Stainless Steel Investment Casting

Stainless Steel Investment Casting: A Comprehensive Guide

If you’re in need of precise product dimensions, or intricate shapes that are challenging to manufacture using traditional methods, or if you require bulk production with diverse alloy material specifications, we recommend stainless steel investment casting. It’s a high-precision casting technique and stands out as one of the most suitable manufacturing methods available.

Stainless Steel Investment Casting


What is Stainless Steel Investment Casting?

Stainless steel precision casting, also referred to as investment casting, it’s a kind of casting manufacturing process. It employs a wax pattern created through 3D or CAD design. This pattern is then coated with a mixture of silica sol or sodium silicate binder and different grades of sand for shell molding. This meticulous process results in castings with impeccable surface finish and precise dimensional tolerances. What sets this method apart is its avoidance of extremely high temperatures during casting, making it ideal for manufacturing components for high-precision industries like aerospace and defense.

What is the Process for Stainless Steel Investment Casting?

 The process of investment casting includes steps such as Tooling design, injection of wax, and so on, you will see the details from the chart as follows:

What is the Process for Stainless Steel Investment Casting


What Industries Request Investment Casting Parts?

With excellent corrosion resistance, high strength, and easy maintenance and cleaning, stainless steel castings are extensively used in the following industries:


Automotive Industry

Pump manufacturers

Food industry

Pharmaceutical industry 

Shipbuilding Industry

Chemical Industry


What are the key features and advantages of stainless steel precision casting that users should be aware of?

What are the key features and advantages of stainless steel precision casting that users should be aware of

High dimensional accuracy and fine surface finish: 

Stainless steel precision castings boast exceptional dimensional accuracy, achieving grades of 4-6, and offer surface roughness ranging from 0.4 to 3.2 micrometers. This reduces the need for extensive machining.

Ability to cast intricate and challenging shapes:

 This method can produce components with complex shapes that are difficult to achieve through other manufacturing processes. From small-scale dimensions of a few millimeters to large-scale dimensions exceeding a thousand millimeters, and with wall thicknesses as thin as 0.5mm and minimum hole diameters below 1.0mm.

High production flexibility and adaptability

 Stainless steel precision casting is versatile, catering to both large-scale production runs and smaller batches or even individual pieces.


How is the investment casting different from the conventional casting?

The essence of investment casting versus conventional casting can be likened to the difference between finely crafted jade and rugged stone.

In terms of material selection

investment casting demands top-notch raw materials, often opting for high-quality alloy materials to ensure the resulting products boast superior mechanical properties and corrosion resistance. Conversely, conventional casting has lower material requirements, focusing more on cost efficiency and production speed.

In casting techniques

 Investment casting employs cutting-edge precision molding technologies such as investment casting and precision die casting. These techniques ensure precise dimensional accuracy and a high-quality surface finish for castings. In contrast, conventional casting relies more on traditional methods like sand casting and metal mold casting, resulting in lower casting precision and surface quality.

Investment casting involves meticulous post-processing

Investment casting often requires procedures such as heat treatment, precision grinding, and polishing to further enhance product performance and aesthetics. Conversely, conventional casting typically involves simple cleaning and rough machining after casting completion.


What Grade of Stainless Steel Investment Casting Can Manufacturing Factory Provide?

Manufacturing factory can recommend the best solutions based on your product performance and application requirements, Below are the Stainless Steel alloy scope we normally cast in the factory but not limited to:

Austenitic Stainless Steels Grades

Austenitic Stainless Steels

Steel Grade characteristics applications


Good corrosion resistant 
  • Medical
  • Mining
  • Food and Dairy
  • Petrochemical
  • Automotive
  • Valves

Ferritic/Martensitic Stainless Steel Grades 

FerriticMartensitic Stainless Steel

Steel Grade characteristics applications



Good yield strength
  • Automotive
  • Machine tool
  • Food and Dairy
  • Petrochemical
  • Medical

(Duplex) Stainless Steel Grades

Steel Grade characteristics applications


better corrosion resistant and high strength 
  • Chemical processing & storage
  • Oil & gas exploration
  • Cargo tanks
  • Food & dairy
  • Marine Accessories


Overall, stainless steel precision casting offers superior precision, versatility, and adaptability, making it a preferred choice for various industries, For any others you want to know about investment casting, please contact BT for more information. 




How to find the best Stainless Steel investment casting suppliers?

How to find the best Stainless Steel investment casting suppliers

The suppliers should have good casting equipment to ensure product quality and precision. Additionally, their technical team should be experienced and capable of providing customized solutions based on customer needs.

The suppliers should have a robust quality management system, They should be able to respond promptly to customer needs and provide professional technical support and after-sales service.

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