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SAE-AISI 1548 Steel vs. Grade 366 Molybdenum

SAE-AISI 1548 steel 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 (12, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 1548 steel 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, % 11 to 16
2.2
Poisson's Ratio 0.29
0.3
Shear Modulus, GPa 72
120
Tensile Strength: Ultimate (UTS), MPa 730 to 830
580
Tensile Strength: Yield (Proof), MPa 420 to 690
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 19
340
Embodied Water, L/kg 47
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 79 to 99
12
Resilience: Unit (Modulus of Resilience), kJ/m3 470 to 1280
370
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
18
Strength to Weight: Axial, points 26 to 30
13
Strength to Weight: Bending, points 23 to 25
13
Thermal Shock Resistance, points 23 to 27
18

Alloy Composition

Carbon (C), % 0.44 to 0.52
0 to 0.030
Iron (Fe), % 98 to 98.5
0 to 0.010
Manganese (Mn), % 1.1 to 1.4
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 0.040
0
Silicon (Si), % 0
0 to 0.010
Sulfur (S), % 0 to 0.050
0
Tungsten (W), % 0
27 to 33