Stainless Steel Casting

Dawang Steel Castings Co., Ltd. has more than 25 years of experience in the stainless steel casting industry and provides high-quality investment casting stainless steel for customers. Seeking affordable stainless steel casting manufacturers? Do not hesitate to contact us.

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Capabilities of Stainless Steel Casting Service

Stainless steel casting is the manufacturing method to pour molten stainless steel into molds, allowing it to craft custom stainless steel components. We can offer a wide selection of stainless steel casting service used in many industries, such as constructional machinery, marine, oil & gas, automotive, or other large equipment sectors. We offer both stainless steel investment casting and stainless steel sand casting process, which give you the flexibility to cast stainless steel parts of various requirements.

  • MaxSize: 200cm x 200cm
  • Weight Range: 0.1 kg – 2t
  • Annual Capacity: 2,400 tons
  • Bond Materials for Shell Building: Silica Sol
  • Tolerances: On Request

Common Material Grades of Stainless Steel Casting

AusteniticCorrosion Resistance (due to high nickel)
304 stainless steelTensile Strength: 515-690 MPa,
Hardness: 70-92 HRB
Widely used, Ductility (low carbon content)Food Processing, KitchenKitchen sinks, Process equipment (e.g., tanks)
304L stainless steelTensile Strength: 485-655 MPa,
Hardness: 70-88 HRB
Ductility (lower carbon for weldability)Chemical, Oil & GasProcess equipment, Heat exchangers
316 stainless steelTensile Strength: 515-690 MPa,
Hardness: 75-95 HRB
Excellent Corrosion Resistance (with molybdenum)Paper industry, Chemical processing equipment, PharmerceuticalPropellers, Medical devices, Furnace parts
316L stainless steelTensile Strength: 485-655 MPa,
Hardness: 75-95 HRB
Improved Weldability, Corrosion ResistanceMarine, ChemicalMarine components, Chemical vessels
201 stainless steelTensile Strength: 620-795 MPa,
Hardness: 70-88 HRB
Cost-Effective (lower nickel), Corrosion Resist.Construction, AutomotiveStructural components, Springs
DuplexHigh Strength, Duplex Structure
2205 stainless steelTensile Strength: 620-800 MPa,
Hardness: 20-35 HRC
Resistance to Stress and Corrosion, Used for WeldingOil & Gas, ChemicalPipes, Pressure vessels
MartensiticHeat Treatable, Moderate Corrosion
410 stainless steelTensile Strength: 450-655 MPa,
Hardness: 70-85 HRB
Moderate Corrosion Resistance, MachinabilityAerospace, FirearmsAircraft components, Mechanical part, bolts
PHPrecipitation-Hardened (from aging)
17-4phTensile Strength: 725-930 MPa,
Hardness: 30-45 HRC
High Strength, Precipitation-HardenedAerospace, MedicalAircraft landing gear, Surgical instruments

Stainless Steel Casting Process


Stainless Steel Investment Casting

In the past, we used water glass to make shells, but in recent years, we have undergone comprehensive renovations and fully adopted advanced silica sol shell-making technology. This not only improves product accuracy and surface finish but also enhances overall performance. At the same time, we have introduced coated sand combined with shell-making to further optimize the shell-making process and ensure that the product meets the highest quality standards.


Stainless Steel Sand Casting

In the sand casting process, different foundries choose various sand mold materials based on customer performance requirements, such as silicon sand, resin sand, pearl sand, expansion sand, etc. Dawang mainly uses resin sand and pearl sand, with pearl sand being known for its uniform particles and good fire resistance, suitable for high-temperature and demanding casting scenarios. We strictly follow the post-testing recycling process to ensure the quality of the sand mold. Our overall goal is to meet the customer’s demand for high-quality castings.


Stainless Steel Shell Mold Casting

Dawang’s shell production line is fully automated to ensure efficiency and production quality. Our monthly production capacity can reach 800 tons and can produce stainless steel castings weighing up to 200kg, providing customers with a reliable supply guarantee. Our shell molding process not only significantly reduces production costs but also rivals precision casting in terms of quality, providing customers with excellent performance and reliable products.

Post Treatments of Stainless Steel Casting


Heat Treatment

Heat treatment is a way to change metal or alloy properties by controlling heating and cooling. This improves hardness, strength, and resistance to corrosion.Our methods mainly include normalizing, annealing, and tempering.


Post Machining

Post-machining is a set of steps done after cutting or shaping materials to fine-tune the part’s size, surface, and shape to meet design and functional standards.The machining of rough castings refers to the grinding, polishing, and hollow magic machining of rough castings according to the requirements of the drawings.


Surface Finishes

We adopt various methods, applying rust prevention oil, painting, sandblasting treatment, chemical treatment, anodizing treatment, and polar electrophoresis. These treatment methods are used for anti-corrosion, increasing wear resistance, improving appearance.

Advantages of Stainless Steel Investment Casting

  • Design Flexibility
  • Accuracy and Precision
  • Wide Range of Alloys
  • Smooth Surface Finish
  • Consistency and Reproducibility
  • Wide Range of Applications
  • Strength and Durability

Stainless Steel Casting Samples

Valve Body Casting

Stainless Steel Sand Casting

Stainless Steel Investment Casting

Vessel Casting

 Support Casting

 Impeller Casting

Stainless Steel Casting Applications


Marine Application

In marine applications, stainless steel castings are widely used. For example: propellers/propeller shafts/railings and handrails/hull fittings/anchors etc. It is a great choice for making ship parts, marine equipment, and offshore engineering components because it resists corrosion and erosion from seawater.


Stainless steel casting is commonly used to make strong valve parts that resist corrosion and high temperatures. This ensures the system operates smoothly for a long time.For example: Ball Valves/Gate Valves/Butterfly Valves/Check Valves/Control Valves/Expansion Joint Valves etc.


Building Fittings

Stainless steel casting is widely used in building accessories applications. It is chosen for its corrosion resistance, structural strength, and elegant appearance. It ensures long-lasting durability in different environments and meets the functional and aesthetic requirements of construction projects.


Pipe Fittings

Stainless steel casting is commonly used in pipe fitting applications. It has strong resistance to corrosion and high strength properties. This ensures that the pipe connectors are durable and can withstand various environments and fluid transmission needs.


Food Machinery

Stainless steel casting is commonly used in food machinery to make hygienic and corrosion-resistant equipment. It also provides reliable operation.


Medical Parts

Stainless steel casting is commonly used in medical component applications. It is chosen for its biocompatibility, corrosion resistance, and processability. This ensures that it meets the high standards of the medical industry and clinical needs, while also meeting hygiene requirements.

FAQs About Stainless Steel Casting

1. What kind of casting process do we use to produce stainless steel parts?

 Dawang stainless steel foundry offer both investment casting stainless steel and stainless steel sand casting processes. We also have our own machining workshop for producing finished parts.

2. How much does custom stainless steel casting cost?

As China’s top stainless steel foundry, Dawang provides our customers with competitive pricing for custom stainless steel casting parts. This is due to the wide range of processes and part weights we have from cast stainless steel experience. Depending on your mechanical property requirement, and tolerance requirement, our sand casting service is often cheaper than the investment casting for equivalent material grade. The price of basic raw material castings is generally higher than carbon steels and sometimes starts from 5USD/kg.

3. Are there any discounts for stainless steel precision castings?
 Yes. We offer discounts to customers who purchase large quantities of stainless steel precision castings.
 Specific: When the total order weight (1 type) of stainless steel precision castings reaches 10 tons and the quantity reaches 10,000 pieces, we can refund the mold fee.
4. What is the difference between 304 and 304L stainless steel?

The main difference is the carbon content. 304 stainless steel is qualified if the carbon content is below 0.08%. All things considered, the carbon content of 304L stainless steel is qualified below 0.03%.

5. What is the size range of these castings?

Size ranges depend on the manufacturer’s equipment and capabilities, but stainless steel castings can generally produce small to large parts.

6. How is the surface treatment of stainless steel castings performed?

Surface treatments can include polishing, pickling, electroplating, etc. to improve appearance and performance.

7. What is the importance of quality control in the production of stainless steel castings?

Quality control ensures that parts meet specifications, including chemical composition, dimensions, surface quality, and more.

8. What are the advantages of stainless steel castings over other manufacturing methods?

Compared with traditional methods such as forging and machining, stainless steel castings can often produce more complex and intricately shaped parts while reducing scrap.

If you have any more questions about stainless steel castings, please contact us now.

    Investment Casting Factory