Stainless Steel Casting
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Besser is one of the largest stainless steel casting manufacturers and suppliers in China. With our 21 years of expertise in stainless steel casting, we can provide you with custom stainless steel castings to meet your precise design specifications and any desired grade.

What is Stainless Steel Investment Castings

Stainless steel investment casting is a dewaxing investment casting process in which molten stainless steel material is poured into a mold and allowed to solidify, resulting in a solid stainless steel casting in the desired shape. When we have requirements for the properties and corrosion resistance of steel. Stainless steel castings are a better choice.

Advantages of Stainless Steel Castings
01  Superior corrosion resistance
02  Excellent surface finish
03  High dimensional accuracy
04  Extremely intricate parts are castable
05  Almost any metal can be cast
06  No flash or parting lines
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World-class Large Stainless Steel Investment Casting Foundry

Cooperated with More Than 400 Customers

Compliant with EU standards, the preferred supplier for SMEs

Ningbo Besser Casting Co., Ltd. is a world-class, high-integrity modern steel casting company producing carbon, low alloy, duplex, austenitic, super austenitic, martensitic alloy, and steel castings. As a top steel casting company in China, we specialize in corrosion-resistant alloys. In fact, Besser Foundry can produce over 200 different metal grades.

Our team strives to provide high-quality steel castings for your production line. We are pleased to supply fully machined castings from our extensive on-site machine shop. In addition to machining small to large castings, we also offer X-ray inspection, ultrasonic inspection, and polishing services, among others.

Looking for a reliable stainless steel foundry to meet your corrosion-resistant casting needs? We are your trusted stainless steel casting manufacturer.



How are Stainless Steel Investment Castings Made?

How do we grow your business?

Mold Development
We have state-of-the-art spectrometers to ensure the correct Mechanical Properties of metal alloys
Northern Lights
Wax Pattern Making
Extrude medium-temperature wax into the mold with a wax injection machine to make a product wax model.
De-burring the Wax Pattern
Carry out a comprehensive inspection and trimming of the wax model to ensure that it meets the product standard.
Wax Pattern Tree Welding
According to the designed casting system, the wax patterns are welded to the wax rods
Shell Making
Shell Making
Make a shell on the surface of the wax model.
Northern Lights
Baking Shells
Put into the roasting furnace to heat the shell.
The molten steel is poured into the formed shell.
Cutting Down the Products
Cut the finished product with tools and process it


Our Representative Stainless Steel Materials

304 Housings, bodies. SS304 is widely used in medical, plumbing, watering, mining and petrochemical industries as the standard for cleanliness as well as corrosion resistance.
316 The second most common austenite steel, also referred to as A4 stainless. SS316 is used primarily for its increased resistance to corrosion.
304L / 316L Lower carbon content than 316 stainless steel, which reduces the sensitization effect caused by the high temperatures involved in welding. Besides, it shows better resistance to stress-corrosion cracking.
410 & 416 Housings, bushings, handles, brackets. 400 series steels are high strength and very machinable. They will tend to break rather than bend under intense pressure. Ideal industries are automotive, food & dairy and various machine tools.
17-4 PH Most common precipitation-hardening martensitic stainless steel, which uses about 17% chromium and 4% nickel.


Stainless Steel Investment Castings Services for Your Project


Investment Casting Services

Selecting the correct manufacturing method for your product order is critical. Lost wax investment casting is the right choice when you need high precision, complex parts.

This method proves to be cost-effective as it requires fewer separate processes, saving both time and money during production. Moreover, the resulting parts boast smooth surfaces that replicate the mold's texture precisely, minimizing the occurrence of defects and enhancing overall quality.

Surface Treatment Services

cnc machining service

Machining Services

Our state-of-the-art facilities and equipment allow us to offer our clients comprehensive machining services including milling, turning, boring, grinding, drilling, wire cutting, and more. With ongoing investment, today Besser is equipped with 14 first-class high-precision 4-axial CNC machining centers, CNC gantry milling & boring machine, CNC horizontal & vertical lathes, CNC honing machine, and CNC deep-hole internal grinders as well as many other conventional equipment.


Surface Treatment Services

We offer various types of surface treatments to enhance the performance, wear resistance and service life of the metal components we produce.

● Shot blasting ● Sand blasting
● Vibration grinding ● Electro-galvanizing
● Pickling and passivation ● Electropolishing
● Phosphating treatment ● Blackening treatment
● Brush polishing ● Mirror polishing

Surface Treatment Services


Stainless Steel Investment Casting Products We Have Made for Our Customers

Besser handles each job with an optimal process to achieve the lowest cost, best quality, and highest efficiency.



See How We Guarantee Your Product Quality

Chemical Composition
Chemical Composition
We have state-of-the-art spectrometers to ensure the correct Mechanical Properties of metal alloys
Dimension Tolerance
Dimension Tolerance
Our engineers use instrument (coordinate measuring machine) inspection to help you inspect your parts better.
Mechanical Properties
Mechanical Properties
Castings are subjected to various mechanical tests such as hardness testing, tensile testing, and load testing.
Casting Defects
Casting Defects
Check for all surface problems, including surface defects such as scale, cracks, pores, shrinkage cavities, and air bubbles.


To Provide Our Customers with the Best Stainless Steel Investment Castings Solutions

besser factory

About Besser

World-Class Stainless Steel Casting Foundry

Besser was established in 2002 and has about 200 professional and technical personnel. We have obtained have obtained IATF16949:2016 and ISO90001:2015 certifications. Besser has a machine shop for secondary operations. The tolerances of metal castings can be tightly controlled. Today, Besser has become a leading casting brand in China's investment casting industry.


Start A Cast Stainless Steel Project With Besser Foundry

As a first-class stainless steel casting manufacturer, we can help you find the right alloy for your stainless steel casting requirements using our on-site spectrometers. We can also fabricate custom stainless steel investment castings to your exact design specifications. For parts from 30 grams to 200 kg or more, we offer tight tolerances and consistent part repeatability.

If you would like to learn more about our stainless steel casting services and receive a free quote for your upcoming project, please contact our stainless steel foundry today.


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FAQ of Stainless Steel Investment Castings


Q1: What is the stainless steel investment casting process?

A: Stainless steel investment casting is a manufacturing process used to create complex metal parts in a wide range of shapes and sizes. It involves pouring molten stainless steel into a ceramic shell or mold, which is created by coating a wax pattern with a ceramic material.

Q2: What are the advantages of stainless steel castings?

A: Corrosion resistant, suitable for fasteners in harsh environments. Heat resistance, excellent performance at high temperatures.
Precision tolerances not possible with other manufacturing processes.
It has simple structure, stable performance and durability.

Q3: Why is investment casting preferred for stainless steel materials?

A: Stainless steel is used because of its unique physical properties. It has excellent corrosion resistance, wear resistance and heat resistance. Therefore, it can be used in a variety of industries, especially those that require materials that can withstand harsh environments

Q4: What factors affect the cost of stainless steel investment casting?

A: Price of raw materials, complexity of part design, weight and dimensions of castings, quantity of order. The price of stainless steel raw materials is the main factor affecting casting costs.

Q5: How is our stainless steel investment casting performed?

1. Wax Model Making & Assembly

Once the mold is ready, inject wax material into the mold cavity, then take out the wax model from the mold after cooling. Repair some appearance defects of wax models, such as slot, wax injection nozzle, flow pattern, etc. After inspection wax models, weld them to the casting system one by one to form a assembly, which looks like a tree.

2. Shell Building

Shell making process is a whole silica sol process, namely dip the assembly into good colloidal silica coating, sprinkle with fire-resistant sand, dry and harden shell under certain temperature,thus to form dense refractory coating surface outside the surface of wax models, and then repeat the step 5-6, finally form a certain strength and refractoriness of silica sol shell.

3. Dewaxing

Dewaxing is a process in which the wax inside the shell is melted by high temperature steam and then drained out, resulting in a cavity that can be poured into the mold.

4. Pouring

Melt stainless steel ingots into liquid status under a certain high temperature, then pour the liquid into the shell and cool under room temperature. After solidification, knock out the blacks and clean sand.

5. Cutting,Grinding & Surface Finishing

Cut the stainless steel casting blanks from assembly one by one, remove the sprue gate by grinding machine and smooth the surface by various surface finishes, such as shot blasting, sand blasting, electropolishing, mirror polishing, etc.

6. Inspection

After finishing production, inspection is also an indispensable process before delivery. The inspection of stainless steel castings includes dimensional inspection, defects inspection and material inspection. Only qualified products can be shipped to customers.

Watch our stainless steel foundry video to learn how stainless steel castings are made. Videos are also available on

Q6: When to Use Stainless Steel Investment Casting?

You’ll get the most significant advantage from using investment castings if your part:

  • has a complicated shape that would be difficult or impossible to produce with other casting methods
  • requires exceptional surface qualities
  • needs tight tolerances
  • prefers minimal surface finishing or machining after casting.

Q7: Why Choose Besser's Stainless Steel Investment Casting Services

  • Affordable Tooling: Tooling is the basic step to starting the stainless steel casting process. Although the machining accuracy and material of tooling play an important role in the final casting quality, the tooling of stainless steel is relatively affordable compared with other forming processes.
  • Flexible design: Investment casting can cast out stainless steel products in different sizes and weights, so the design of cast stainless steel parts is very flexible. Stainless steel casting allows parts with a minimum 3mm thickness and weights ranging from 0.05kgs-80kgs. Besides, stainless steel castings with complex structures are also castable.
  • Close Tolerance: The dimensional accuracy of stainless steel investment casting can meet ISO 8062 CT5-CT6 level. Such close tolerance can ensure stainless steel castings with less or no machining.
  • Good Surface: Even after shot blasting, the surface of stainless steel castings is very smooth and looks bright. And people will never worry about stainless steel castings will get rust with time flys.
  • High Production Efficiency: Stainless steel casting is a fast and repeatable process, so the production efficiency is very high, and no matter it is a large or small volume, it can all meet.


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