What is ADC12 Aluminum Alloy - A383 Aluminum Properties & Composition | Diecasting-mould

In the design phase, specify the right aluminum material to make the perfect die casting. Among these die cast aluminum alloys, ADC12 is a proper choice for a broad range of applications. To learn about this alloy, here we’ll get into the characteristics, benefits, chemical composition, physical and mechanical properties of ADC12 (A380) aluminum alloy and its uses in die casting.

What is ADC12 Aluminum Alloy?

ADC12, also known as A383, is an aluminum alloy used for die casting parts manufacturing. What does ADC mean? ADC stands for Aluminum Die Castings, ADC12 is JIS ADC12 for short. ADC12 aluminum is one of the most widely used materials for worldwide die casting factory, due to its great die casting properties, including excellent thermal conductivity, electrical conductivity, and cutting performance; good filling performance and less shrinkage; low density and high strength; good corrosion resistance and oxidation resistance, dimensional stability, and good surface treatment characteristics. ADC12 aluminum castings also work normally at high or low temperature and the material is easy to be cast. 


ADC12 is the modification version of ADC10 alloy, it performs well when casting complicated geometries and also easier to work with than A360, but it does not offer as much strength as ADC10.

ADC12 Aluminum Chemical Composition - A383 Aluminum Alloy Composition

Cu: 2.0-3.0%

Si: 9.5 – 11.5 %

Mg: 0.10 – 0.30 %

Zn: ≤3.0 %

Fe: ≤1.3%

Mn: ≤0.5%

Ni: ≤0.5%

Sn: ≤0.15 %

Al: 79.3 – 88.4 %

Others: ≤0.5%

ADC12 Aluminum Properties - Physical and Mechanical Properties of A383 Aluminum

A383 Aluminum Physical Properties

Density of ADC12: 2.74 g/cm3

Melting point (average): 549 ℃

Thermal conductivity: 96 W/mK

Coefficient of thermal expansion: 21.1 µm/m°K

Electrical Conductivity: 23.0 % IACS

A383 Aluminum Mechanical Properties

Hardness, Brinell: 85

Hardness, Rockwell B: 53

Hardness, Vickers: 96

Tensile Strength, Ultimate: 310 MPa

Tensile Strength, Yield: 152 MPa

Elongation at Break: 3.5%

Fatigue Strength: 131 MPa

Shear Strength: 172 MPa

Modulus of Elasticity: 71.0 GPa

Is ADC12 Aluminum Alloy the Right Die Casting Material for You?

Select the aluminum best suited for the job at the design stage can save time and cost. When choosing the best aluminum alloy for die casting, you should consider the purposes or applications first. ADC12 alloy can be used for a wide range of applications, typical uses of A380 aluminum castings are cylinder head cover, sensor bracket, motor cover, housing, electronic equipment, motor vehicle components, appliances, furniture, power tools, LED lighting, bicycles, machinery, communications equipment, electric vehicles, carpentry, valves, etc. 


In addition, even though the A380 is the most common die cast aluminum, A383 is often selected when intricate or complex parts are needed, its ease of casting also facilitates the use in metal casting. When it comes to affordability, ADC12 is an excellent choice to build castings in a cost-efficient solution.