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ASTM A369 Grade FP92 vs. ZK51A Magnesium

ASTM A369 grade FP92 belongs to the iron alloys classification, while ZK51A magnesium belongs to the magnesium 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 ASTM A369 grade FP92 and the bottom bar is ZK51A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
45
Elongation at Break, % 19
4.7
Fatigue Strength, MPa 330
62
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
18
Shear Strength, MPa 440
160
Tensile Strength: Ultimate (UTS), MPa 710
240
Tensile Strength: Yield (Proof), MPa 490
150

Thermal Properties

Latent Heat of Fusion, J/g 260
340
Maximum Temperature: Mechanical, °C 590
120
Melting Completion (Liquidus), °C 1490
640
Melting Onset (Solidus), °C 1450
550
Specific Heat Capacity, J/kg-K 470
970
Thermal Conductivity, W/m-K 26
110
Thermal Expansion, µm/m-K 13
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.3
28
Electrical Conductivity: Equal Weight (Specific), % IACS 10
140

Otherwise Unclassified Properties

Base Metal Price, % relative 11
13
Density, g/cm3 7.9
1.8
Embodied Carbon, kg CO2/kg material 2.8
24
Embodied Energy, MJ/kg 40
160
Embodied Water, L/kg 89
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
10
Resilience: Unit (Modulus of Resilience), kJ/m3 620
260
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
64
Strength to Weight: Axial, points 25
36
Strength to Weight: Bending, points 22
47
Thermal Diffusivity, mm2/s 6.9
61
Thermal Shock Resistance, points 19
15

Alloy Composition

Aluminum (Al), % 0 to 0.020
0
Boron (B), % 0.0010 to 0.0060
0
Carbon (C), % 0.070 to 0.13
0
Chromium (Cr), % 8.5 to 9.5
0
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 85.8 to 89.1
0
Magnesium (Mg), % 0
93.1 to 95.9
Manganese (Mn), % 0.3 to 0.6
0
Molybdenum (Mo), % 0.3 to 0.6
0
Nickel (Ni), % 0 to 0.4
0 to 0.010
Niobium (Nb), % 0.040 to 0.090
0
Nitrogen (N), % 0.030 to 0.070
0
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0 to 0.5
0
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 0 to 0.010
0
Tungsten (W), % 1.5 to 2.0
0
Vanadium (V), % 0.15 to 0.25
0
Zinc (Zn), % 0
3.6 to 5.5
Zirconium (Zr), % 0 to 0.010
0.5 to 1.0
Residuals, % 0
0 to 0.3