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Investment Casting from Vietnam.
Near-Net-Shape. Zero Tariffs.

Precision lost wax casting in stainless steel, carbon steel, aluminum, and superalloys. Complex geometries, tight tolerances, excellent surface finish — from our network of audited Vietnam foundries.

Tooling from $500 · Parts from $1.50 ea · No Section 301 tariffs · Free DFM review

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Real Pricing: Vietnam vs US vs China

Based on actual quotes from our investment casting network. Prices include casting, heat treatment, and standard finishing.

Part Example US Foundry China + 25% Tariff Vietnam (Dewin) You Save
SS316 valve body (500g, qty 500) $28–38 ea $12–16 ea $8.50–11.50 ea 70–72%
17-4PH impeller (300g, qty 1,000) $22–30 ea $9–12.50 ea $6.50–9.00 ea 70–71%
Carbon steel bracket (1.2kg, qty 2,000) $18–25 ea $7.50–10 ea $5.50–7.50 ea 69–70%
A356 aluminum housing (800g, qty 500) $15–22 ea $6.50–9 ea $4.80–6.80 ea 68–69%

Prices are per-piece at listed quantities, excluding tooling. Get an exact quote for your part.

Investment Casting Capabilities

Silica Sol Process (Premium)

  • ✓ Superior surface finish: Ra 1.6–3.2µm
  • ✓ Tightest tolerances: CT4-CT6 per ISO 8062
  • ✓ Best for stainless steel and superalloys
  • ✓ Part weight: 5g to 50kg
  • ✓ Ideal for pump, valve, marine, and food-grade parts

Water Glass Process (Cost-Effective)

  • ✓ Good surface finish: Ra 6.3–12.5µm
  • ✓ Standard tolerances: CT6-CT8 per ISO 8062
  • ✓ Best for carbon and alloy steels
  • ✓ Part weight: 100g to 80kg
  • ✓ 20–30% cheaper than silica sol for suitable parts

Rapid Prototyping (No Tooling)

  • ✓ 3D-printed wax or SLA patterns — skip the die
  • ✓ 1–20 pieces without tooling investment
  • ✓ Turnaround: 2–3 weeks
  • ✓ Same material and quality as production
  • ✓ Perfect for design validation before committing to tooling

Secondary Operations

  • ✓ CNC machining of critical dimensions
  • ✓ Heat treatment: solution annealing, quench, temper, age hardening
  • ✓ Surface: passivation, electropolishing, plating, painting
  • ✓ NDT: X-ray, MPI, dye penetrant, ultrasonic
  • ✓ Assembly, threading, pressing, welding

Investment Casting Materials

Stainless Steels

304 · 316 · 316L · CF8 · CF8M · 17-4PH · 2205 Duplex · 410 · 420 · 440C

Most popular: 316/CF8M (pumps/valves), 17-4PH (aerospace/industrial), 304 (food-grade)

Carbon & Alloy Steels

WCB · WCC · 1020 · 1045 · 4140 · 4340 · 8620 · 8630

Best for: Structural parts, gears, brackets, heavy-duty industrial components

Aluminum Alloys

A356 · A357 · ZL101 · ZL104 · 6061 (limited)

Best for: Lightweight precision parts, aerospace brackets, electronic enclosures

Copper & Bronze Alloys

C83600 · C95800 · C93700 · C90500 · Brass

Best for: Marine fittings, pump impellers, bearings, decorative hardware

Superalloys

Inconel 625 · Inconel 718 · Hastelloy C276 · Stellite 6 · Monel 400

Best for: High-temperature, corrosion-resistant, and wear-resistant applications

Tool Steels & Specialty

D2 · H13 · S7 · Cobalt-chrome (medical) · Titanium (limited)

Best for: Tooling components, medical implants, high-wear industrial parts

Industries We Serve

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Pumps & Valves

Valve bodies, impellers, pump housings, flanges, pipe fittings, ball valve components

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Automotive

Turbo housings, exhaust components, suspension brackets, shift forks, sensor housings

✈️

Aerospace & Defense

Turbine blades, structural brackets, actuator components, landing gear fittings

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Medical & Dental

Surgical instruments, orthopedic implants, dental prosthetics, medical device housings

How It Works

1

Upload Your Design

3D CAD (STEP/IGES), 2D drawings, or sample parts. We'll review for castability and provide DFM feedback to optimize your design.

2

Quote + Die Design

Detailed quote for tooling, piece price, finishing, and machining within 48 hours. Solidification simulation for complex parts.

3

Tooling + Samples

Wax injection die in 2–4 weeks. First article samples with full dimensional report, material cert, and mechanical test results.

4

Production + Delivery

Mass production with in-process QC. NDT inspection as required. DDP shipping to your US location with full documentation.

Why Source Investment Castings from Vietnam?

Vietnam's investment casting industry serves global OEMs in pumps, valves, automotive, and aerospace — with quality systems matching the best Chinese and Indian foundries.

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40–60% Lower Cost Than US

Lower labor and energy costs translate directly to lower piece prices. Tooling costs are 60–80% less than US foundries. In-house machining and finishing eliminate subcontracting markups.

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Zero China Tariffs

Chinese investment castings face 25% Section 301 tariffs. Vietnamese castings enter at standard MFN rates — saving 25–30% on landed cost vs. a comparable Chinese supplier.

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Full In-House Quality Lab

Our foundries have spectrometers, tensile testers, CMMs, X-ray machines, and NDT equipment in-house. Every batch gets material certs, dimensional reports, and mechanical test results.

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See Inside Before You Commit

We've audited and photographed our investment casting foundries. Browse real factory photos, equipment lists, and certifications before placing your first order.

Investment Casting FAQ

What is investment casting (lost wax casting)?
Investment casting uses a wax pattern coated in ceramic shell to create near-net-shape metal parts. The wax is melted out ('lost'), and molten metal is poured into the cavity. It produces complex geometries with excellent surface finish and tight tolerances — often eliminating the need for machining.
What materials can you investment cast?
Stainless steels (304, 316, 316L, 17-4PH, CF8M), carbon steels (WCB, 1020, 1045, 8620), alloy steels (4140, 4340), aluminum alloys (A356, A357), copper alloys (C83600, C95800), and superalloys (Inconel 625, 718). Stainless steel accounts for ~60% of our investment casting work.
What tolerances can you achieve?
Standard investment casting tolerances are ±0.1mm for the first 25mm, plus ±0.04mm per additional 25mm (per ISO 8062 CT5-CT7). Surface finish is typically Ra 3.2–6.3µm as-cast. For tighter tolerances, we CNC machine critical features after casting.
What part sizes can you produce?
From 5 grams to 80 kg. Most investment castings are in the 50g–10kg range. Maximum linear dimension up to 600mm. For larger parts, we use shell investment casting with robotic dipping for consistent shell quality.
Can you handle secondary operations?
Yes. Our investment casting partners offer CNC machining, grinding, polishing (mirror finish available), heat treatment (solution annealing, quenching, tempering, aging), NDT (X-ray, MPI, dye penetrant), and surface treatments (passivation, electropolishing, plating).
What's the tooling cost and lead time?
Wax injection dies typically cost $500–$5,000 depending on part complexity and number of cavities. Die lead time is 2–4 weeks. For prototypes (1–20 pieces), we can use 3D-printed wax or SLA patterns — no die needed, 2–3 week turnaround.
How does Vietnam investment casting pricing compare?
Vietnam is 15–25% cheaper than China before tariffs. With China's 25% Section 301 tariffs, the savings reach 40–50%. For stainless steel castings, the gap is even larger because Vietnam sources stainless from domestic Posco and Formosa mills at competitive prices.
What quality certifications do your foundries have?
ISO 9001:2015, IATF 16949 (automotive), ISO 13485 (medical), PED 2014/68/EU (pressure equipment), AD 2000 Merkblatt W0 (European pressure), and NADCAP (aerospace). All foundries provide material certs (EN 10204 3.1), chemical analysis, and mechanical test reports.

Ready to Source Investment Castings from Vietnam?

Upload your CAD files and get a detailed tooling + piece price quote within 48 hours. Free DFM review included.

Get Your Free Quote →

Or email your drawings to [email protected]