When it comes to making your parts, you have a major decision to make. Should you make your parts using plastic injection molding or aluminum die casting? To help you decide, let’s look at the major advantages and disadvantages of each.

What Is Die Casting vs. Injection Molding?

The process of making a part is basically the same whether you are using die casting or injection molding. You create a die or mold in the form of the part you want to create. You then liquify the material and use extreme pressure to inject it into the die/mold. You then cool the die/mold with internal cooling lines and die spray on the die cavities. Finally, you open the die and remove the shot.

Although there are some variations in technique, the major difference between die casting and injection molding is that die casting uses some kind of metal, often an aluminum alloy, as the raw material, while injection molding uses plastic or polymers.

Which should you use? It should be apparent right away that if you use injection molding, you are going to end up with plastic parts and if you use die casting, you are going to end up with metal parts. If you know what sort of parts you want to end up with, you know right away which to use. But if you’re not sure which material is better for you and your company’s products, read on.

Benefits of Plastic Injection Molding

If the speed of production is your top priority, you may be more inclined to consider plastic injection molding. The plastic injection molding process gives you more flexibility in your design process and allows you to produce more products in less time.

Your plastic injection mold can also accommodate different plastic or polymer materials, unlike a die casting die, which might use just aluminum or zinc alloy. You can also use fillers in plastic molds to increase product strength.

Plastic injection molding is an efficient way to produce multiple products with very accurate finishes. However, there are some very important benefits to aluminum die casting that make it a practical consideration.

Benefits of Aluminum Die Casting

With the right machines, such as the type Premier Die Casting employs, you can produce many products in a short amount of time with a high degree of accuracy with aluminum die casting as well. There is usually no need for secondary operations and you have the capacity to produce complicated designs that can be cast close to net shape.

In general, you will find that aluminum die casting produces a higher-quality product, with better tolerance, that lasts much longer than a plastic part.

Aluminum Die Casting vs. Injection Molding

So why would you choose injection molding over die casting? If you are looking to produce a lot of parts very inexpensively, injection molding might be the way to go, as labor and material costs are fairly light, although it is important to keep in mind that the cost of the plastic injection molding machines themselves and any secondary equipment can be fairly expensive.

If accuracy in design is a high priority, or you are looking to make many complex parts in a short time frame, die casting is almost always the preferred option. Even if you are designing simpler parts, many people prefer the obvious feeling of durability and quality you get in a solid metal part over a plastic part.

Contact Premier Die Casting for All of Your Aluminum Die Casting Needs

Once you have decided that aluminum die casting is the way to go for all your part manufacture needs, the next step is to contact Premier Die Casting. We have been bringing great part designs to life for over 70 years with state-of-the-art equipment and highly trained engineers, making sure you get the best possible product manufactured in the most efficient way possible.

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