# Magnesium AZ31B

> The featherweight: 35% lighter than aluminum, machines beautifully, demands fire-aware handling.

- Category: Specialty Metals → magnesium
- HTML page: https://fabvector.com/materials/magnesium-az31b (Portuguese: https://fabvector.com/pt/materials/magnesium-az31b)
- Price index: $$$ (1–5, 6061-T6 = $)

## Mechanical properties (typical values, not certified minimums)

| Property | Value |
|---|---|
| Tensile strength | ~260 MPa |
| Yield strength | ~170–200 MPa |
| Hardness | ~49 HRB |
| Density | 1.77 g/cm³ |
| Machinability | ★★★★★ (5/5) |
| Corrosion resistance | ★☆☆☆☆ (1/5) |

## When to choose it

When every gram counts and aluminum is still too heavy: best stiffness-to-weight for thin-walled housings, natural vibration damping, and higher cutting speeds than 6061. Note: fine chips are flammable — we machine it under controlled, fire-safe procedures.

## When to look elsewhere

Bare magnesium corrodes fast, especially in galvanic contact with steel or in salt — always coat, isolate fasteners, and keep it away from marine service. Strength also trails 6061-T6.

## Typical applications

- Drone and UAV structural parts
- Portable electronics chassis
- Automotive lightweighting components
- Vibration-damping instrument housings

## Compatible surface finishes

- [As-Machined](https://fabvector.com/md/finishes/as-machined)
- [Bead Blasting](https://fabvector.com/md/finishes/bead-blasting)
- [Wet Painting](https://fabvector.com/md/finishes/wet-painting)
- [Laser Marking](https://fabvector.com/md/finishes/laser-marking)

Industries: drones, consumer-electronics, automotive · Instant quote: https://fabvector.com/quote