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K1A Magnesium vs. AWS ER80S-Ni3

K1A magnesium belongs to the magnesium alloys classification, while AWS ER80S-Ni3 belongs to the iron alloys. There are 27 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 K1A magnesium and the bottom bar is AWS ER80S-Ni3.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 43
190
Elongation at Break, % 13
27
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 17
72
Tensile Strength: Ultimate (UTS), MPa 180
630
Tensile Strength: Yield (Proof), MPa 51
530

Thermal Properties

Latent Heat of Fusion, J/g 350
260
Melting Completion (Liquidus), °C 650
1450
Melting Onset (Solidus), °C 650
1410
Specific Heat Capacity, J/kg-K 1000
470
Thermal Conductivity, W/m-K 120
51
Thermal Expansion, µm/m-K 27
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 30
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 170
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 13
4.0
Density, g/cm3 1.6
7.8
Embodied Carbon, kg CO2/kg material 24
1.7
Embodied Energy, MJ/kg 170
23
Embodied Water, L/kg 970
52

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 17
160
Resilience: Unit (Modulus of Resilience), kJ/m3 30
740
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 73
24
Strength to Weight: Axial, points 31
22
Strength to Weight: Bending, points 43
21
Thermal Diffusivity, mm2/s 75
14
Thermal Shock Resistance, points 11
19

Alloy Composition


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Carbon (C), % 0
0 to 0.12
Copper (Cu), % 0
0 to 0.35
Iron (Fe), % 0
93.2 to 96.6
Magnesium (Mg), % 98.7 to 99.6
0
Manganese (Mn), % 0
0 to 1.3
Nickel (Ni), % 0
3.0 to 3.8
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0
0.4 to 0.8
Sulfur (S), % 0
0 to 0.025
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.3
0 to 0.5