Elektron® 43

Elektron® 43 is a lightweight, high-strength wrought magnesium alloy for use at temperatures up to 250˚C.

The properties of of this alloy mean it is well suited for use as feedstock material used to machine high performance components, especially those associated with elevated temperature performance.

Designs in Elektron® 43 can be 20% to 30% lighter than a corresponding aluminium design.

This alloy is available as rolled plate, forging feedstock and extruded bar, section and profile.

Elektron® 43 is an optimised wrought evolution of the original casting alloy, Elektron® WE43.

Elektron® 43 has undergone extensive flammability testing by the Federal Aviation Administration (FAA). The FAA have shown that the use of Elektron® 43 in aircraft seat frames does not reduce the level of safety of the aircraft when compared to heavier aluminium seat components.

Product Information

Find out more about this product below.

Designations

UNS M18434
ASTM WE43C

Specifications

AMS 4485 – Extrusion
ASTM B107 and B107M – Extrusion
MMPDS-08 (and later versions) – Including full A and B basis statistical analysis of properties for bothextrusions and plate.

Chemical Composition

Yttrium: 3.7 – 4.3%
Rare earths: 2.3 – 3.5%
Zirconium: 0.2% min
Magnesium: Balance

Heat Treatment

Extruded Elektron® 43 develops its maximum strength in the artificially aged (T5) heat treated condition.

Physical Properties

Specific gravity: 1.83
Coefficient of thermal expansion: 25.6 x 10-6K-1
Thermal conductivity: 57.6 Wm-1K-1
Specific heat: 993 Jkg-1K-1
Electrical resistivity: 148 nΩm
Modulus of elasticity: 44.1 GPa
Poisson’s ratio: 0.3
Melting range: 540 – 640˚C
Damping index: 0.09
Brinell hardness: 70 – 90

Design Data

Longitudinal – Specification minima (A-basis statistical)

Extruded – T5

0.2% proof: 195 MPa (28.2 ksi)
Ultimate tensile strength: 303 MPa (43.9 ksi)
Elongation: 6%

Ambient Temperature

Ambient temperature mechanical properties

T5 properties for extruded Elektron® 43 are dependent upon extruded profile. Tensile strength values up to 300 MPa 0.2% PS (43.5 ksi); 375 MPa UTS (54.4 ksi); and elongation of 11% have been demonstrated.

Typical Tensile Properties

Extruded bar – Longitudinal