Grade 364 Molybdenum vs. SAE-AISI A9 Steel

Grade 364 molybdenum belongs to the otherwise unclassified metals classification, while SAE-AISI A9 steel belongs to the iron alloys. There are 16 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 grade 364 molybdenum and the bottom bar is SAE-AISI A9 steel.

Grade 364 Molybdenum SAE-AISI A9 (T30109) Air-Hardening Steel

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		310
Elastic (Young's, Tensile) Modulus, GPa		190

Poisson's Ratio		0.31
Poisson's Ratio		0.29

Shear Modulus, GPa		120
Shear Modulus, GPa		74

Tensile Strength: Ultimate (UTS), MPa		580 to 720
Tensile Strength: Ultimate (UTS), MPa		770 to 2030

Thermal Properties

Latent Heat of Fusion, J/g		370
Latent Heat of Fusion, J/g		280

Specific Heat Capacity, J/kg-K		250
Specific Heat Capacity, J/kg-K		470

Thermal Expansion, µm/m-K		7.0
Thermal Expansion, µm/m-K		12

Otherwise Unclassified Properties

Density, g/cm³		10
Density, g/cm³		7.8

Embodied Carbon, kg CO₂/kg material		28
Embodied Carbon, kg CO₂/kg material		4.7

Embodied Energy, MJ/kg		330
Embodied Energy, MJ/kg		70

Embodied Water, L/kg		360
Embodied Water, L/kg		82

Common Calculations

Stiffness to Weight: Axial, points		17
Stiffness to Weight: Axial, points		14

Stiffness to Weight: Bending, points		22
Stiffness to Weight: Bending, points		25

Strength to Weight: Axial, points		16 to 20
Strength to Weight: Axial, points		28 to 73

Strength to Weight: Bending, points		15 to 17
Strength to Weight: Bending, points		24 to 46

Thermal Shock Resistance, points		19 to 24
Thermal Shock Resistance, points		25 to 66

Alloy Composition

Carbon (C), %		0.010 to 0.040
Carbon (C), %		0.45 to 0.55

Chromium (Cr), %		0
Chromium (Cr), %		4.8 to 5.5

Copper (Cu), %		0
Copper (Cu), %		0 to 0.25

Iron (Fe), %		0 to 0.010
Iron (Fe), %		87 to 90.5

Manganese (Mn), %		0
Manganese (Mn), %		0 to 0.5

Molybdenum (Mo), %		99.2 to 99.5
Molybdenum (Mo), %		1.3 to 1.8

Nickel (Ni), %		0 to 0.0050
Nickel (Ni), %		1.3 to 1.8

Nitrogen (N), %		0 to 0.0020
Nitrogen (N), %		0

Oxygen (O), %		0 to 0.030
Oxygen (O), %		0

Phosphorus (P), %		0
Phosphorus (P), %		0 to 0.030

Silicon (Si), %		0 to 0.0050
Silicon (Si), %		1.0 to 1.2

Sulfur (S), %		0
Sulfur (S), %		0 to 0.030

Titanium (Ti), %		0.4 to 0.55
Titanium (Ti), %		0

Vanadium (V), %		0
Vanadium (V), %		0.8 to 1.4

Zirconium (Zr), %		0.060 to 0.12
Zirconium (Zr), %		0