Local Service, Global Capabilities.
Local Service, Global Capabilities.
Custom Investment Casting Manufacturer
Investment cast duplex stainless steel components for pumps, valves, marine equipment and corrosive industrial applications.
Engineering Materials
Duplex stainless steel combines ferritic and austenitic structures, giving cast components high strength, strong resistance to chloride stress corrosion cracking, and dependable performance in seawater, chemical processing and offshore service.
Useful for pump, valve and mechanical components where wall thickness, load and long service life must be balanced.
Suitable for aggressive media when standard austenitic stainless steels may not provide enough margin.
Well matched to marine equipment, desalination plants and offshore systems exposed to saltwater environments.
Duplex grades are commonly selected where chloride pitting, crevice corrosion or stress corrosion cracking are key risks.
Stable material selection and controlled heat treatment help castings maintain dependable performance after installation.
For many corrosive applications, duplex alloys can be a practical alternative to high nickel alloys.
Material Grades
AODSON manufactures custom duplex steel casting and super duplex casting parts according to drawings, material grade requirements and working environment.
Standard duplex casting grade commonly associated with 2205 and CD3MN requirements.
A widely specified duplex alloy for corrosive service where strength and chloride resistance matter.
Cast duplex stainless steel option for engineered components that require a balanced corrosion and strength profile.
Super duplex casting grade for more demanding chloride and seawater exposure.
Selected for super duplex impeller, pump and offshore duplex casting projects where corrosion margin is critical.
High alloy super duplex options for severe applications based on customer specification and drawing review.
Typical Products
Applications
Cast components for corrosive process and fluid control equipment.
Parts exposed to saltwater, humidity and long operating cycles.
Material options for demanding offshore systems and assemblies.
Castings for aggressive media, pipelines and process equipment.
Pump, valve and flow components in high chloride environments.
Engineered stainless cast parts for utility and energy equipment.
Wear and corrosion resistant components for slurry and water systems.
Reliable castings for industrial and municipal treatment systems.
Manufacturing Capability
From drawing review to global delivery, AODSON supports buyers that need investment cast duplex stainless steel components with machining, inspection and documentation support.
Precision investment casting process for detailed stainless steel parts.
Secondary machining for shafts, sealing surfaces and circular features.
Machined faces, slots, holes and close-tolerance drawing features.
Shot blasting, polishing and finish options according to application needs.
Inspection support for pressure-related valve and pump components.
PT, MT and UT inspection options based on the part and specification.
Controlled heat treatment to support material performance requirements.
Optional finishing and subassembly support for project-based sourcing.
Quality Assurance
AODSON reviews material, dimensions and critical process requirements before production, then checks castings through in-process and final inspection steps.
RFQ Checklist
For accurate pricing, please send drawings and key working conditions. Our team can review material grade, casting feasibility, machining requirements and estimated lead time.
FAQ
Duplex stainless steel is a stainless alloy family with a mixed ferritic and austenitic structure, offering high strength and strong resistance to chloride-related corrosion.
Super duplex stainless steel is a higher alloy duplex material designed for more demanding corrosion environments, especially seawater, offshore and chemical processing applications.
ASTM A890 Grade 4A is a cast duplex stainless steel grade commonly used for corrosion-resistant castings such as pump, valve and fluid handling components.
ASTM A890 Grade 5A is a cast super duplex stainless steel grade selected for severe chloride and seawater service where higher corrosion resistance is required.
Duplex stainless steel generally provides higher strength and better resistance to chloride stress corrosion cracking than 316 stainless steel, depending on grade and environment.
Yes. AODSON manufactures custom duplex stainless steel castings according to customer drawings, samples, material specifications and inspection requirements.
Yes. AODSON can provide CNC turning, CNC milling and finishing operations after investment casting to deliver machined parts ready for assembly.
Buyers can submit PDF drawings and 3D files such as STEP, STP, IGS and X_T for quotation and manufacturability review.
MOQ depends on part size, tooling requirements, material grade and machining complexity. Please send drawings and quantity for review.
Lead time depends on tooling, casting complexity, heat treatment, machining, inspection and order quantity. AODSON will provide an estimated schedule after reviewing your RFQ.
Related Capabilities
