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ASTM B817 Type I vs. AZ31C Magnesium

ASTM B817 type I belongs to the titanium alloys classification, while AZ31C magnesium belongs to the magnesium alloys. There are 29 material properties with values for both materials. Properties with values for just one material (2, 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 ASTM B817 type I and the bottom bar is AZ31C magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
45
Elongation at Break, % 4.0 to 13
12
Fatigue Strength, MPa 360 to 520
150
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 40
17
Tensile Strength: Ultimate (UTS), MPa 770 to 960
260
Tensile Strength: Yield (Proof), MPa 700 to 860
200

Thermal Properties

Latent Heat of Fusion, J/g 410
350
Maximum Temperature: Mechanical, °C 340
110
Melting Completion (Liquidus), °C 1600
600
Melting Onset (Solidus), °C 1550
550
Specific Heat Capacity, J/kg-K 560
990
Thermal Conductivity, W/m-K 7.1
130
Thermal Expansion, µm/m-K 9.6
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.0
19
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
98

Otherwise Unclassified Properties

Base Metal Price, % relative 36
12
Density, g/cm3 4.4
1.7
Embodied Carbon, kg CO2/kg material 38
23
Embodied Energy, MJ/kg 610
160
Embodied Water, L/kg 200
970

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 30 to 120
28
Resilience: Unit (Modulus of Resilience), kJ/m3 2310 to 3540
440
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 35
70
Strength to Weight: Axial, points 48 to 60
42
Strength to Weight: Bending, points 42 to 49
53
Thermal Diffusivity, mm2/s 2.9
74
Thermal Shock Resistance, points 54 to 68
16

Alloy Composition

Aluminum (Al), % 5.5 to 6.8
2.4 to 3.6
Carbon (C), % 0 to 0.1
0
Chlorine (Cl), % 0 to 0.2
0
Copper (Cu), % 0
0 to 0.1
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.4
0
Magnesium (Mg), % 0
93.4 to 97
Manganese (Mn), % 0
0.15 to 1.0
Nickel (Ni), % 0
0 to 0.030
Nitrogen (N), % 0 to 0.040
0
Oxygen (O), % 0 to 0.3
0
Silicon (Si), % 0 to 0.1
0 to 0.1
Sodium (Na), % 0 to 0.2
0
Titanium (Ti), % 87 to 91
0
Vanadium (V), % 3.5 to 4.5
0
Zinc (Zn), % 0
0.5 to 1.5
Residuals, % 0
0 to 0.3