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CNC Machining Cast Iron Service

DEK specializes in the machining of all types of metals, providing you with high-quality custom cast iron parts. We use advanced CNC lathes and CNC milling centers as well as proven machining techniques to produce parts with tight tolerances up to +/- 0.005mm, producing simple to complex geometric shapes for your projects, and providing the surface finishes you need such as anodizing, electroplating, bead blasting, powder coating and so on. We are the preferred partner for a wide variety of industries.

ISO 9001:2015, ISO 13485, and AS9100D certified.

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Custom Cast Iron Parts in CNC Machining

Cast iron is an iron-carbon alloy with a carbon content generally between 2% and 4%, in addition to silicon, manganese, phosphorus, sulfur and other elements. It has high hardness and good wear resistance, good corrosion resistance, easy to cast and form, and low cost.

DEK's machine shop produces custom cast iron parts using the latest CNC lathes and CNC milling centers with 3-, 4- and 5-axis. Whether it's prototyping or mass production, DEK will always meet your diverse needs, machining to tight tolerances of +/-0.005mm.

DEK is a trusted and affordable manufacturer of custom cast iron parts, and our quality services ensure high precision parts for the construction, manufacturing, and automotive industries, perfect for engine blocks, valves, and equipment housings. With our CNC machined cast iron services, you can also choose from anodizing, plating, sandblasting, powder coating, and other finishes. If you want a one-stop shop for customized cast iron parts, contact us today!

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Cast Iron Material List


Basic Knowledge of Cast Iron

What is Cast Iron?

Cast iron is made by melting iron and adding a small amount of carbon, typically between 2% and 4%. This alloy is then poured into molds to create various products. Cast iron has exceptional durability and heat retention.

It is commonly used for cookware. Despite being heavy, cast iron cookware is valued for its longevity, with well-maintained pieces lasting for generations. Proper care, including avoiding harsh detergents and ensuring thorough drying, is important to prevent rust and maintain its quality.

Advantages of Cast Iron


High heat retention

Versatile cooking surface

Long lifespan

Even heat distribution

Adds iron to food during cooking.

Applications of Cast lron

Engine blocks


Manhole covers

Brake rotors

Sewer pipes



Machining Cast Iron Buying FAQ

There are 5 main types of cast iron: gray cast iron, ductile cast iron, white cast iron, malleable cast iron and alloy cast iron.
Cast iron is generally more brittle than steel, but it can be more resistant to wear in certain applications. Strength depends on the specific alloy and heat treatment.
Check for a rough surface, weight, and lack of a shiny coating. Cast iron pans are also prone to rust if not properly seasoned.
Yes, cast iron is magnetic, so a magnet will stick to it. This is a quick test to determine if a pan is made of cast iron.
Cast iron can be welded, but it's a challenging process due to its high carbon content. It often requires preheating and post-weld treatments.

Other Materials


Stainless Steel

Stainless steel is durable, corrosion-resistant, and visually appealing. It's widely used because of its strength, low maintenance, and ability to withstand various temperatures and chemicals.

More info about Stainless Steel
Aluminum-cnc-machine parts


Aluminum is one of the most commonly used metals in the world because of its excellent strength-to-weight ratio, low cost, and recyclability.

More info about Aluminum

Alloy Steel

Powerful than carbon steel, more wear-resistant, more tear-resistant. Alloy steel is durable and can withstand high-temperature environments.

More info about Alloy Steel

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