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ASTM A369 Grade FPB vs. AZ92A Magnesium

ASTM A369 grade FPB belongs to the iron alloys classification, while AZ92A magnesium belongs to the magnesium alloys. There are 30 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 A369 grade FPB and the bottom bar is AZ92A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
47
Elongation at Break, % 19
2.1 to 6.8
Fatigue Strength, MPa 180
76 to 90
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
18
Shear Strength, MPa 290
97 to 160
Tensile Strength: Ultimate (UTS), MPa 470
170 to 270
Tensile Strength: Yield (Proof), MPa 270
83 to 140

Thermal Properties

Latent Heat of Fusion, J/g 250
350
Maximum Temperature: Mechanical, °C 400
130
Melting Completion (Liquidus), °C 1460
590
Melting Onset (Solidus), °C 1420
440
Specific Heat Capacity, J/kg-K 470
980
Thermal Conductivity, W/m-K 52
44 to 58
Thermal Expansion, µm/m-K 12
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
11 to 12
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
53 to 62

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
12
Density, g/cm3 7.8
1.8
Embodied Carbon, kg CO2/kg material 1.4
22
Embodied Energy, MJ/kg 18
160
Embodied Water, L/kg 46
980

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 78
4.0 to 14
Resilience: Unit (Modulus of Resilience), kJ/m3 190
73 to 220
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
67
Strength to Weight: Axial, points 17
26 to 41
Strength to Weight: Bending, points 17
38 to 51
Thermal Diffusivity, mm2/s 14
25 to 33
Thermal Shock Resistance, points 15
10 to 16

Alloy Composition

Aluminum (Al), % 0
8.3 to 9.7
Carbon (C), % 0 to 0.3
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 98.1 to 99.61
0
Magnesium (Mg), % 0
86.7 to 90
Manganese (Mn), % 0.29 to 1.1
0.1 to 0.35
Nickel (Ni), % 0
0 to 0.010
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0.1 to 0.5
0 to 0.3
Sulfur (S), % 0 to 0.035
0
Zinc (Zn), % 0
1.6 to 2.4
Residuals, % 0
0 to 0.3