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Nickel 685 vs. WE54A Magnesium

Nickel 685 belongs to the nickel alloys classification, while WE54A magnesium belongs to the magnesium alloys. There are 29 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 nickel 685 and the bottom bar is WE54A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 350
85
Elastic (Young's, Tensile) Modulus, GPa 200
44
Elongation at Break, % 17
4.3 to 5.6
Fatigue Strength, MPa 470
98 to 130
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 77
17
Shear Strength, MPa 770
150 to 170
Tensile Strength: Ultimate (UTS), MPa 1250
270 to 300
Tensile Strength: Yield (Proof), MPa 850
180

Thermal Properties

Latent Heat of Fusion, J/g 320
330
Maximum Temperature: Mechanical, °C 1000
170
Melting Completion (Liquidus), °C 1380
640
Melting Onset (Solidus), °C 1330
570
Specific Heat Capacity, J/kg-K 460
960
Thermal Conductivity, W/m-K 13
52
Thermal Expansion, µm/m-K 12
25

Otherwise Unclassified Properties

Base Metal Price, % relative 75
34
Density, g/cm3 8.4
1.9
Embodied Carbon, kg CO2/kg material 10
29
Embodied Energy, MJ/kg 140
260
Embodied Water, L/kg 340
900

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
10 to 14
Resilience: Unit (Modulus of Resilience), kJ/m3 1820
360 to 380
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
62
Strength to Weight: Axial, points 42
39 to 43
Strength to Weight: Bending, points 31
49 to 51
Thermal Diffusivity, mm2/s 3.3
28
Thermal Shock Resistance, points 37
18 to 19

Alloy Composition

Aluminum (Al), % 1.2 to 1.6
0
Boron (B), % 0.0030 to 0.010
0
Carbon (C), % 0.030 to 0.1
0
Chromium (Cr), % 18 to 21
0
Cobalt (Co), % 12 to 15
0
Copper (Cu), % 0 to 0.5
0 to 0.030
Iron (Fe), % 0 to 2.0
0 to 0.010
Lithium (Li), % 0
0 to 0.2
Magnesium (Mg), % 0
88.7 to 93.4
Manganese (Mn), % 0 to 1.0
0 to 0.030
Molybdenum (Mo), % 3.5 to 5.0
0
Nickel (Ni), % 49.6 to 62.5
0 to 0.0050
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 0.75
0 to 0.010
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 2.8 to 3.3
0
Unspecified Rare Earths, % 0
1.5 to 4.0
Yttrium (Y), % 0
4.8 to 5.5
Zinc (Zn), % 0.020 to 0.12
0 to 0.2
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0
0 to 0.3