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AM100A-F Magnesium

AM100A-F magnesium is AM100A magnesium in the as-fabricated (no temper or treatment) condition. It has the lowest strength compared to the other variants of AM100A magnesium. The graph bars on the material properties cards below compare AM100A-F magnesium to other magnesium alloys (top) and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.

Mechanical Properties

Elastic (Young's, Tensile) Modulus

46 GPa 6.7 x 106 psi

Elongation at Break

3.8 %

Fatigue Strength

48 MPa 7.0 x 103 psi

Poisson's Ratio

0.29

Shear Modulus

18 GPa 2.6 x 106 psi

Shear Strength

90 MPa 13 x 103 psi

Tensile Strength: Ultimate (UTS)

160 MPa 23 x 103 psi

Tensile Strength: Yield (Proof)

78 MPa 11 x 103 psi

Thermal Properties

Latent Heat of Fusion

350 J/g

Maximum Temperature: Mechanical

140 °C 280 °F

Melting Completion (Liquidus)

590 °C 1100 °F

Melting Onset (Solidus)

460 °C 870 °F

Solidification (Pattern Maker's) Shrinkage

1.3 %

Specific Heat Capacity

990 J/kg-K 0.24 BTU/lb-°F

Thermal Conductivity

73 W/m-K 42 BTU/h-ft-°F

Thermal Expansion

25 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

11 % IACS

Electrical Conductivity: Equal Weight (Specific)

59 % IACS

Otherwise Unclassified Properties

Base Metal Price

12 % relative

Density

1.7 g/cm3 110 lb/ft3

Embodied Carbon

22 kg CO2/kg material

Embodied Energy

160 MJ/kg 68 x 103 BTU/lb

Embodied Water

1000 L/kg 120 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

4.9 MJ/m3

Resilience: Unit (Modulus of Resilience)

66 kJ/m3

Stiffness to Weight: Axial

15 points

Stiffness to Weight: Bending

70 points

Strength to Weight: Axial

25 points

Strength to Weight: Bending

38 points

Thermal Diffusivity

43 mm2/s

Thermal Shock Resistance

9.7 points

Alloy Composition

Magnesium (Mg)Mg 87.9 to 90.6
Aluminum (Al)Al 9.3 to 10.7
Manganese (Mn)Mn 0.1 to 0.35
Silicon (Si)Si 0 to 0.3
Zinc (Zn)Zn 0 to 0.3
Copper (Cu)Cu 0 to 0.1
Nickel (Ni)Ni 0 to 0.010
Residualsres. 0 to 0.3

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

Followup Questions

Further Reading

ASTM B199: Standard Specification for Magnesium-Alloy Permanent Mold Castings

ASTM B403: Standard Specification for Magnesium-Alloy Investment Castings

Welding and Joining of Magnesium Alloys, Liming Liu (editor), 2010

ASTM B80: Standard Specification for Magnesium-Alloy Sand Castings

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

CRC Materials Science and Engineering Handbook, 4th ed., James F. Shackelford et al. (editors), 2015