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Type 4 Magnetic Alloy vs. ZK61A Magnesium

Type 4 magnetic alloy belongs to the nickel alloys classification, while ZK61A magnesium belongs to the magnesium alloys. There are 28 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 Type 4 magnetic alloy and the bottom bar is ZK61A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
46
Elongation at Break, % 2.0 to 40
5.8 to 7.1
Fatigue Strength, MPa 220 to 400
120 to 140
Poisson's Ratio 0.31
0.29
Shear Modulus, GPa 73
18
Shear Strength, MPa 420 to 630
170 to 180
Tensile Strength: Ultimate (UTS), MPa 620 to 1100
290 to 310
Tensile Strength: Yield (Proof), MPa 270 to 1040
180 to 200

Thermal Properties

Latent Heat of Fusion, J/g 290
330
Maximum Temperature: Mechanical, °C 900
120
Melting Completion (Liquidus), °C 1420
640
Melting Onset (Solidus), °C 1370
530
Specific Heat Capacity, J/kg-K 440
960
Thermal Expansion, µm/m-K 11
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
29
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
130

Otherwise Unclassified Properties

Base Metal Price, % relative 60
13
Density, g/cm3 8.8
1.9
Embodied Carbon, kg CO2/kg material 10
23
Embodied Energy, MJ/kg 140
160
Embodied Water, L/kg 210
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 22 to 200
15 to 19
Resilience: Unit (Modulus of Resilience), kJ/m3 190 to 2840
370 to 420
Stiffness to Weight: Axial, points 12
13
Stiffness to Weight: Bending, points 22
62
Strength to Weight: Axial, points 19 to 35
42 to 45
Strength to Weight: Bending, points 18 to 27
50 to 53
Thermal Shock Resistance, points 21 to 37
17 to 18

Alloy Composition

Carbon (C), % 0 to 0.050
0
Chromium (Cr), % 0 to 0.3
0
Cobalt (Co), % 0 to 0.5
0
Copper (Cu), % 0 to 0.3
0 to 0.1
Iron (Fe), % 9.5 to 17.5
0
Magnesium (Mg), % 0
92.1 to 93.9
Manganese (Mn), % 0 to 0.8
0
Molybdenum (Mo), % 3.5 to 6.0
0
Nickel (Ni), % 79 to 82
0 to 0.010
Phosphorus (P), % 0 to 0.010
0
Silicon (Si), % 0 to 0.5
0
Sulfur (S), % 0 to 0.020
0
Zinc (Zn), % 0
5.5 to 6.5
Zirconium (Zr), % 0
0.6 to 1.0
Residuals, % 0
0 to 0.3