Finding a reliable sand casting company in the United States doesn’t need to be difficult or expensive. Redstone Manufacturing has sand casting facilities in China, Mexico, India, Taiwan, and Brazil. We help you secure the best rates and lead time for your sand casting job. Our headquarters in the United States means we are dedicated to quality and meet ISO9001 standards. We help companies reduce the risk of working with foreign manufacturers, while lowering costs.

What Products are Made from Sand Casting?

Compared with other casting methods, sand casting is ideal for large-part production. This method offers engineers a variety of metal alloy options and part size options at an affordable manufacturing price. Additionally, sand casting has a low setup cost and is inexpensive to make mold modifications. This is the preferred casting method of the aerospace industry, and others such as construction, automotive, manufacturing, and even marine industries use sand casting.

Common Products &
Use Cases of Sand Casting

  • Engine blocks
  • Pipes
  • Nuts
  • Landing gear
  • Pulleys
  • Cylinder heads
  • Aerospace components
  • Machine tool bases


Both methods have been around for centuries, but the final product will dictate which option is best to use.

Sand Casting Services

  • A range of different parts or several of the same part may share a mold.
  • New molds are easy to remake.
  • Higher casting weight limit.
  • Greater ease of changing design.
  • Difficult to cast parts with internal voids.

Investment Casting Services

  • Ceramic mold (initial investment) is destroyed to get parts.
  • Better equipped to make small, intricate parts.
  • More complex and labor-intensive.
  • Hundreds of small parts can be cast at once.
  • Excellent surface finish.
  • Greater design freedom.


Sand casting is widely used because of its ability to cast metals that have high melting temperatures, low cost, and flexible production options. Unlike other casting options, sand casting is an affordable way to cast larger parts without expensive machining costs. 

Both sand casting and investing casting have been around for ages. Investment casting is typically used when an engineer or designer needs smaller parts with intricate details. Sand casting allows for the production or larger, heavier parts and at a lower cost. Investment casting tends to be more labor-intensive since mold creation requires more steps prior to casting and additional machining steps after the metal has cooled. 

Out of the most widely used metal casting methods, sand casting is the least expensive for smaller batch runs. It is also a cost-effective model for large part production

The three types of sand used for sand casting are Green Sand, Silica Sand, and Resin sand. Sand casting with green sand is fast and inexpensive because sand is able to be reused for later castings. Its soft, reusable properties also mean the mold can shift or collapse during the casting process. Silica sand is a good choice because it can quickly turn from liquid to solid. Casting with silica requires more time because of additional steps to break down the mold after the metal has cooled. Resin sand allows for a smooth surface mold, which translates to fewer defective parts. This sand also comes with slower casting time and higher cost.


Redstone’s Manufacturing’s sand casting services can utilize seven different metal material types – grey iron, ductile iron, stainless steel, alloy steel, carbon steel, aluminum, and copper.

Grey Iron
Sand Casting

Grey iron gets its name from the color of the fracture. It’s commonly used for sand casting because of its good machinability and nominal cost.

Ductile Iron
Sand Casting

Ductile iron sand castings are strong and well known for its impact and fatigue resistance. Its round graphite inclusions add its ductility and inhibit cracks throughout a part’s life.

Stainless Steel
Sand Casting

Stainless steel is a popular option for industries that need parts that are both durable and stand up to corrosion. Under most applications, this metal has the ability to retain its qualities without additional plating or coating.

Alloy Steel
Sand Casting

Low-alloy steel contains varying amounts of different elements that enhance the qualities needed for each part’s intended use. Alloy steels are tough and wear-resistant and are able to withstand high temperatures making it an excellent choice for industrial applications.

Carbon Steel
Sand Casting

Carbon steel gains its strength from added carbon and is well known for its durability. It is incredibly corrosion-resistant, and these parts have a long shelf life when properly protected and maintained.

aluminum die cast

Sand Casting

Aluminum is among the most popular metals used for casting because of its unique ability to create both strong and lightweight parts. Depending on its alloy composition, aluminum is a reasonably priced option compared to other metals with similar properties.

copper die cast

Sand Casting

Brass sand cast parts are commonly used in the construction industry because of its attractive finishing options and, more importantly, its resistance to corrosion and rust.

We were looking for a manufacturing expert in China and Redstone was able to provide complex components and assemblies quickly and with impeccable quality. We value our relationship with Redstone and view them as an extension of our own company.
Redstone Manufacturing produces metal injection molded steel parts for us. These are high-precision components with a tolerance less than half a thousandth of an inch. Redstone is a bankable supplier; they deliver quality parts on time.”

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