Zinc Machining Services


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3ERP delivers extensive CNC zinc machining services, manufacturing parts and components with superior accuracy and precision from various zinc alloys. The malleability, exceptional corrosion resistance, and potential for high-quality finishes make zinc alloy a standout choice for CNC machining.

Common applications for custom zinc parts encompass military and aerospace components, medical equipment, valve bodies, plumbing parts, automotive assemblies, and decorative pieces.

Leveraging our cutting-edge CNC machining centers and our team of experienced technicians, we can fabricate custom parts with stringent specifications.


ApplicationsCNC zinc machining for production parts exhibiting superior mechanical properties, precision, and consistency via 3-axis and 5-axis CNC milling.
StrengthsSuperior mechanical properties, high precision, and consistency.
WeaknessesMore geometric constraints compared to 3D printing.


Lead Time< 10 days
Wall Thickness0.75 mm
Tolerances±0.125mm (±0.005″)

Using Zinc for CNC Machining

Zinc is a preferred choice for CNC machining due to its durability, low friction coefficient, impressive malleability, and elegant finish. 3ERP provides a comprehensive range of zinc CNC machining services, utilizing advanced technology and state-of-the-art equipment for unrivaled precision and quality. Our proficient machinists specialize in crafting complex parts, from intricate molds to highly customized components. Zamak 3, Zamak 5, and ZA-8 alloys are commonly used in our CNC machining processes. Each alloy has its unique properties that make it suitable for specific applications.
Zamak 3Zamak 5ZA-8
Precision Stainless Steel part Zamak 3

Zamak 3

Zamak 3, sometimes referred to as Zinc Alloy 3, is the most common zinc alloy in North America due to its excellent balance of hardness, ductility, and strength. It’s an ideal choice for numerous CNC machining applications.

  • Tensile Strength: 285 MPa, 41,300 psi
  • Yield Strength: 250 MPa, 36,300 psi
  • Shear Modulus: 40 GPa
  • Elongation at Break: 10%
  • Hardness (Brinell): 82
  • Density: 6.6 g/cm³, 0.238 lb/in³
  • Maximum Temp: 380 – 395°C, 716 – 743°F

Why Use Our Zinc CNC Machining Services

The Top 6 Reasons:


We welcome any size of orders, from individual prototypes to bulk manufacturing runs.

Best Pricing
Best Pricing

Our high-efficiency, state-of-the-art CNC machines mean you get the most competitive prices in the industry.

Fast Delivery
Fast Delivery

With 40 machines on hand, we can bring your project from conceptual design to delivery faster than our competitors.

Experienced Engineers
Experienced Engineers

Our engineering team, experienced across diverse industries, can handle the most complex projects.

High-precision and tight tolerances
High-precision and tight tolerances

We manufacture parts for the aerospace and medical industries, ensuring stringent tolerances and maximal precision.

Wide range of coatings & finishes
Wide range of coatings & finishes

Choose from an array of aesthetic and functional coatings and finishes for your parts, based on project requirements.

CNC Finishes

Finishes and Post-Processing Options

We offer several finishing options for zinc CNC machined parts.

  • Anodizing: This process forms an oxide layer on the surface of the zinc part, allowing for color customization.
  • Electroless nickel plating: Coats the part with a nickel-phosphorous alloy, making it resistant to corrosion and wear.
  • Powder Coating: Coats the part with a layer of polyester or epoxy powder, providing a durable finish.
  • Passivation: A chemical treatment that removes impurities from the surface of the zinc.
  • Hot Isostatic Pressing (HIP): A process that reduces the porosity of the zinc and improves its mechanical properties.
  • Chromate Conversion Coating: This process adds a thin layer of corrosion protection and an appealing finish.
  • Electroplating: This process coats the zinc part with a thin layer of metal (such as gold, silver, or copper), providing an attractive finish and additional corrosion resistance.
  • Hot Dip Galvanizing: This process involves dipping the zinc part into a vat of molten zinc, forming a protective layer on the surface that prevents rust and corrosion.

Applications & Industries

Our machining capabilities allow us to work with zinc to fabricate parts for a broad spectrum of applications, including:

Automotive components (gear boxes, car handles, etc.)

Pumps and valves (valve bodies, valve stems, etc.)

Hydraulic and pneumatic parts (cylinders, actuators, etc.)

Industrial and military hardware (locks, brackets, etc.)

Electronic components (connector housings, shielding cases, etc.)

Medical parts (equipment housings, braces)

Décor (jewelry, sculptures, ornaments)

And more

Get Zinc CNC Machined Parts

in 4 Easy Steps

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Upload a CAD File

Provide the requested information and upload your 3D CAD file.

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Quote & Design Analysis

We'll provide a quote and Design for Manufacturability (DFM) analysis.

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Order Confirmation

Review the quote, place your order, and we'll initiate the CNC manufacturing process.

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Parts are Shipped!

We'll deliver your CNC-machined prototypes or parts directly to your door.


Typical CNC Machined Zinc Parts We Offer

We machine custom parts in zinc for clients requiring rapid prototyping and for low-volume to mass production orders. Our CNC-machined zinc parts include bearings, gears, valve bodies, fittings, couplings, decorative pieces, and many more.

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Start Your Custom Zinc Project Today!