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AM60B (AM60B-F, M10602) Magnesium

AM60B magnesium is a magnesium alloy. It is typically furnished in the as-fabricated (no temper or treatment) condition. AM60B is the ASTM designation for this material. M10602 is the UNS number. It has a fairly high ductility among magnesium alloys. In addition, it has a moderately low thermal conductivity and a moderately low tensile strength. The graph bars on the material properties cards below compare AM60B magnesium to other magnesium alloys (top) and the entire database (bottom).

Mechanical Properties

Brinell Hardness

62

Elastic (Young's, Tensile) Modulus

45 GPa 6.6 x 106 psi

Elongation at Break

11 %

Fatigue Strength

96 MPa 14 x 103 psi

Poisson's Ratio

0.29

Shear Modulus

17 GPa 2.5 x 106 psi

Shear Strength

140 MPa 20 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)

620 °C 1140 °F

Melting Onset (Solidus)

540 °C 1000 °F

Specific Heat Capacity

1000 J/kg-K 0.24 BTU/lb-°F

Thermal Conductivity

61 W/m-K 35 BTU/h-ft-°F

Thermal Expansion

26 µm/m-K

Otherwise Unclassified Properties

Base Metal Price

12 % relative

Density

1.7 g/cm3 100 lb/ft3

Embodied Carbon

23 kg CO2/kg material

Embodied Energy

160 MJ/kg 68 x 103 BTU/lb

Embodied Water

990 L/kg 120 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

21 MJ/m3

Resilience: Unit (Modulus of Resilience)

190 kJ/m3

Stiffness to Weight: Axial

15 points

Stiffness to Weight: Bending

71 points

Strength to Weight: Axial

38 points

Strength to Weight: Bending

50 points

Thermal Diffusivity

37 m2/s

Thermal Shock Resistance

14 points

Alloy Composition

Magnesium (Mg) 92.6 to 94.3
Aluminum (Al) 5.5 to 6.5
Manganese (Mn) 0.24 to 0.6
Zinc (Zn) 0 to 0.22
Silicon (Si) 0 to 0.1
Copper (Cu) 0 to 0.010
Iron (Fe) 0 to 0.0050
Nickel (Ni) 0 to 0.0020

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

Followup Questions

Similar Alloys

Further Reading

ASTM B94: Standard Specification for Magnesium-Alloy Die Castings

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