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K1A Magnesium vs. AWS E90C-B3

K1A magnesium belongs to the magnesium alloys classification, while AWS E90C-B3 belongs to the iron 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 K1A magnesium and the bottom bar is AWS E90C-B3.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 43
190
Elongation at Break, % 13
19
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 17
73
Tensile Strength: Ultimate (UTS), MPa 180
710
Tensile Strength: Yield (Proof), MPa 51
600

Thermal Properties

Latent Heat of Fusion, J/g 350
260
Melting Completion (Liquidus), °C 650
1460
Melting Onset (Solidus), °C 650
1420
Specific Heat Capacity, J/kg-K 1000
470
Thermal Conductivity, W/m-K 120
41
Thermal Expansion, µm/m-K 27
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 30
7.7
Electrical Conductivity: Equal Weight (Specific), % IACS 170
8.8

Otherwise Unclassified Properties

Base Metal Price, % relative 13
4.0
Density, g/cm3 1.6
7.8
Embodied Carbon, kg CO2/kg material 24
1.8
Embodied Energy, MJ/kg 170
24
Embodied Water, L/kg 970
59

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 17
130
Resilience: Unit (Modulus of Resilience), kJ/m3 30
970
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 73
24
Strength to Weight: Axial, points 31
25
Strength to Weight: Bending, points 43
23
Thermal Diffusivity, mm2/s 75
11
Thermal Shock Resistance, points 11
21

Alloy Composition


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Carbon (C), % 0
0.050 to 0.12
Chromium (Cr), % 0
2.0 to 2.5
Copper (Cu), % 0
0 to 0.35
Iron (Fe), % 0
93.4 to 96.4
Magnesium (Mg), % 98.7 to 99.6
0
Manganese (Mn), % 0
0.4 to 1.0
Molybdenum (Mo), % 0
0.9 to 1.2
Nickel (Ni), % 0
0 to 0.2
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0
0.25 to 0.6
Sulfur (S), % 0
0 to 0.030
Vanadium (V), % 0
0 to 0.030
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.3
0 to 0.5