
O.T4.T6.T651 T6 49 36.5 12 ◎ ○ ○ ○ 565-650 2.7 37
7000 Series
Al-Zn-Mg Alloy		 7001 - 0.35 0.4 1.6-2.6 0.2 2.6-3.4 6.8-8 0.01-0.06 0.18-0.35 - - - 0.05 Margin Sports Equipment
O.T651.6511 T651 57 50 10 ○ △ △ △ - 2.82 　
7005 - 0.35 0.4 0.1 0.2-0.7 1-1.8 4～5 0.01-0.06 0.06-0.2 - - Zr0.08-0.2 0.05 Margin Bicycle materials, welding construction materials
O.T1.T5.T6 T53 36 31 10 ○ ◎ ○ △ 615-643 2.78 41
7046 - 0.12 0.15 2-2.6 0.1 1.9-2.6 5.7-6.7 0.06 0.04 - - Zr0.08-0.15 0.05 Margin Aviation materials, sports equipment
O.T651.6511 T651 41.7 36.5 10 ○ △ △ △ 488-629 2.83 41
7050 - 0.12 0.15 2-2.6 0.1 1.9-2.6 5.7-6.7 0.06 0.04 - - Zr0.08-0.15 0.05 Margin
O.T651.6511 T651 57 50 7 ○ △ △ △ 488-629 2.83 41
7075 A7075 0.4 0.5 1.2-2.0 0.3 2.1-2.9 5.1-6.1 - 0.18-0.28 - - - 0.05 Margin Aviation materials, defense weapons, sports equipment
O.T6.T6511 T6 57 50 7 ○ △ △ △ 476-638 2.8 33
7178 A7178 0.4 0.5 1.6-2.4 0.3 2.4-3.1 6.3-7.30 0.20Zr0.10 0.18-0.35 - - - - - Aviation materials, sports equipment
O.T6.T76.T7651 T6 62 55 10 ○ △ △ △ - - -
- A7N01 0.3 0.35 0.2 0.2-0.7 1～2 4～5 0.2 0.3 - 0.1 Zr0.25 0.05 Margin Bicycle materials, welding construction materials
O.T1.T5.T6 T5 32 27 10 ○ ◎ ○ △ 615-413 2.78 41

◎ Excellent　○ Good　△ Not Good　× Not Suitable　Bi: 0.2-0.6　Pb: 0.2-0.4

2000 Series AL x Cu
  • 2011:
    Free-cutting alloys with good machinability and high strength, but have poor corrosion resistance.
  • 2014, 2017, 2024:
    It contains a large amount of Cu. It has poor corrosion resistance, but has high strength and can be used as a structural material. Forgings are also applicable. Used in aircraft, gears, hydraulic components, and axles.
5000 Series Al x Mg
  • 5052:
    It is the most representative alloy with medium strength, good corrosion resistance, weldability and formability, especially high fatigue strength and good seawater resistance. Commonly used in general sheet metal, ships, vehicles, buildings, bottle caps, and honeycomb panels.
  • 5056:
    Good corrosion resistance. Surface modified by cutting. Easy for anodic oxidation treatment and dyeability. Used in camera body, communication device unit, zipper.
  • 5083:
    Alloys for welding structures. It is the corrosion-resistant alloy with the highest strength among practical non-heat-treated alloys, and is suitable for welding structures. Seawater resistance and good low temperature properties. Used in ships, vehicles, low temperature vessels, pressure vessels.
6000 Series AL x Mg x Si
  • 6061:
    Heat-treated corrosion-resistant alloy. It will be very high endurance with T6, but the strength of the welded joint is low. Used for screws, anchors, ships, vehicles, and land structures.
  • 6063:
    A representative alloy for extrusion. The strength is lower than that of 6061, the extrudability is good, and it can be used as a shape material with complex cross-sectional shapes. It has good corrosion resistance and surface treatment. Commonly used in construction, highway guardrails, high fences, vehicles, furniture, home appliances, and decorations.
7000 Series AL x Zn x Mg
  • 7075:
    One of the alloys with the highest strength among the aluminum alloys, but the corrosion resistance is not good. The covering with 7072 can improve its corrosion resistance, but the cost increases. Suitable for thick plate and forged aircraft.
Aluminum Alloy For Casting
JAPAN GERMANY UNITED KINGDOM UNITED STATES
JIS DIN BS AA
AC4C 　 LM25 356
AC3A G-AlSil2 LM6 413.2
ADC1 GD-A1SH2 LM6 413
ADC3 GD-AlSilOMg LM20 360
ADC5 GD-AlMg8Cu 　 518.2
ADC6 GD-AlMg3Cu LM5 514
ADC10 GD-AlSi8Cu3Fe LM24 380.1
ADC12 　 LM12 383
Critical Factor On Aluminum Alloy Rust Resistance

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