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Grade 364 Molybdenum vs. AISI 420 Stainless Steel

Grade 364 molybdenum belongs to the otherwise unclassified metals classification, while AISI 420 stainless steel belongs to the iron alloys. There are 20 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is grade 364 molybdenum and the bottom bar is AISI 420 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 310
190
Elongation at Break, % 6.2 to 11
8.0 to 15
Poisson's Ratio 0.31
0.28
Shear Modulus, GPa 120
76
Tensile Strength: Ultimate (UTS), MPa 580 to 720
690 to 1720
Tensile Strength: Yield (Proof), MPa 350 to 620
380 to 1310

Thermal Properties

Latent Heat of Fusion, J/g 370
280
Specific Heat Capacity, J/kg-K 250
480
Thermal Expansion, µm/m-K 7.0
10

Otherwise Unclassified Properties

Density, g/cm3 10
7.7
Embodied Carbon, kg CO2/kg material 28
2.0
Embodied Energy, MJ/kg 330
28
Embodied Water, L/kg 360
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 43 to 57
88 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 200 to 630
380 to 4410
Stiffness to Weight: Axial, points 17
14
Stiffness to Weight: Bending, points 22
25
Strength to Weight: Axial, points 16 to 20
25 to 62
Strength to Weight: Bending, points 15 to 17
22 to 41
Thermal Shock Resistance, points 19 to 24
25 to 62

Alloy Composition

Carbon (C), % 0.010 to 0.040
0.15 to 0.4
Chromium (Cr), % 0
12 to 14
Iron (Fe), % 0 to 0.010
82.3 to 87.9
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 99.2 to 99.5
0 to 0.5
Nickel (Ni), % 0 to 0.0050
0 to 0.75
Nitrogen (N), % 0 to 0.0020
0
Oxygen (O), % 0 to 0.030
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.0050
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0.4 to 0.55
0
Zirconium (Zr), % 0.060 to 0.12
0