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M1A (M1A-F, 3.5200, M15100) Magnesium

M1A magnesium is a magnesium alloy. It is typically furnished in the as-fabricated (no temper or treatment) condition. M1A is the ASTM designation for this material. 3.5200 is the EN numeric designation. And M15100 is the UNS number.

It has the highest electrical conductivity among magnesium alloys. In addition, it has the highest thermal conductivity and a fairly high melting temperature.

The graph bars on the material properties cards below compare M1A magnesium to other magnesium alloys (top) and the entire database (bottom).

Mechanical Properties

Elastic (Young's, Tensile) Modulus

45 GPa 6.6 x 106 psi

Elongation at Break

5.5 %

Fatigue Strength

88 MPa 13 x 103 psi

Poisson's Ratio

0.29

Shear Modulus

18 GPa 2.6 x 106 psi

Shear Strength

120 MPa 17 x 103 psi

Tensile Strength: Ultimate (UTS)

230 MPa 33 x 103 psi

Tensile Strength: Yield (Proof)

130 MPa 19 x 103 psi

Thermal Properties

Melting Completion (Liquidus)

610 °C 1130 °F

Melting Onset (Solidus)

580 °C 1080 °F

Specific Heat Capacity

990 J/kg-K 0.24 BTU/lb-°F

Thermal Conductivity

150 W/m-K 85 BTU/h-ft-°F

Thermal Expansion

26 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

35 % IACS

Electrical Conductivity: Equal Weight (Specific)

190 % IACS

Otherwise Unclassified Properties

Base Metal Price

12 % relative

Density

1.7 g/cm3 100 lb/ft3

Embodied Carbon

24 kg CO2/kg material

Embodied Energy

160 MJ/kg 67 x 103 BTU/lb

Embodied Water

970 L/kg 120 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

11 MJ/m3

Resilience: Unit (Modulus of Resilience)

180 kJ/m3

Stiffness to Weight: Axial

15 points

Stiffness to Weight: Bending

71 points

Strength to Weight: Axial

38 points

Strength to Weight: Bending

49 points

Thermal Diffusivity

88 m2/s

Thermal Shock Resistance

13 points

Alloy Composition

Magnesium (Mg) 97.2 to 98.8
Manganese (Mn) 1.2 to 2.0
Calcium (Ca) 0 to 0.3
Silicon (Si) 0 to 0.1
Copper (Cu) 0 to 0.050
Nickel (Ni) 0 to 0.010
Residuals 0 to 0.3

All values are % weight. Ranges represent what is permitted under applicable standards.

Followup Questions

Similar Alloys

Further Reading

ASTM B107: Standard Specification for Magnesium-Alloy Extruded Bars, Rods, Profiles, Tubes, and Wire

Essential Readings in Magnesium Technology, Suveen N. Mathaudhu et al. (editors), 2014

Environmental Degradation of Advanced and Traditional Engineering Materials, Lloyd H. Hihara et al., 2014.

Properties and Selection: Nonferrous Alloys and Special-Purpose Materials, ASM Handbook vol. 2, ASM International, 1993