Vacuum Die Casting Advantages and Disadvantages

Vacuum pressure casting can be a great choice for building high-volume identical parts. Also known as vacuum die casting, it can produce products with complex geometries using a process that removes all gasses and air from the die before introducing the molten material. This way, it produces less porous parts with better quality and consistent mechanical performance.

Understanding the pros and cons of vacuum die casting can help businesses determine if it’s right for their projects. This blog will discuss them here.


  • Create better parts

    Vacuum die casting delivers minimally porous parts suitable for welding or heat treatment. Moreover, the process is flexible for mass-producing identical parts, even those with complex shapes and features. In addition, results have better surface finishes and dimensional accuracy.

  • Low production costs

    Vacuum pressure casting costs significantly less than CNC machining, especially for high-volume production. Plus, it reduces material waste.

  • Faster turnaround

    Reputable manufacturers can prepare the mold as soon as the pattern is ready. Plus, one mold is enough to ensure continuous production and save time.

  • Uniform quality

    Vacuum die casting ensures the same finishing, shape, size, thickness, and other properties for a part every time. If better surface quality is required, manufacturers can pre-process the mold or pattern via CNC or 3D printing and post-process the cast parts with polishing, painting, and other finishing methods.


  • Costs vary

    The cost of vacuum pressure casting will depend on the materials used and the number of parts to be produced. In addition, there could be extra costs for pre- and post-processing.

  • Risk of pattern glitches

    Parts are easier to check for flaws after CNC machining or 3D printing. That is not the case with vacuum die casting because the results depend on the quality of the pattern or mold. So, a faulty or flawed mold can lead to longer production times and higher costs.

Generally, vacuum pressure casting has more benefits than drawbacks. As long as the part is well-designed and not too complex or thick, it can be a good option for manufacturing end-use parts or prototypes. Working with an experienced manufacturer like HLH Proto is always recommended. Our experts can provide design tips and a free project review.





Industry InsightsDownloadsQA/QCDesign Tips


CNC Machining ServicesDie CastingRapid Injection Molding3D PrintingSheet MetalVacuum Casting


Aerospace & UAVAutomotiveCommunicationsConsumer ProductsIndustrialMedical
Product DevelopmentRobotics & Automation


CNC Machining ServicesDie CastingExport ToolingRapid Injection MoldingLow Volume Manufacturing Whitepaper


Room 1231, Wanjiali International Mall, Wanjiali Middle Road No.99, Furong District,Changsha,Hunan province,China,410016