AlMgSc (Scalmalloy) Aluminum Powder
Aluminum Alloy Powders · Metal Additive Manufacturing Powder
Scalmalloy is a scandium-modified aluminum-magnesium alloy developed by Airbus for aerospace AM, offering the highest strength of any printable aluminum: ~510 MPa UTS as-built with excellent ductility and corrosion resistance. Its Al-Mg-Sc-Zr chemistry creates nano-scale Al3Sc precipitates during printing, delivering a unique strength-density ratio without hot cracking. Scalmalloy is used for topology-optimized brackets, drone and satellite structures where every gram matters; published LPBF data show 510 MPa UTS, 495 MPa YS and 13% elongation. Scandium makes powder expensive — typically $200-400 per kg — and supply is concentrated. Buyers should verify scandium content (~0.66%) and request documentation on the powder producer's Sc supply chain.
Typical Applications
AlMgSc (Scalmalloy) Aluminum Powder - Key Properties
| Chemical composition (wt%) | Al bal · Mg 4-5 · Sc ~0.66 · Zr 0.3-0.5 · Mn 0.3-0.8 |
| Density | 2.67 g/cm³ (bulk) |
| Tensile strength (as-built) | 510 MPa UTS · 495 MPa YS (median of 5 data points) |
| Elongation (as-built) | 13% (median of 5 data points) |
| Hardness | ~141 HV (as-built) |
| Particle size | 20-63 µm |
| Production | Gas atomization — scandium-controlled lots |
| Standards | Airbus Scalmalloy® specification (proprietary alloy) |
3 product offer(s) — 3 supplier(s)
Frequently Asked Questions
How much does Scalmalloy powder cost?
Scandium content drives the price: typically $200-400 per kg. Request current quotes from verified suppliers on this page — responses within 24 hours.
Is Scalmalloy stronger than AlSi10Mg?
Yes — as-built Scalmalloy (~510 MPa) substantially exceeds AlSi10Mg (~300 MPa) and even heat-treated AlSi7Mg, at comparable weight. It is the strongest printable aluminum alloy.
Does Scalmalloy need heat treatment?
No — Scalmalloy achieves its strength directly in the as-built condition via Al3Sc precipitation during printing, which simplifies post-processing.
What is Scalmalloy used for?
Weight-critical aerospace and motorsport structures, drones, satellite brackets and topology-optimized parts where the strength-to-weight ratio justifies the premium.
Why is Scalmalloy expensive?
Scandium is a rare, costly alloying element with concentrated supply. Prices reflect Sc market price; batch sizes are typically smaller than for standard aluminum alloys.
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