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ASTM A369 Grade FPA vs. Grade 366 Molybdenum

ASTM A369 grade FPA belongs to the iron alloys classification, while grade 366 molybdenum belongs to the otherwise unclassified metals. There are 20 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is ASTM A369 grade FPA and the bottom bar is grade 366 molybdenum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
300
Elongation at Break, % 27
2.2
Poisson's Ratio 0.29
0.3
Shear Modulus, GPa 73
120
Tensile Strength: Ultimate (UTS), MPa 380
580
Tensile Strength: Yield (Proof), MPa 240
470

Thermal Properties

Latent Heat of Fusion, J/g 250
310
Specific Heat Capacity, J/kg-K 470
210
Thermal Expansion, µm/m-K 12
7.6

Otherwise Unclassified Properties

Density, g/cm3 7.8
12
Embodied Carbon, kg CO2/kg material 1.4
27
Embodied Energy, MJ/kg 18
340
Embodied Water, L/kg 46
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 89
12
Resilience: Unit (Modulus of Resilience), kJ/m3 150
370
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
18
Strength to Weight: Axial, points 13
13
Strength to Weight: Bending, points 15
13
Thermal Shock Resistance, points 12
18

Alloy Composition

Carbon (C), % 0 to 0.25
0 to 0.030
Iron (Fe), % 98.3 to 99.63
0 to 0.010
Manganese (Mn), % 0.27 to 0.93
0
Molybdenum (Mo), % 0
66.9 to 73
Nickel (Ni), % 0
0 to 0.0020
Nitrogen (N), % 0
0 to 0.0020
Oxygen (O), % 0
0 to 0.0025
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0.1 to 0.5
0 to 0.010
Sulfur (S), % 0 to 0.035
0
Tungsten (W), % 0
27 to 33