Magnesium Machining

Magnesium Machining

Milling and Turning of Magnesium Components
Experts in Magnesium Machining.

A high-precision 5-axis CNC milling machine processing an aluminum component.

Magnesium Machining – Milling and Turning

Alu Kühlkörper von Formkon – komplexe Aluminium-Kühlkörperlösung mit integrierten Kanälen für effiziente Wärmeableitung in Leistungselektronik und Industrie.

At Formkon, we are specialists in CNC machining of magnesium – with decades of experience in producing high-quality prototypes, special parts, and small to medium series.
All machining operations are performed in-house in our state-of-the-art facility using:

  • 5-axis milling
  • 3-axis milling
  • Advanced CNC turning

We deliver fast, reliable, and precise results, tailored to your exact specifications.

Full-Service Magnesium Machining – From Raw Block to Finished Component

We produce prototypes and small to medium series in magnesium – ideal for defence, aerospace, medical, and e-mobility.
Lightweight, precise, and fast – from first sample to finished part.

We offer full traceability and quality control. After machining, your parts can be:

  • Measured and documented
  • Delivered with various surface treatments according to your needs

We typically machine parts from:

  • Hot-rolled AZ31 blocks
  • Extruded round bars in AZ61 or AZ80

Alternatively, we can produce cast magnesium blocks in our own foundry using:

  • AZ91
  • AM50
  • AM60

This gives you flexibility in both material choice and delivery time.

Industries we supply machined magnesium components to:

  • Aerospace
  • Defense and Military
  • Drones and UAVs
  • Motorsport and Performance Automotive
  • Electronics and Consumer Devices
  • Medical Technology
  • Robotics and Automation
  • Prototyping and Product Development

Our facilities for manufacturing prototypes and small series

Advantages of Machined Magnesium Components

Machined magnesium components are exceptionally lightweight, easy to machine, and ideal for applications where weight reduction is critical—without compromising structural integrity.

Surface Treatment Options for Magnesium Components

Why surface treatment us essential. Magnesium offers excellent advantages in terms of strength-to-weight ratio, but it also has natural vulnerabilities—especially regarding corrosion and wear resistance. Proper surface treatments effectively address these weaknesses and help ensure consistent quality, durability, and long-term performance of the final component.

We typically offer the following three surface treatment options:

  • Chromate Conversion Coating (e.g., Surtech 650)
  • Plasma Electrolytic Oxidation (e.g., Keronite or Magoxid-Coat)
  • Powder or Wet Painting

Most Commonly Used Magnesium Alloys

Magnesium AZ31 – Excellent formability and weldability

Magnesium AZ61 – Good strength-to-weight ratio

Magnesium AZ80 – High strength and creep resistance

Magnesium AZ91 (casted in-house) – Good corrosion resistance and castability

Get Your Custom Quote

All Our Technologies for magnesium parts

Investment Casting Aluminium and Magnesium – Fast Prototype Production

With 3D-printed master models for rapid delivery times.

Die Casting of Aluminium and Magnesium – Near-Series Prototypes

Production-like prototypes for optimal testing.

CNC Machining of Aluminium and Magnesium – High-Precision Milling & Turning

For ultra-precise components and fast adjustments.

Magnesium Component Manufacturing – CNC Machining & Prototyping

Magnesium vs. Aluminium

Magnesium and aluminium are both lightweight metals with excellent machinability, each offering distinct advantages. Magnesium is about 30 % lighter than aluminium, making it ideal for weight-optimized components. Aluminium, on the other hand, is often preferred when higher strength and corrosion resistance are required. The choice depends on the specific project requirements, such as weight, strength, and the type of prototype testing.

Magnesium Milling vs. Magnesium Turning – Differences and Advantages

The CNC machining of magnesium parts can be carried out using two main processes: milling and turning. Both methods are excellent for producing precise magnesium components, but they differ in their application and their respective benefits.

Magnesium Milling

In milling, material is removed step by step using rotating cutting tools. This process is especially suited to complex geometries, free-form surfaces, pockets, bores, or thin-walled structures. Magnesium milling offers high design flexibility, excellent surface finishes, and allows for multi-axis machining. It is ideal for prototypes and precise small-batch production.

Magnesium Turning

Turning is a subtractive process in which the workpiece rotates while the cutting tool is held stationary. Magnesium turning is primarily used for rotationally symmetric parts such as shafts, bushings, or rings. The key advantages are efficiency and speed—particularly for larger quantities. Turning also provides superb dimensional accuracy and repeatability.

Choosing the Ideal Machining Method

The choice between magnesium milling and magnesium turning depends on the component’s geometry, the production volume, and the required tolerances. At Formkon, we have many years of experience in both processes and are happy to advise you on the optimal manufacturing strategy for your magnesium parts.

Challenges in Machining Magnesium

Magnesium’s excellent strength-to-weight ratio makes it a popular lightweight metal used across many industries. However, special caution is required when milling and turning magnesium, as chips and dust are easily flammable. At Formkon, we have over 30 years of experience in safely and precisely machining magnesium, and we control the entire manufacturing process to guarantee efficient, high-quality production without compromising safety.