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AZ91B Magnesium vs. AWS BVAg-0

AZ91B magnesium belongs to the magnesium alloys classification, while AWS BVAg-0 belongs to the otherwise unclassified metals. There are 15 material properties with values for both materials. Properties with values for just one material (19, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is AZ91B magnesium and the bottom bar is AWS BVAg-0.

AZ91B (AZ91B-F, M11912) MagnesiumAWS BVAg-0 (P07017) Vacuum Service Filler Metal
Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 46
71
Poisson's Ratio 0.29
0.37
Shear Modulus, GPa 18
26
Tensile Strength: Ultimate (UTS), MPa 240
130

Thermal Properties

Latent Heat of Fusion, J/g 360
110
Melting Completion (Liquidus), °C 600
960
Melting Onset (Solidus), °C 470
960
Specific Heat Capacity, J/kg-K 990
240
Thermal Expansion, µm/m-K 26
20

Otherwise Unclassified Properties

Density, g/cm3 1.7
10

Common Calculations

Stiffness to Weight: Axial, points 15
3.8
Stiffness to Weight: Bending, points 69
13
Strength to Weight: Axial, points 38
3.4
Strength to Weight: Bending, points 49
5.4
Thermal Shock Resistance, points 14
6.6

Alloy Composition

Aluminum (Al), % 8.3 to 9.7
0
Cadmium (Cd), % 0
0 to 0.0010
Carbon (C), % 0
0 to 0.0050
Copper (Cu), % 0 to 0.35
0 to 0.050
Lead (Pb), % 0
0 to 0.0020
Magnesium (Mg), % 87.9 to 91.2
0
Manganese (Mn), % 0.13 to 0.5
0
Nickel (Ni), % 0 to 0.030
0
Phosphorus (P), % 0
0 to 0.0020
Silicon (Si), % 0 to 0.5
0
Silver (Ag), % 0
99.95 to 100
Zinc (Zn), % 0.35 to 1.0
0 to 0.0010