VT machining offers CNC Milling for AZ91D Magnesium (UNS M11916 / ASTM B93), typically supplied die-cast. Most common magnesium die-cast alloy; good castability.
CNC Milling Notes for AZ91D Magnesium
AZ91D Magnesium mills well with conventional strategies; finishing passes are planned to meet flatness and finish callouts.
For estimating, a 100 × 100 × 10 mm block of AZ91D Magnesium weighs about 0.18 kg.
Starting Parameters for CNC Milling AZ91D Magnesium
| Cutting speed (carbide) | 425-1020 m/min |
|---|---|
| Feed per tooth | 0.035-0.14 mm |
| Spindle speed, Ø10 mm end mill | 13530-24000 rpm |
| Insert / tool class | ISO N — sharp, polished, uncoated or DLC |
| Coolant | Dry or mineral oil only — never water-based (fire risk) |
| Thermal growth, 100 mm part, +10 °C | 26 µm (CTE 26 µm/m·K) |
Starting values for AZ91D Magnesium, Die-cast; optimised on the first article.
AZ91D Magnesium Data Relevant to CNC Milling
| Equivalent designations | UNS M11916 / ASTM B93 |
|---|---|
| Key composition | Al 8.5-9.5%, Zn 0.45-0.9% |
| Typical supply condition | Die-cast |
| Hardness (typical) | ~63 HB |
Typical values; we work to your drawing and mill certificate.
How AZ91D Magnesium Differs
Most common magnesium die-cast alloy; good castability.
Typical applications: Laptop and phone housings, automotive.
AZ91D Magnesium vs Similar Grades
| AZ91D Magnesium | AZ31B Magnesium | ZK60 Magnesium | |
|---|---|---|---|
| Key composition | Al 8.5-9.5%, Zn 0.45-0.9% | Al 2.5-3.5%, Zn 0.6-1.4% | Zn 4.8-6.2%, Zr ≥0.45% |
| Hardness | ~63 HB | ~49-73 HB | ~80 HB |
| Tensile (MPa) | ~230 | ~240-290 | ~340 |
| Typical use | Laptop and phone housings, automotive | Electronics housings, aerospace panels | Aerospace and motorsport structural parts |
More on CNC Milling Aluminum
Finishing options, quality documentation and general cnc milling guidance for all aluminum grades are on our CNC Milling Aluminum page.
No drawing yet? Sketch the part in our free 3D + 2D builder and send it with your RFQ.
Quoting CNC Milling AZ91D Magnesium
Send a STEP/IGES model or PDF drawing, confirm AZ91D Magnesium and its condition (we usually see it supplied die-cast), the quantity, critical tolerances and any finish or certificate requirements.
AZ91D Magnesium in Other Processes
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Send the drawing, the AZ91D Magnesium condition and the quantity — pricing and lead time come back the same or next business day.
Request a QuoteFrequently Asked Questions
What surface finish is achievable on AZ91D Magnesium with CNC Milling?
Surface finish on AZ91D Magnesium is controlled to your specification; we confirm the achievable Ra against your callout.
What is the typical lead time and minimum order for CNC Milling AZ91D Magnesium?
CNC Milling prototypes for AZ91D Magnesium can be produced quickly and scaled to series production. Send your drawing and quantity and we will advise lead time and any minimum order.
Does CNC Milling AZ91D Magnesium require dedicated tooling?
Most AZ91D Magnesium machining work uses standard cutting tools and CNC programs; dedicated fixtures are made only when geometry or volume requires them.
Why is AZ91D Magnesium a good choice for CNC Milling?
AZ91D Magnesium is ultralight with excellent machinability, which makes it well suited to CNC Milling. We tune the process to the alloy so the finished AZ91D Magnesium machining part meets your dimensional and functional requirements.
What tolerances can you hold for CNC Milling AZ91D Magnesium?
Achievable tolerances for AZ91D Magnesium machining depend on the alloy, geometry and feature size. Milling holds positional and dimensional tolerances to around ±0.01 mm, tighter with precision setups. Exact figures are confirmed against your drawing callouts.
What is CNC Milling AZ91D Magnesium and how is it done?
CNC Milling AZ91D Magnesium refers to multi-axis milling cutters remove material to produce prismatic features, pockets, slots and contoured 3D surfaces. Applied to AZ91D Magnesium — ultralight with excellent machinability — VT machining produces each part to your CAD drawing, selecting parameters from your tolerance, finish and quantity requirements.