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ASTM A369 Grade FP91 vs. EZ33A Magnesium

ASTM A369 grade FP91 belongs to the iron alloys classification, while EZ33A magnesium belongs to the magnesium alloys. There are 31 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 FP91 and the bottom bar is EZ33A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
55
Elastic (Young's, Tensile) Modulus, GPa 190
44
Elongation at Break, % 19
2.6
Fatigue Strength, MPa 320
70
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
17
Shear Strength, MPa 410
140
Tensile Strength: Ultimate (UTS), MPa 670
150
Tensile Strength: Yield (Proof), MPa 460
100

Thermal Properties

Latent Heat of Fusion, J/g 270
330
Maximum Temperature: Mechanical, °C 600
250
Melting Completion (Liquidus), °C 1460
640
Melting Onset (Solidus), °C 1420
570
Specific Heat Capacity, J/kg-K 470
970
Thermal Conductivity, W/m-K 26
100
Thermal Expansion, µm/m-K 13
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.9
24
Electrical Conductivity: Equal Weight (Specific), % IACS 10
110

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
25
Density, g/cm3 7.8
1.9
Embodied Carbon, kg CO2/kg material 2.6
25
Embodied Energy, MJ/kg 37
190
Embodied Water, L/kg 88
930

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
3.6
Resilience: Unit (Modulus of Resilience), kJ/m3 560
120
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
61
Strength to Weight: Axial, points 24
22
Strength to Weight: Bending, points 22
33
Thermal Diffusivity, mm2/s 6.9
54
Thermal Shock Resistance, points 18
9.2

Alloy Composition

Aluminum (Al), % 0 to 0.020
0
Carbon (C), % 0.080 to 0.12
0
Chromium (Cr), % 8.0 to 9.5
0
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 87.3 to 90.3
0
Magnesium (Mg), % 0
91.5 to 95
Manganese (Mn), % 0.3 to 0.6
0
Molybdenum (Mo), % 0.85 to 1.1
0
Nickel (Ni), % 0 to 0.4
0 to 0.010
Niobium (Nb), % 0.060 to 0.1
0
Nitrogen (N), % 0.030 to 0.070
0
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0.2 to 0.5
0
Sulfur (S), % 0 to 0.025
0
Titanium (Ti), % 0 to 0.010
0
Unspecified Rare Earths, % 0
2.5 to 4.0
Vanadium (V), % 0.18 to 0.25
0
Zinc (Zn), % 0
2.0 to 3.1
Zirconium (Zr), % 0 to 0.010
0.5 to 1.0
Residuals, % 0
0 to 0.3