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AWS BMg-1 vs. ASTM B817 Type II

AWS BMg-1 belongs to the magnesium alloys classification, while ASTM B817 type II belongs to the titanium alloys. There are 25 material properties with values for both materials. Properties with values for just one material (7, 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 ASTM B817 type II.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 47
100
Elongation at Break, % 3.8
3.0 to 13
Fatigue Strength, MPa 72
390 to 530
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 18
40
Tensile Strength: Ultimate (UTS), MPa 180
900 to 960
Tensile Strength: Yield (Proof), MPa 110
780 to 900

Thermal Properties

Latent Heat of Fusion, J/g 350
400
Maximum Temperature: Mechanical, °C 130
350
Melting Completion (Liquidus), °C 600
1580
Melting Onset (Solidus), °C 440
1530
Specific Heat Capacity, J/kg-K 980
550
Thermal Expansion, µm/m-K 26
9.9

Otherwise Unclassified Properties

Base Metal Price, % relative 12
37
Density, g/cm3 1.8
4.6
Embodied Carbon, kg CO2/kg material 22
40
Embodied Energy, MJ/kg 160
650
Embodied Water, L/kg 980
220

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.9
26 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 120
2890 to 3890
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 66
34
Strength to Weight: Axial, points 27
55 to 58
Strength to Weight: Bending, points 39
45 to 47
Thermal Shock Resistance, points 10
62 to 66

Alloy Composition


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Aluminum (Al), % 8.3 to 9.7
5.0 to 6.0
Beryllium (Be), % 0.00020 to 0.00080
0
Carbon (C), % 0
0 to 0.1
Chlorine (Cl), % 0
0 to 0.2
Copper (Cu), % 0 to 0.050
0.35 to 1.0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0 to 0.0050
0.35 to 1.0
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 0.040
Oxygen (O), % 0
0 to 0.3
Silicon (Si), % 0 to 0.050
0 to 0.1
Sodium (Na), % 0
0 to 0.2
Tin (Sn), % 0
1.5 to 2.5
Titanium (Ti), % 0
82.1 to 87.8
Vanadium (V), % 0
5.0 to 6.0
Zinc (Zn), % 1.7 to 2.3
0
Residuals, % 0 to 0.3
0 to 0.4