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AWS BMg-1 vs. ZA-12

AWS BMg-1 belongs to the magnesium alloys classification, while ZA-12 belongs to the zinc alloys. There are 30 material properties with values for both materials. Properties with values for just one material (7, 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 AWS BMg-1 and the bottom bar is ZA-12.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 47
83
Elongation at Break, % 3.8
1.6 to 5.3
Fatigue Strength, MPa 72
73 to 120
Poisson's Ratio 0.29
0.26
Shear Modulus, GPa 18
33
Shear Strength, MPa 100
240 to 300
Tensile Strength: Ultimate (UTS), MPa 180
260 to 400
Tensile Strength: Yield (Proof), MPa 110
210 to 320

Thermal Properties

Latent Heat of Fusion, J/g 350
120
Maximum Temperature: Mechanical, °C 130
100
Melting Completion (Liquidus), °C 600
430
Melting Onset (Solidus), °C 440
380
Specific Heat Capacity, J/kg-K 980
450
Thermal Conductivity, W/m-K 76
120
Thermal Expansion, µm/m-K 26
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
28
Electrical Conductivity: Equal Weight (Specific), % IACS 55
42

Otherwise Unclassified Properties

Base Metal Price, % relative 12
11
Density, g/cm3 1.8
6.0
Embodied Carbon, kg CO2/kg material 22
3.4
Embodied Energy, MJ/kg 160
64
Embodied Water, L/kg 980
440

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.9
4.0 to 20
Resilience: Unit (Modulus of Resilience), kJ/m3 120
260 to 620
Stiffness to Weight: Axial, points 14
7.6
Stiffness to Weight: Bending, points 66
24
Strength to Weight: Axial, points 27
12 to 19
Strength to Weight: Bending, points 39
15 to 20
Thermal Diffusivity, mm2/s 43
43
Thermal Shock Resistance, points 10
9.4 to 14

Alloy Composition

Aluminum (Al), % 8.3 to 9.7
10.5 to 11.5
Beryllium (Be), % 0.00020 to 0.00080
0
Cadmium (Cd), % 0
0 to 0.0060
Copper (Cu), % 0 to 0.050
0.5 to 1.2
Iron (Fe), % 0 to 0.0050
0 to 0.075
Lead (Pb), % 0
0 to 0.0060
Magnesium (Mg), % 86.1 to 89.8
0.015 to 0.030
Manganese (Mn), % 0.15 to 1.5
0
Nickel (Ni), % 0 to 0.0050
0 to 0.020
Silicon (Si), % 0 to 0.050
0 to 0.060
Tin (Sn), % 0
0 to 0.0030
Zinc (Zn), % 1.7 to 2.3
87.1 to 89
Residuals, % 0 to 0.3
0