OEM custom parts

Quality Investment Castings Manufactured

Sino Industries serves as a contract manufacturer of metal parts for OEMs worldwide. We provide a comprehensive range of investment casting services that cater to diverse needs and requirements.

Investment casting is commonly used for producing complex-shaped parts, large objects, and prototypes, as it is a relatively low-cost and versatile casting method. It is widely utilized in various industries, including automotive, commercial vehicles, railway, shipbuilding, and piping industry.

Investment Casting Materials

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We’ve got your investment casting needs covered with a variety of materials, including stainless steel, aluminum, carbon steel, alloy steel, cobalt-based alloys, and nickel-based alloys – giving you plenty of options to suit your project perfectly! Our team is here to help you navigate your choices and provide expert advice on material selection.

AISI (UNS)DIN GermanEN 10088JIS JapanUltimate tensile strength (MPa)Yield strength (MPa)Elongation in 50 mm (%)
303 (S30300)X8CrNiS18-91.4305SUS 303550-620240-26053-50
304 (S30400)X5CrNi18-101.4301SUS 3045-620240-29060-55
316 (S31600)X5CrNiMo17-12-21.4401SUS 31650-590210-29060-55
410 (S41000)X12Cr131.4006SUS 410480-520240-31035-25
416 (S41600)X12CrS131.4005SUS 416480-52027530-20
Room Temperature Mechanical Properties of Selected Annealed Stainless Steels
AISI USDIN GermanyEN EuropeJIS JapanUltimate tensile strength (MPa)Yield strength (MPa)Elongation in 50 mm (%)Hardness (HB)
1020 C22C22ES20C44133035131
Mechanical Properties of Selected Normalized Carbon and Alloy Steels
AISI (UNS)EN 10088JIS JapanUltimate tensile strength (MPa)Yield strength (MPa)Elongation in 50 mm (%)
1100 (A91100)AW-1100A1100903535-45
2024 (A92024)AW-2024A20241907520-22
3003 (A93003)AW-3003A30031104030-40
5052 (A95052)AW-5052A50521909025-30
6061 (A96061)AW-6061A60611255525-30
7075 (A97075)AW-7075A707523010516-17
Mechanical Properties of Selected Aluminum Alloys at Room Temperature

Water Glass Workshop vs. Silica Sol Workshop

At Sino Industries foundry, we are experienced in both methods of lost-wax casting:

Water Glass Castings (Sodium Silicate) are suitable for applications prioritizing functionality over intricate design. The coarser finish may require additional processing, making it apt for industrial parts with less emphasis on surface precision.

Silica Sol Castings (Colloidal Silica) excel in intricate designs and tight tolerances. The process offers a smoother finish, requiring minimal post-processing, making it ideal for precision components where esthetics and detailed features are crucial.

Investment Casting Process

Wax Pattern Creation

Wax Pattern Trimming

Wax Inspection

Wax Pattern Tree

Shell Building




Melting and Pouring

Shot Blasting

Shell Removal


Investment Casting Applications

Sino Industries specializes in creating investment castings for a variety of industries. Our customers include some of the most successful companies worldwide, ranging from Fortune 500 companies to small family-owned businesses.

Aerospace Industry
  • Turbine blades
  • Aircraft engine components
  • Aerospace structural parts
Medical Equipment
  • Surgical instruments
  • Dental implants
  • Medical device components
Automotive Industry
  • Turbocharger components
  • Engine mounts
  • Exhaust manifolds
Oil and Gas Industry
  • Valve components
  • Pump impellers
  • Oil and gas exploration tools
Energy Sector
  • Gas turbine components
  • Solar power components
Electronics & Technology
  • Electronic enclosures
  • Sensor housings
Marine Industry
  • Marine propellers
  • Ship engine components
  • Nautical equipment
Food Processing
  • Food machinery components
  • Conveyor system parts
  • Industrial cooking equipment parts

Investment Advantages & Alternatives

If you are looking for more options than investment casting, check our informative die casting and sand casting pages.

Investment Casting

  • Excellent Surface Finish: Excellent surface finish, reducing the need for additional finishing processes.
  • Material Versatility: Can be used with a wide range of metals and alloys.
  • Low Tooling Costs for Prototypes: Suited for low to medium production volumes with relatively low tooling costs for prototypes.

Die Casting

  • High Production Rates: Well-suited for high-volume production due to rapid cycle times.
  • Dimensional Accuracy: Offers excellent dimensional accuracy and repeatability.
  • Complex Shapes: Capable of producing complex shapes with tight tolerances.
  • Reduced Machining: Minimal post-casting machining required.

Shell Molding

  • Good Surface Finish: Can achieve a good surface finish on castings.
  • Medium to High Production Rates: Suitable for medium to high production volumes.
  • Versatility: Can accommodate various metals, including ferrous and non-ferrous alloys.
  • Cost-Effective Tooling: Lower tooling costs compared to some other methods.

FAQ’S About Our Investment Casting Services

Feel free to contact our team for more detailed information or to discuss your specific investment casting needs. Call us (+86) 0573-8472 2588 or email us at sales@sinoindustry.com.

How does investment casting differ from other casting methods?

Investment casting, also known as precision or lost-wax casting, is a manufacturing process utilizing a wax pattern to create molds for metal parts. Distinguished by its ability to produce intricate shapes with superior surface finish and dimensional accuracy, investment casting sets itself apart from other methods.

Can investment casting be cost-effective for large production runs?

Yes, investment casting proves cost-effective for large production runs, particularly for complex parts. Its near-net shape capabilities minimize machining requirements, contributing to overall cost efficiency. Simultaneous production of multiple parts in a single mold further enhances its cost-effectiveness.

What quality control measures are used in investment casting?

Our investment casting process upholds stringent quality control standards. Incorporating advanced techniques like non-destructive testing, dimensional inspection, and visual assessments, we ensure each cast part meets exact specifications. Our commitment to quality spans from material selection to the final inspection of finished components.

What is the typical lead time for investment casting projects?

The lead time for investment casting projects varies based on factors like complexity, size, and quantity. We prioritize efficiency and timeliness, collaborating closely with clients to establish realistic timelines. Factors such as tooling design, wax pattern production, casting, and finishing processes are considered to deliver high-quality products within agreed-upon timeframes.