Different Materials Used In Investment Casting

Different Materials Used In Investment Casting

Investment casting is a versatile and adaptable process. However, there are certain materials to choose from depending on the item under production. The right materials can help you realize the functionality you’re aiming for while minimizing the material prices, removing casting defects, and reducing the amount of time it takes to do the final casting process.

It is heavily essential to select the optimal manufacturers of investment castings India. Let’s have a glance at various investment casting materials today.

Stainless Steel

Stainless steels are far more resilient than most other materials. Investment casting has been popular for its application in producing designer and engineer-created items, thanks to the material’s unique possibilities. Automobile gearbox parts, cranks, camp components, and golf club heads all use stainless steel.

Low Alloy Steel

Mechanical applications using low alloy steels due to their low cost and useful mechanical attributes are under development. A sophisticated heat-treating methodology enables the engineering of components of various characteristics in the different sections of the same work.

Manufacturer of investment castings India may accomplish the heat-treating methodology, for example, treating one surface to make it robust and impact-resistant while the other turns wear-resistant.


Aluminum Alloy

Aluminum is one of the lightest metals on earth, it is nearly three times lighter than iron, but it is quite powerful. It could be heat treated to enhance strength, flexibility, oxidation resistance, and machinability. Aluminum is famous for its high strength-to-weight ratio.

To create components such as Heat Sinks, Valves, Medical equipment, Devices Levers, and Pistol Frames, we employ resistance melting and rigorous degassing processes to cast aluminum in NDT levels up to Class 1 Grade A (Grade B for manufacturing).

Because of the increased strength of the material and the availability of high-quality castings manufactured from aluminum-silicon-magnesium alloy by manufacturers of investment casting in India, castings are now available for demanding applications such as aircraft components.

Aluminum alloy remains the most popular investment casting material. Aerospace, avionics, electronics, and military are among the domains that use it the most.

Cast Aluminum

This investment casting material is also valuable in creating motorized components for ground automobiles and watercraft and kitchenware and furnishings by using die casting and mold casting processes such as connecting rods, pistons, fittings, etc. Coolant chambers and other vital products.

Cast aluminum is a distinctive metal that has experienced one of the many casting processes. It is essentially established when processes such as die-casting, form casting, or grit molding are employed to temper aluminum to produce components for various product kinds.  Investment casting manufacturers in India consider this kind of aluminum for manufacturing certain articles around the household, machinery, and other products required to produce a wide variety of commodities and services.

One of the primary advantages of utilizing cast aluminum is that it is typically cost-effective compared to other casting materials. The metal remains quite durable as well. Although it is not always true that it will last as much as cast iron, aluminum goods tend to stand up well for a handful of years in some situations. The blend of reduced cost and proven durability makes metal a great alternative for many aluminum casts used domestically and commercially.

Aluminum cast: ADC-12, A356, A380, ZL104.

Carbon Steel

Manufacturers of investment castings India use carbon steel, a relatively low alloy in several grades, and the grades vary according to the carbon content in the material. Most steel varieties have a comparatively low carbon concentration of around 0.05% to 0.3%.

Carbon steel has a carbon concentration of up to 2.5%. In industry sectors, heat treatment might increase carbon steel’s tensile strength, flexibility, and efficiency. The ferromagnetic properties of carbon steel are idle in machinery and electrical equipment production.

Carbon steel is a typical material for various purposes as it is inexpensive and can be used in various grades to enhance resilience, toughness, and machinability by heating. Investment casting manufacturers in India use a range of alloys to produce tailor-made carbon steel components, such as Door locks and internal locking systems, Gun triggers, hammers and crosshairs, Mining and transport critical components, and further.

Super Alloy

Investment casting manufacturers in India produce nickel and cobalt superalloys that are not new in the aviation, power, healthcare, chemical, and naval sectors. In India, nickel-based alloys from investment casting manufacturers are sturdier at high heat, but cobalt-based alloys outperform nickel-based alloys in oxidation, degradation, and abrasion resistance. Because superalloys provide great stiffness and excellent service qualities while being a cost-effective choice, they rapidly overtake sheet metal.

Copper Alloy

Copper-based alloys have a low rate of attrition and are chemically stable. Ship or pump shafts, electronic parts, and piping components are all examples of where they’re employed.

Two of the most prevalent copper-based alloys of investment casting manufacturers in India are brass and bronze. The toughest copper alloy is beryllium-copper, which has characteristics similar to high-strength alloy steels but has better-protracted oxidation resistance.

Cast Iron

Gray iron and ductile iron are under consideration for processing iron castings, renowned for their excellent precision and low cost. Ductile iron has immense strength, flame retardancy, and resilience, but its manufacturing process is more complicated than other steels and, hence, more expensive than cast steel.


Gray iron and ductile iron are the most commonly used varieties of cast iron. Iron castings with more than 2% carbon concentrations are under manufacturing process with various investment casting materials.

Prominent grey grades of iron: HT150, HT200, HT250, HT300, HT350.

Superior iron ductile grades: QT400-15, QT400-18, QT450-10, QT500-7, QT600-9.

Brass and Bronze

Both brass and bronze are machinable and resilient to oxidation, are non-sparing, lack magnetic properties, and give distinct wear and attractiveness. Brass and bronze investment molded parts provide strict tolerances and remarkable partial dependability comprising Propeller, Door handles, and complete basin installations.


Manufacturers of investment castings India have varied characteristics and applications. Therefore, you must select the appropriate casting material. Ultimately, efficient material selection will assist you in accomplishing your intended design efficiency while lowering wastage of resources and expenses.

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About the Author: Vijay Aegis

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