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ASTM A369 Grade FP5 vs. ISO-WD32350 Magnesium

ASTM A369 grade FP5 belongs to the iron alloys classification, while ISO-WD32350 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 FP5 and the bottom bar is ISO-WD32350 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
45
Elongation at Break, % 20
5.7 to 10
Fatigue Strength, MPa 160
120 to 130
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 74
18
Shear Strength, MPa 300
150 to 170
Tensile Strength: Ultimate (UTS), MPa 470
250 to 290
Tensile Strength: Yield (Proof), MPa 240
140 to 180

Thermal Properties

Latent Heat of Fusion, J/g 260
340
Maximum Temperature: Mechanical, °C 510
95
Melting Completion (Liquidus), °C 1460
600
Melting Onset (Solidus), °C 1420
560
Specific Heat Capacity, J/kg-K 470
990
Thermal Conductivity, W/m-K 40
130
Thermal Expansion, µm/m-K 13
25

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.0
25
Electrical Conductivity: Equal Weight (Specific), % IACS 9.2
130

Otherwise Unclassified Properties

Base Metal Price, % relative 4.3
12
Density, g/cm3 7.8
1.7
Embodied Carbon, kg CO2/kg material 1.7
23
Embodied Energy, MJ/kg 23
160
Embodied Water, L/kg 69
960

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 80
14 to 23
Resilience: Unit (Modulus of Resilience), kJ/m3 140
210 to 380
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
68
Strength to Weight: Axial, points 17
39 to 46
Strength to Weight: Bending, points 17
50 to 55
Thermal Diffusivity, mm2/s 11
73
Thermal Shock Resistance, points 13
16 to 18

Alloy Composition

Aluminum (Al), % 0
0 to 0.1
Carbon (C), % 0 to 0.15
0
Chromium (Cr), % 4.0 to 6.0
0
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 92.1 to 95.3
0 to 0.060
Magnesium (Mg), % 0
95.7 to 97.7
Manganese (Mn), % 0.3 to 0.6
0.6 to 1.3
Molybdenum (Mo), % 0.45 to 0.65
0
Nickel (Ni), % 0
0 to 0.0050
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.5
0 to 0.1
Sulfur (S), % 0 to 0.025
0
Zinc (Zn), % 0
1.8 to 2.3
Residuals, % 0
0 to 0.3