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K1A Magnesium vs. C69710 Brass

K1A magnesium belongs to the magnesium alloys classification, while C69710 brass belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (2, 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 C69710 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 43
110
Elongation at Break, % 13
25
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 17
41
Shear Strength, MPa 55
300
Tensile Strength: Ultimate (UTS), MPa 180
470
Tensile Strength: Yield (Proof), MPa 51
230

Thermal Properties

Latent Heat of Fusion, J/g 350
240
Maximum Temperature: Mechanical, °C 120
160
Melting Completion (Liquidus), °C 650
930
Melting Onset (Solidus), °C 650
880
Specific Heat Capacity, J/kg-K 1000
400
Thermal Conductivity, W/m-K 120
40
Thermal Expansion, µm/m-K 27
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 30
8.0
Electrical Conductivity: Equal Weight (Specific), % IACS 170
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 13
26
Density, g/cm3 1.6
8.3
Embodied Carbon, kg CO2/kg material 24
2.7
Embodied Energy, MJ/kg 170
44
Embodied Water, L/kg 970
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 17
99
Resilience: Unit (Modulus of Resilience), kJ/m3 30
250
Stiffness to Weight: Axial, points 15
7.3
Stiffness to Weight: Bending, points 73
19
Strength to Weight: Axial, points 31
16
Strength to Weight: Bending, points 43
16
Thermal Diffusivity, mm2/s 75
12
Thermal Shock Resistance, points 11
16

Alloy Composition


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Arsenic (As), % 0
0.030 to 0.060
Copper (Cu), % 0
75 to 80
Iron (Fe), % 0
0 to 0.2
Lead (Pb), % 0
0.5 to 1.5
Magnesium (Mg), % 98.7 to 99.6
0
Manganese (Mn), % 0
0 to 0.4
Silicon (Si), % 0
2.5 to 3.5
Zinc (Zn), % 0
13.8 to 22
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.3
0 to 0.5