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ASTM A369 Grade FPA vs. Grade 361 Molybdenum

ASTM A369 grade FPA belongs to the iron alloys classification, while grade 361 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 361 molybdenum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
310
Elongation at Break, % 27
6.3
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 73
120
Tensile Strength: Ultimate (UTS), MPa 380
620
Tensile Strength: Yield (Proof), MPa 240
530

Thermal Properties

Latent Heat of Fusion, J/g 250
370
Specific Heat Capacity, J/kg-K 470
250
Thermal Expansion, µm/m-K 12
7.0

Otherwise Unclassified Properties

Density, g/cm3 7.8
10
Embodied Carbon, kg CO2/kg material 1.4
28
Embodied Energy, MJ/kg 18
330
Embodied Water, L/kg 46
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 89
37
Resilience: Unit (Modulus of Resilience), kJ/m3 150
450
Stiffness to Weight: Axial, points 13
17
Stiffness to Weight: Bending, points 24
22
Strength to Weight: Axial, points 13
17
Strength to Weight: Bending, points 15
16
Thermal Shock Resistance, points 12
21

Alloy Composition

Carbon (C), % 0 to 0.25
0 to 0.010
Iron (Fe), % 98.3 to 99.63
0 to 0.010
Manganese (Mn), % 0.27 to 0.93
0
Molybdenum (Mo), % 0
99.9 to 100
Nickel (Ni), % 0
0 to 0.0050
Nitrogen (N), % 0
0 to 0.0020
Oxygen (O), % 0
0 to 0.0070
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