
In pumps, valves, fluid equipment, ship parts, chemical machinery, and marine engineering equipment,Duplex steelCastings are often used in critical components that withstand corrosion, erosion, and certain loads. Haijin Stainless Steel specializes in...Stainless steel precision castingInvestment casting and subsequent CNC machining can be customized for customers based on drawings, samples, or operating conditions to produce various duplex steels.Investment CastingItem.
Common duplex steel grades that can be cast
Duplex steel possesses both austenitic and ferritic microstructures, exhibiting high strength and excellent resistance to pitting and chloride ion corrosion. We can develop castings for common duplex steel grades, including 2205, 2507, 2304, 2101, 1.4462, 1.4410, S31803, S32205, S32750, and S32760, as well as super duplex steel grades, tailored to specific application scenarios. We also provide matching heat treatment, machining, and surface treatment solutions.
Duplex steelInvestment CastingWhich products are suitable?
Duplex stainless steel precision casting is suitable for components with complex structures, high dimensional requirements, and where ordinary stainless steel cannot meet corrosion resistance requirements, such as pump bodies, valve bodies, etc.impellerThis includes connectors, pipe fittings, flanges, supports, marine hardware, food and chemical equipment parts, fluid control accessories, etc. Investment casting reduces subsequent machining allowances and improves the ability to integrally form complex-shaped parts.
One-stop solution from casting to CNC machining
Haijin Stainless Steel offers a range of services including mold making, wax molding, shell making, casting, heat treatment, shot blasting, pickling and passivation, CNC machining, testing, and packaging. For duplex stainless steel, we focus on chemical composition control, casting temperature, heat treatment regime, and critical dimensional machining to help customers achieve a better balance between strength, corrosion resistance, and delivery costs.
Why Choose Haijin Stainless Steel?
We have long served customers in the stainless steel non-standard parts, mechanical parts, pump and valve accessories, and flow and fluid equipment industries. We can process according to drawings and samples, and also provide casting suggestions based on customer requirements for materials, dimensions, tolerances, surface finishes, batch sizes, and application environments. Whether it's small-batch sample production or large-scale production of duplex steel precision castings, please feel free to contact us.
If you are looking for2205 duplex steelFor casting, 2507 super duplex steel casting, 1.4462 duplex stainless steel precision casting, or other duplex steel grades of non-standard custom processing, please contact Haijin Stainless Steel for quotations and process suggestions.
Relevant technical information and product examples
Continue to assess whether the materials, workmanship, and actual parts are suitable for your procurement needs.
- ResourcesComparison of CF8, CF8M, CF3, CF3M with 304 and 316 grades→
- Material Selection GuideHow to choose between 304, 304L, 316, and 316L stainless steel castings→
- Material comparisonWhat are the differences between CF8 and CF8M?→
- Product ExamplesStainless steel mechanical parts casting and CNC machining→
Material and operating condition confirmation
Unsure which stainless steel casting grade to choose?
Please send us drawings and the usage environment. We will take into account corrosion, temperature, strength, processing, and cost requirements to help us determine the most suitable materials and processes.
- Check common terms and casting standards.
- Determining materials by combining medium, temperature and pressure
- Simultaneous confirmation of heat treatment, testing, and certification documents

