The difference between machined aluminum and die-cast aluminum
- Nov 01, 2018 -

The heat dissipation and good appearance of aluminum alloys have surpassed the current plastic materials, and the weight of the weight itself is irreplaceable by plastics.

1. Material differences:

Die-cast aluminum alloys generally use ADC12 or ALsi9cu3, while automotive aluminum generally uses 6063 or 6061.

2. The difference in appearance:

Die-cast aluminum is equivalent to plastic injection molding process, and can be manufactured in any shape. The outer casing of the street lamp is generally made of die-cast aluminum. The shape of the equal section of the car aluminum has a small change, such as the heat sink of the bulb, the aluminum profile of the door and window.

3. Thermal conductivity:

The general conductivity of die-cast aluminum is about 80-90W/M.K, while the thermal conductivity of aluminum is about 180-190W/M.K.

4. Cost:

The cost of die castings and aluminum is relatively high, calculated by weight and machining. Calculate costs based on real-time material prices and labor. Relatively speaking, the cost of die-cast aluminum is higher, but the specific situation should be analyzed.

5. Production efficiency:

The production efficiency of injection molding is definitely higher. In batch production, it is generally produced more than 1,000 a day, and the size is stable, and the shrinkage rate is 0.5%. There are more components in the aluminum machine processing. As the name suggests, it is the aluminum of the car, and the efficiency is naturally lower.

6. Application:

Die-cast aluminum is widely used in automobiles, street lamps and the current mobile phone industry. The aluminum is widely used in downlights, ceiling lamps, doors and windows.


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