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AWS E90C-B9 vs. AZ61A Magnesium

AWS E90C-B9 belongs to the iron alloys classification, while AZ61A magnesium belongs to the magnesium alloys. There are 27 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 E90C-B9 and the bottom bar is AZ61A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
45
Elongation at Break, % 18
11
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
17
Tensile Strength: Ultimate (UTS), MPa 710
280
Tensile Strength: Yield (Proof), MPa 460
170

Thermal Properties

Latent Heat of Fusion, J/g 270
350
Melting Completion (Liquidus), °C 1460
600
Melting Onset (Solidus), °C 1410
530
Specific Heat Capacity, J/kg-K 470
990
Thermal Conductivity, W/m-K 25
79
Thermal Expansion, µm/m-K 13
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 6.9
12
Electrical Conductivity: Equal Weight (Specific), % IACS 8.0
62

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
12
Density, g/cm3 7.8
1.7
Embodied Carbon, kg CO2/kg material 2.6
23
Embodied Energy, MJ/kg 37
160
Embodied Water, L/kg 91
980

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
27
Resilience: Unit (Modulus of Resilience), kJ/m3 550
310
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
69
Strength to Weight: Axial, points 25
46
Strength to Weight: Bending, points 23
56
Thermal Diffusivity, mm2/s 6.9
47
Thermal Shock Resistance, points 20
17

Alloy Composition

Aluminum (Al), % 0 to 0.040
5.5 to 7.2
Carbon (C), % 0.080 to 0.13
0
Chromium (Cr), % 8.0 to 10.5
0
Copper (Cu), % 0 to 0.2
0 to 0.050
Iron (Fe), % 84.4 to 90.9
0 to 0.0050
Magnesium (Mg), % 0
90.3 to 93.9
Manganese (Mn), % 0 to 1.2
0.15 to 0.5
Molybdenum (Mo), % 0.85 to 1.2
0
Nickel (Ni), % 0 to 0.8
0 to 0.0050
Niobium (Nb), % 0.020 to 0.1
0
Nitrogen (N), % 0.030 to 0.070
0
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0 to 0.5
0 to 0.1
Sulfur (S), % 0 to 0.015
0
Vanadium (V), % 0.15 to 0.3
0
Zinc (Zn), % 0
0.4 to 1.5
Residuals, % 0
0 to 0.3