SAE-AISI 4161 Steel vs. Grade 361 Molybdenum

SAE-AISI 4161 steel 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 SAE-AISI 4161 steel and the bottom bar is grade 361 molybdenum.

SAE-AISI 4161 (G41610) Cr-Mo Steel Grade 361 Molybdenum

Metric UnitsUS Customary Units

Mechanical Properties

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

Elongation at Break, %		20
Elongation at Break, %		6.3

Poisson's Ratio		0.29
Poisson's Ratio		0.31

Shear Modulus, GPa		73
Shear Modulus, GPa		120

Tensile Strength: Ultimate (UTS), MPa		680
Tensile Strength: Ultimate (UTS), MPa		620

Tensile Strength: Yield (Proof), MPa		410
Tensile Strength: Yield (Proof), MPa		530

Thermal Properties

Latent Heat of Fusion, J/g		250
Latent Heat of Fusion, J/g		370

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

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

Otherwise Unclassified Properties

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

Embodied Carbon, kg CO₂/kg material		1.5
Embodied Carbon, kg CO₂/kg material		28

Embodied Energy, MJ/kg		20
Embodied Energy, MJ/kg		330

Embodied Water, L/kg		50
Embodied Water, L/kg		360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m³		120
Resilience: Ultimate (Unit Rupture Work), MJ/m³		37

Resilience: Unit (Modulus of Resilience), kJ/m³		460
Resilience: Unit (Modulus of Resilience), kJ/m³		450

Stiffness to Weight: Axial, points		13
Stiffness to Weight: Axial, points		17

Stiffness to Weight: Bending, points		24
Stiffness to Weight: Bending, points		22

Strength to Weight: Axial, points		24
Strength to Weight: Axial, points		17

Strength to Weight: Bending, points		22
Strength to Weight: Bending, points		16

Thermal Shock Resistance, points		22
Thermal Shock Resistance, points		21

Alloy Composition

Carbon (C), %		0.56 to 0.64
Carbon (C), %		0 to 0.010

Chromium (Cr), %		0.7 to 0.9
Chromium (Cr), %		0

Iron (Fe), %		96.7 to 97.6
Iron (Fe), %		0 to 0.010

Manganese (Mn), %		0.75 to 1.0
Manganese (Mn), %		0

Molybdenum (Mo), %		0.25 to 0.35
Molybdenum (Mo), %		99.9 to 100

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

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

Oxygen (O), %		0
Oxygen (O), %		0 to 0.0070

Phosphorus (P), %		0 to 0.035
Phosphorus (P), %		0

Silicon (Si), %		0.15 to 0.35
Silicon (Si), %		0 to 0.010

Sulfur (S), %		0 to 0.040
Sulfur (S), %		0