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AWS BMg-1 vs. EN 1.7710 Steel

AWS BMg-1 belongs to the magnesium alloys classification, while EN 1.7710 steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (5, 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 EN 1.7710 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 47
190
Elongation at Break, % 3.8
6.8 to 11
Fatigue Strength, MPa 72
500 to 620
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 18
73
Tensile Strength: Ultimate (UTS), MPa 180
930 to 1070
Tensile Strength: Yield (Proof), MPa 110
800 to 1060

Thermal Properties

Latent Heat of Fusion, J/g 350
260
Maximum Temperature: Mechanical, °C 130
440
Melting Completion (Liquidus), °C 600
1470
Melting Onset (Solidus), °C 440
1430
Specific Heat Capacity, J/kg-K 980
470
Thermal Conductivity, W/m-K 76
41
Thermal Expansion, µm/m-K 26
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 55
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 12
3.5
Density, g/cm3 1.8
7.8
Embodied Carbon, kg CO2/kg material 22
2.2
Embodied Energy, MJ/kg 160
30
Embodied Water, L/kg 980
57

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.9
73 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 120
1680 to 2970
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 66
24
Strength to Weight: Axial, points 27
33 to 38
Strength to Weight: Bending, points 39
27 to 30
Thermal Diffusivity, mm2/s 43
11
Thermal Shock Resistance, points 10
27 to 31

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
0.12 to 0.18
Chromium (Cr), % 0
1.3 to 1.8
Copper (Cu), % 0 to 0.050
0
Iron (Fe), % 0 to 0.0050
95.1 to 97
Magnesium (Mg), % 86.1 to 89.8
0
Manganese (Mn), % 0.15 to 1.5
0.6 to 1.0
Molybdenum (Mo), % 0
0.8 to 1.0
Nickel (Ni), % 0 to 0.0050
0
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 0.050
0 to 0.6
Sulfur (S), % 0
0 to 0.030
Vanadium (V), % 0
0.15 to 0.25
Zinc (Zn), % 1.7 to 2.3
0
Residuals, % 0 to 0.3
0