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Grade 366 Molybdenum vs. ASTM A203 Steel

Grade 366 molybdenum belongs to the otherwise unclassified metals classification, while ASTM A203 steel belongs to the iron alloys. 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 grade 366 molybdenum and the bottom bar is ASTM A203 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 300
190
Elongation at Break, % 2.2
22 to 26
Poisson's Ratio 0.3
0.29
Shear Modulus, GPa 120
73
Tensile Strength: Ultimate (UTS), MPa 580
520 to 590
Tensile Strength: Yield (Proof), MPa 470
290 to 390

Thermal Properties

Latent Heat of Fusion, J/g 310
250
Specific Heat Capacity, J/kg-K 210
470
Thermal Expansion, µm/m-K 7.6
13

Otherwise Unclassified Properties

Density, g/cm3 12
7.9
Embodied Carbon, kg CO2/kg material 27
1.6 to 1.7
Embodied Energy, MJ/kg 340
21 to 23
Embodied Water, L/kg 300
50 to 52

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12
110 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 370
230 to 410
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 18
24
Strength to Weight: Axial, points 13
18 to 21
Strength to Weight: Bending, points 13
18 to 20
Thermal Shock Resistance, points 18
15 to 17