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AWS BMg-1 vs. ASTM A182 Grade F92

AWS BMg-1 belongs to the magnesium alloys classification, while ASTM A182 grade F92 belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, 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 ASTM A182 grade F92.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 47
190
Elongation at Break, % 3.8
22
Fatigue Strength, MPa 72
360
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 18
76
Shear Strength, MPa 100
440
Tensile Strength: Ultimate (UTS), MPa 180
690
Tensile Strength: Yield (Proof), MPa 110
500

Thermal Properties

Latent Heat of Fusion, J/g 350
260
Maximum Temperature: Mechanical, °C 130
590
Melting Completion (Liquidus), °C 600
1490
Melting Onset (Solidus), °C 440
1450
Specific Heat Capacity, J/kg-K 980
470
Thermal Conductivity, W/m-K 76
26
Thermal Expansion, µm/m-K 26
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
9.3
Electrical Conductivity: Equal Weight (Specific), % IACS 55
10

Otherwise Unclassified Properties

Base Metal Price, % relative 12
11
Density, g/cm3 1.8
7.9
Embodied Carbon, kg CO2/kg material 22
2.8
Embodied Energy, MJ/kg 160
40
Embodied Water, L/kg 980
89

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.9
140
Resilience: Unit (Modulus of Resilience), kJ/m3 120
650
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 66
24
Strength to Weight: Axial, points 27
24
Strength to Weight: Bending, points 39
22
Thermal Diffusivity, mm2/s 43
6.9
Thermal Shock Resistance, points 10
19

Alloy Composition


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Aluminum (Al), % 8.3 to 9.7
0 to 0.020
Beryllium (Be), % 0.00020 to 0.00080
0
Boron (B), % 0
0.0010 to 0.0060
Carbon (C), % 0
0.070 to 0.13
Chromium (Cr), % 0
8.5 to 9.5
Copper (Cu), % 0 to 0.050
0
Iron (Fe), % 0 to 0.0050
85.8 to 89.1
Magnesium (Mg), % 86.1 to 89.8
0
Manganese (Mn), % 0.15 to 1.5
0.3 to 0.6
Molybdenum (Mo), % 0
0.3 to 0.6
Nickel (Ni), % 0 to 0.0050
0 to 0.4
Niobium (Nb), % 0
0.040 to 0.090
Nitrogen (N), % 0
0.030 to 0.070
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0 to 0.050
0 to 0.5
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0
0 to 0.010
Tungsten (W), % 0
1.5 to 2.0
Vanadium (V), % 0
0.15 to 0.25
Zinc (Zn), % 1.7 to 2.3
0
Zirconium (Zr), % 0
0 to 0.010
Residuals, % 0 to 0.3
0