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AWS BMg-1 vs. ASTM A182 Grade F11 Class 2

AWS BMg-1 belongs to the magnesium alloys classification, while ASTM A182 grade F11 class 2 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 F11 class 2.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 47
190
Elongation at Break, % 3.8
22
Fatigue Strength, MPa 72
220
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 18
73
Shear Strength, MPa 100
340
Tensile Strength: Ultimate (UTS), MPa 180
540
Tensile Strength: Yield (Proof), MPa 110
310

Thermal Properties

Latent Heat of Fusion, J/g 350
260
Maximum Temperature: Mechanical, °C 130
430
Melting Completion (Liquidus), °C 600
1460
Melting Onset (Solidus), °C 440
1420
Specific Heat Capacity, J/kg-K 980
470
Thermal Conductivity, W/m-K 76
39
Thermal Expansion, µm/m-K 26
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 55
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 12
2.9
Density, g/cm3 1.8
7.8
Embodied Carbon, kg CO2/kg material 22
1.6
Embodied Energy, MJ/kg 160
21
Embodied Water, L/kg 980
53

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.9
100
Resilience: Unit (Modulus of Resilience), kJ/m3 120
260
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 66
24
Strength to Weight: Axial, points 27
19
Strength to Weight: Bending, points 39
19
Thermal Diffusivity, mm2/s 43
11
Thermal Shock Resistance, points 10
16

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
0.1 to 0.2
Chromium (Cr), % 0
1.0 to 1.5
Copper (Cu), % 0 to 0.050
0
Iron (Fe), % 0 to 0.0050
95.8 to 97.7
Magnesium (Mg), % 86.1 to 89.8
0
Manganese (Mn), % 0.15 to 1.5
0.3 to 0.8
Molybdenum (Mo), % 0
0.44 to 0.65
Nickel (Ni), % 0 to 0.0050
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.050
0.5 to 1.0
Sulfur (S), % 0
0 to 0.040
Zinc (Zn), % 1.7 to 2.3
0
Residuals, % 0 to 0.3
0