Gray Iron Sand Castings

Gray iron sand castings, a  process that is an easy and economical method to create basic part shape. The advantages to this process is the cost savings to achieve the basic part shape, and the flexibility in the size of sand castings. These castings can be less than one pound to several tons. Another advantage to off shore sourcing for grey iron casting is not only will you save on the cost of the casting, but also on the cost of the secondary machining and finishing.

The disadvantage to production method is the accuracy of the castings. The dimensional accuracy is not as good as other casting methods, and the parts will have a rough surface finish (300-560 RMS). This is why most sand castings will need additional processing to be completed.


  • Low cost tooling (patterns)
  • Good Flexibility in size and weight
  • Fast & simple


  • Can only produce basic shapes
  • Can not hold tight dimensional accuracy
  • Rouge surface finish

We have been out sourcing precision OEM parts for over 50 years. Prosna already has strong long term relationships with several proven off shore foundries. Let our global experience work for you, and begin enjoying the benefits of a global supply chain.