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HM31A

UNS M13312

Description

HM31A

MAGNESIUM ALLOY

Magnesium alloy HM31A is magnesium-thorium alloy recommended for elevated temperature applications. Specifically, HM31A-F is developed for elevated temperature applications owing to its excellent weldability and good corrosion resistance; HM31A-T5 exhibits improved short and long-time creep properties and good ductility even at elevated temperatures.

General Information

Items	HM31A-F	HM31A-T5
Catalog	ACAM-Mg-A011	ACAM-Mg-A012
Density	1.80 g/cm³	1.80 g/cm³
Melting Point	--	482 °C
Thermal Expansion Co-efficient (@ 0-100°C)	26 µm/m°C	26 µm/m°C
Thermal Conductivity	104 W/mK	104 W/mK

Chemical Component

Mg	Th	Mn
96.0 min	2.5-3.5	1.2 max

* Unit: %

Typical Mechanical Properties

Items	HM31A-F	HM31A-T5
Tensile Strength, Ultimate	290 MPa	300 MPa
Tensile Strength, Yield	230 MPa	270 MPa
Compressive Yield Strength	185 MPa	170 MPa
Ultimate Bearing Strength	480 MPa	470 MPa
Bearing Yield Strength	345 MPa	330 MPa
Shear Strength	150 MPa	17.0 GPa
Shear Modulus	17 GPa	185 MPa
Elastic Modulus	44.8 GPa	45 GPa
Poissons Ratio	0.35	0.35
Elongation at Break	10%	10%
Tensile Modulus	--	45.0 GPa

Material Forms

Magnesium alloy HM31A is available in Extrusions.

Applications

Magnesium alloy HM31A has been used in several military applications, for example, it can be used in the following aspects:

Missiles
Spacecraft

Tanks
Aircraft

* Technical data included herein should be used as a guideline only, and should not be construed as maximum or minimum values for specification or for final design, or for a particular use or application. The data may be revised anytime without notice.

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