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CapabilitiesMetal Extrusion Services

Metal Extrusion Services

Get High Quality, Low-Cost Extruded Parts With Xometry

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Extruded parts
Extrusion Overview
Extrusion Materials
Applications and Benefits
What is Extrusion?
Why Xometry?

What is Extrusion?

Extrusion is the process of forcing heated metal through a shaped opening or profile die. The extruded material is a constant cross-section and parts are sawn off the extrusion to the desired length. Aluminum is the most commonly extruded metal and aluminum extrusions are found everywhere from window casings to handrails to electrical housings.

Xometry partners with the leading extrusion suppliers who employ the most sophisticated technology to deliver high-quality extrusions.

Extrusion Materials

Materials Available at Xometry:
Alloy GroupDescriptionSpecific Alloys
Alloy Group

Aluminum Alloy


A structural and stable metal allow with low costs due to wide availability.

Specific Alloys

360.0, A360.0, ADC12, 380.0, A380.0, 383.0, 384.0, B390.0, 413.0, A413.0, C443.0, 518.0

Alloy Group

Magnesium Alloy


A lightweight versatile alloy with great surface detail.

Specific Alloys

AZ91D, AM60B, AS41B

Alloy Group

Zinc Alloy (ZA)


Provides a high quality surface finish and detail.

Specific Alloys

Zamak-2, Zamak-3, Zamak-5, Zamak-7, ZA-8, ZA-12, ZA-27

Additional materials are available upon request! Review more information about our materials here.

Available Extruded Part Finishes

Zinc and zinc-aluminum parts can be left as-cast and retain reasonable corrosion resistance. Aluminum and magnesium parts must be coated to achieve corrosion resistance. Cast parts are typically broken away from the casting sprue, leaving rough marks at the gate locations. Most castings will also have visible marks left by the ejector pins. Surface finish for as-cast zinc alloys is commonly 16-64 microinch Ra.

Anodized (Type II Or Type III)

Aluminum is typically anodized. Type II anodizing creates a corrosion-resistant oxide finish. Parts can be anodized in different colors—clear, black, red and gold are most common. Type III is a thicker finish and creates a wear-resistant layer in addition to the corrosion resistance seen with Type II. Anodized coatings are not electrically conductive.

Powder Coating

All die cast parts can be powder coated. This is a process where powdered paint is electrostatically sprayed onto a part which is then baked in an oven. This creates a strong, wear- and corrosion-resistant layer that is more durable than standard wet painting methods. A wide variety of colors are available to create the desired aesthetic.

Wet Painting

All die cast parts can be wet painted in a wide variety of paint formulations and colors.


Zinc and magnesium parts can be plated with electroless nickel, nickel, brass, tin, chrome, chromate, Teflon, silver and gold.

Chemical Film

A chromate conversion coat can be applied to protect aluminum and magnesium from corrosion and improve the adhesion of paints and primers. Chemical film conversion coatings are electrically conductive.

Media Tumbled

Die cast materials are subjected to vibratory media tumbling to remove sharp edged and smooth surfaces.


Don't see the finish you need? Submit an RFQ and our partner shops will look into a finishing process for you.


Ready to get started on your extrusion quote?

Applications of Extrusion

die cast parts
Aerospace & Automotive Components
die cast parts

Hydro formed shapes, trim, electric vehicle components.

Connector Housings
connector housings

Complex thin wall enclosures including heat sinks.


Ladders, scaffolds, linear motion, conveyors, process control, agriculture, mining

Benefits of Extrusion
Dimensional Accuracy and Stability

Modern extrusion presses and processes produce close tolerance extruded shapes that are durable and dimensionally stable. 

Low Part Cost

With careful design, extruded frames and housings can eliminate multi-part assemblies and can be cut into any desired length. 

Low Tooling Cost

The simplicity of the extrusion process yields 80-90% lower tooling costs that other processes like injection molding or die casting.

Multiple Finishing Options

Aluminum extruded parts can be produced with exceptionally smooth surfaces and accept a variety of paints and plating finishes.

How Does Extrusion Work?

Extrusion works on the same principle as squeezing toothpaste from a tube where metal or plastic material is heated and pushed through a die. It is the manufacturing process of choice when producing high volumes of material with a constant cross-section. Once the desired cross-sectional profile is determined, the material and temper are selected based on strength or stiffness requirements. Then, a hardened steel die is cut to the shape of the profile and the alloy is forced through the die by the extrusion press. The extrusion profile can be almost any shape and be either solid or hollow with one or more hollow sections. 

Extrusions with hollow sections are created with a multi-part die. The material is forced around piercing mandrels supported in the first die which forms the inner profile. The material separates, and then is forced or “welded” back together by the second die which forms the outer profile. The size of the extrusion press is determined by the smallest circle that will fit around the profile. The larger the circumscribed circle, the larger the extrusion press required. Both plastics and metals can be extruded. Aluminum represents roughly 80% of extruded metal parts. Polyethylene is the most commonly extruded plastic.

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Why Choose Xometry for Extrusion Services?

Massive Network Capacity

Endless Options

Choose from millions of possible combinations of materials, finishes, tolerances, markings, and certifications for your order.

Digital Quoting

Easy to Use

Connect directly to hundreds of extrusion suppliers through our easy-to-use platform

Guaranteed Quality

Vetted Network

We are ISO 9001:2015, ISO 13485, and AS9100D certified. Only the top shops that apply to become suppliers make it through our qualification process.