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AWS BNi-5a vs. ZK61A Magnesium

AWS BNi-5a belongs to the nickel alloys classification, while ZK61A magnesium belongs to the magnesium alloys. There are 19 material properties with values for both materials. Properties with values for just one material (13, 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 AWS BNi-5a and the bottom bar is ZK61A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
46
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 72
18
Tensile Strength: Ultimate (UTS), MPa 480
290 to 310

Thermal Properties

Latent Heat of Fusion, J/g 420
330
Melting Completion (Liquidus), °C 1150
640
Melting Onset (Solidus), °C 1070
530
Specific Heat Capacity, J/kg-K 500
960
Thermal Expansion, µm/m-K 12
27

Otherwise Unclassified Properties

Base Metal Price, % relative 55
13
Density, g/cm3 7.9
1.9
Embodied Carbon, kg CO2/kg material 9.0
23
Embodied Energy, MJ/kg 130
160
Embodied Water, L/kg 260
940

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
62
Strength to Weight: Axial, points 17
42 to 45
Strength to Weight: Bending, points 17
50 to 53
Thermal Shock Resistance, points 15
17 to 18

Alloy Composition

Aluminum (Al), % 0 to 0.050
0
Boron (B), % 1.0 to 1.5
0
Carbon (C), % 0 to 0.1
0
Chromium (Cr), % 18.5 to 19.5
0
Cobalt (Co), % 0 to 0.1
0
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 0 to 0.5
0
Magnesium (Mg), % 0
92.1 to 93.9
Nickel (Ni), % 70.1 to 73.5
0 to 0.010
Phosphorus (P), % 0 to 0.020
0
Selenium (Se), % 0 to 0.0050
0
Silicon (Si), % 7.0 to 7.5
0
Sulfur (S), % 0 to 0.020
0
Titanium (Ti), % 0 to 0.050
0
Zinc (Zn), % 0
5.5 to 6.5
Zirconium (Zr), % 0 to 0.050
0.6 to 1.0
Residuals, % 0
0 to 0.3