+86 15986630581
How to choose the die casting?
Home » News » How to choose the die casting?

How to choose the die casting?

Views: 225     Author: Wendy     Publish Time: 2023-04-17      Origin: Site Inquire

How to choose the die casting?

Types of Alloys Used in Die-Castings


Due to its propensity for cracking or shrinking at high temperatures, aluminum is frequently alloyed with silicon or copper when used in die casting. Aluminum's hardness and fluidity are significantly increased when combined with these metals. Aluminum is utilized to make components with thin walls and complicated forms because of its great dimensional stability. Aluminum is advantageous in components that will be exposed to thermal or electrical energy because of its resistance to corrosion.


Copper-based alloys are also commonly employed in die casting. Many of these alloys are quite durable, making them an effective choice for mechanical products. Due to copper’s very high resistance to corrosion, it is often used to create plumbing and electrical materials.


Due to its great strength at ambient temperature, zinc die casting is a very simple process, although it may be alloyed with aluminum to further enhance these attributes. Zinc is appropriate for hot-chamber casting because it has a lower melting point than aluminum. Additionally, it is useful in the production of items like connectors and gears that need to be strong and precise.


Magnesium has a high strength-to-weight ratio despite being a relatively light alloy, and it is useful for die-casting operations that require thinly structured walls and close precision.

Considerations When Choosing Die-Casting Alloys

Die casting alloy choice will be determined by the end product's application and function. For instance, an alloy based on aluminum or copper can be a good option if the component has to be highly durable and resistant to corrosion. Production volume is another factor. With adequate care, zinc molds may last up to one million cycles before needing to be changed, whereas aluminum die-casts can last around 100,000 cycles. Utilizing alloys that extend the molds' useful lives may be more cost-effective for long-term, high-volume manufacturing.

Examining the benefits and drawbacks of a die-casting process might be helpful when weighing other production techniques.

Potential advantages include:

Dimensional Strength: die-casting parts are stronger than plastic components.

Rapid Production: die-cast components can be produced in high volume with relatively little tooling or machining.

Smooth Surfaces: the die-cast process can create finished parts with curved or seamless surfaces.

Accuracy: die-casting parts can be created with close adherence to specifications.

Possible disadvantages include:

High Volume: smaller production runs may reduce cost-effectiveness.

Limited Metal Fluidity: alloy malleability varies, which can limit the complexity and shape of the finished product.

Size and Weight Limits: a casting machine’s capacity limits the range of product dimensions.


Die casting is a very effective manufacturing process to produce parts that have accurate dimensions and sharp definition in large quantities, made possible using reusable metal dies.