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SAE-AISI D7 Steel vs. Grade 366 Molybdenum

SAE-AISI D7 steel belongs to the iron alloys classification, while grade 366 molybdenum belongs to the otherwise unclassified metals. There are 16 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI D7 steel and the bottom bar is grade 366 molybdenum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
300
Poisson's Ratio 0.28
0.3
Shear Modulus, GPa 73
120
Tensile Strength: Ultimate (UTS), MPa 800 to 2120
580

Thermal Properties

Latent Heat of Fusion, J/g 270
310
Specific Heat Capacity, J/kg-K 480
210
Thermal Expansion, µm/m-K 11
7.6

Otherwise Unclassified Properties

Density, g/cm3 7.6
12
Embodied Carbon, kg CO2/kg material 11
27
Embodied Energy, MJ/kg 180
340
Embodied Water, L/kg 130
300

Common Calculations

Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
18
Strength to Weight: Axial, points 29 to 78
13
Strength to Weight: Bending, points 25 to 48
13
Thermal Shock Resistance, points 27 to 72
18

Alloy Composition

Carbon (C), % 2.2 to 2.5
0 to 0.030
Chromium (Cr), % 11.5 to 13.5
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 76.6 to 81.9
0 to 0.010
Manganese (Mn), % 0 to 0.6
0
Molybdenum (Mo), % 0.7 to 1.2
66.9 to 73
Nickel (Ni), % 0 to 0.3
0 to 0.0020
Nitrogen (N), % 0
0 to 0.0020
Oxygen (O), % 0
0 to 0.0025
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 0.6
0 to 0.010
Sulfur (S), % 0 to 0.030
0
Tungsten (W), % 0
27 to 33
Vanadium (V), % 3.8 to 4.4
0