Gravity Castings

Our low mold cost gravity castings will help with your project has heat treatment requirement or budget limitation.


ISO 9001:2015

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Gravity Die Casting is a low-pressure method that utilizes the natural force of gravity to poure molten metal into the mould and form the shape. The mould cavity fills with only gravity, sand cores are usually used to incorporate cavities into the component form.

Our gravity casting parts are commonly used for:

  • Engine parts

  • Heat exchangers

  • Marine pumps

SUNTECH Gravity Cast Capabilities

Maximum Weight


Casting Tolerances

  • ISO2768 mk

Surface Treatments for Gravity Casts

Surface treatments for gravity casts involve a variety of techniques that are used to modify and improve the characteristics of the surface of the casted part. These treatments include polishing, powder coating and painting.

Surface Treatments: Polishing
Material: Aluminum

Surface Treatments: Polishing
Material: Aluminum

Gravity Casting Parts Materials

Gravity casting is suitable for casting materials such as aluminum, copper, and magnesium alloys. The molds used in gravity casting are generally made from steel, iron, or graphite, and the process enables the manufacture of intricately designed parts with minimal wastage.


  • Aluminum

  • Aluminum Alloy

  • Zinc

  • Zinc Alloy

  • Titanium

  • Magnesium


  • Stainless Steel

  • Cabron Steel

  • Mild Steel
  • Brass
  • Copper

  • Inconel

About Gravity Castings Work

Gravity Die Casting gives a better surface finish than sand casting as well as better mechanical properties, both due to rapid solidification. Gravity casting is widely used in industry due to its cost-effectiveness.

Gravity Casting Workshop

Take a quick tour through our Gravity Casting Workshop to see how the parts were produced.