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AWS BNi-9 vs. M1A Magnesium

AWS BNi-9 belongs to the nickel alloys classification, while M1A magnesium belongs to the magnesium alloys. There are 19 material properties with values for both materials. Properties with values for just one material (12, 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-9 and the bottom bar is M1A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
45
Poisson's Ratio 0.3
0.29
Shear Modulus, GPa 72
18
Tensile Strength: Ultimate (UTS), MPa 580
230

Thermal Properties

Latent Heat of Fusion, J/g 300
350
Melting Completion (Liquidus), °C 1060
610
Melting Onset (Solidus), °C 1060
580
Specific Heat Capacity, J/kg-K 480
990
Thermal Expansion, µm/m-K 12
26

Otherwise Unclassified Properties

Base Metal Price, % relative 60
12
Density, g/cm3 8.4
1.7
Embodied Carbon, kg CO2/kg material 9.3
24
Embodied Energy, MJ/kg 130
160
Embodied Water, L/kg 260
970

Common Calculations

Stiffness to Weight: Axial, points 12
15
Stiffness to Weight: Bending, points 23
71
Strength to Weight: Axial, points 19
38
Strength to Weight: Bending, points 18
49
Thermal Shock Resistance, points 19
13

Alloy Composition

Aluminum (Al), % 0 to 0.050
0
Boron (B), % 3.3 to 4.0
0
Calcium (Ca), % 0
0 to 0.3
Carbon (C), % 0 to 0.060
0
Chromium (Cr), % 13.5 to 16.5
0
Cobalt (Co), % 0 to 0.1
0
Copper (Cu), % 0
0 to 0.050
Iron (Fe), % 0 to 1.5
0
Magnesium (Mg), % 0
97.2 to 98.8
Manganese (Mn), % 0
1.2 to 2.0
Nickel (Ni), % 77.1 to 83.3
0 to 0.010
Phosphorus (P), % 0 to 0.020
0
Selenium (Se), % 0 to 0.0050
0
Silicon (Si), % 0
0 to 0.1
Sulfur (S), % 0 to 0.020
0
Titanium (Ti), % 0 to 0.050
0
Zirconium (Zr), % 0 to 0.050
0
Residuals, % 0
0 to 0.3