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AWS BMg-1 vs. SAE-AISI T15 Steel

AWS BMg-1 belongs to the magnesium alloys classification, while SAE-AISI T15 steel belongs to the iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (11, 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 SAE-AISI T15 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 47
200
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 18
76
Tensile Strength: Ultimate (UTS), MPa 180
830 to 2240

Thermal Properties

Latent Heat of Fusion, J/g 350
250
Melting Completion (Liquidus), °C 600
1690
Melting Onset (Solidus), °C 440
1640
Specific Heat Capacity, J/kg-K 980
430
Thermal Conductivity, W/m-K 76
21
Thermal Expansion, µm/m-K 26
12

Otherwise Unclassified Properties

Base Metal Price, % relative 12
43
Density, g/cm3 1.8
8.7
Embodied Carbon, kg CO2/kg material 22
16
Embodied Energy, MJ/kg 160
250
Embodied Water, L/kg 980
140

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 66
22
Strength to Weight: Axial, points 27
26 to 71
Strength to Weight: Bending, points 39
22 to 43
Thermal Diffusivity, mm2/s 43
5.6
Thermal Shock Resistance, points 10
26 to 70

Alloy Composition


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Aluminum (Al), % 8.3 to 9.7
0
Beryllium (Be), % 0.00020 to 0.00080
0
Carbon (C), % 0
1.5 to 1.6
Chromium (Cr), % 0
3.8 to 5.0
Cobalt (Co), % 0
4.8 to 5.3
Copper (Cu), % 0 to 0.050
0 to 0.25
Iron (Fe), % 0 to 0.0050
67.5 to 73.5
Magnesium (Mg), % 86.1 to 89.8
0
Manganese (Mn), % 0.15 to 1.5
0.15 to 0.4
Molybdenum (Mo), % 0
0 to 1.0
Nickel (Ni), % 0 to 0.0050
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.050
0.15 to 0.4
Sulfur (S), % 0
0 to 0.030
Tungsten (W), % 0
11.8 to 13
Vanadium (V), % 0
4.5 to 5.3
Zinc (Zn), % 1.7 to 2.3
0
Residuals, % 0 to 0.3
0