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AWS BMg-1 vs. Grade 5 Titanium

AWS BMg-1 belongs to the magnesium alloys classification, while grade 5 titanium belongs to the titanium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, 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 BMg-1 and the bottom bar is grade 5 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 47
110
Elongation at Break, % 3.8
8.6 to 11
Fatigue Strength, MPa 72
530 to 630
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 18
40
Shear Strength, MPa 100
600 to 710
Tensile Strength: Ultimate (UTS), MPa 180
1000 to 1190
Tensile Strength: Yield (Proof), MPa 110
910 to 1110

Thermal Properties

Latent Heat of Fusion, J/g 350
410
Maximum Temperature: Mechanical, °C 130
330
Melting Completion (Liquidus), °C 600
1610
Melting Onset (Solidus), °C 440
1650
Specific Heat Capacity, J/kg-K 980
560
Thermal Conductivity, W/m-K 76
6.8
Thermal Expansion, µm/m-K 26
8.9

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
1.0
Electrical Conductivity: Equal Weight (Specific), % IACS 55
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 12
36
Density, g/cm3 1.8
4.4
Embodied Carbon, kg CO2/kg material 22
38
Embodied Energy, MJ/kg 160
610
Embodied Water, L/kg 980
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.9
100 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 120
3980 to 5880
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 66
35
Strength to Weight: Axial, points 27
62 to 75
Strength to Weight: Bending, points 39
50 to 56
Thermal Diffusivity, mm2/s 43
2.7
Thermal Shock Resistance, points 10
76 to 91

Alloy Composition


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Aluminum (Al), % 8.3 to 9.7
5.5 to 6.8
Beryllium (Be), % 0.00020 to 0.00080
0
Carbon (C), % 0
0 to 0.080
Copper (Cu), % 0 to 0.050
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0 to 0.0050
0 to 0.4
Magnesium (Mg), % 86.1 to 89.8
0
Manganese (Mn), % 0.15 to 1.5
0
Nickel (Ni), % 0 to 0.0050
0
Nitrogen (N), % 0
0 to 0.050
Oxygen (O), % 0
0 to 0.2
Silicon (Si), % 0 to 0.050
0
Titanium (Ti), % 0
87.4 to 91
Vanadium (V), % 0
3.5 to 4.5
Yttrium (Y), % 0
0 to 0.0050
Zinc (Zn), % 1.7 to 2.3
0
Residuals, % 0 to 0.3
0 to 0.4