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AISI 303 Stainless Steel vs. Grade 364 Molybdenum

AISI 303 stainless steel belongs to the iron alloys classification, while grade 364 molybdenum belongs to the otherwise unclassified metals. 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 AISI 303 stainless steel and the bottom bar is grade 364 molybdenum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
310
Elongation at Break, % 40 to 51
6.2 to 11
Poisson's Ratio 0.28
0.31
Shear Modulus, GPa 77
120
Tensile Strength: Ultimate (UTS), MPa 600 to 690
580 to 720
Tensile Strength: Yield (Proof), MPa 230 to 420
350 to 620

Thermal Properties

Latent Heat of Fusion, J/g 290
370
Specific Heat Capacity, J/kg-K 480
250
Thermal Expansion, µm/m-K 17
7.0

Otherwise Unclassified Properties

Density, g/cm3 7.8
10
Embodied Carbon, kg CO2/kg material 3.0
28
Embodied Energy, MJ/kg 42
330
Embodied Water, L/kg 140
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
43 to 57
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 440
200 to 630
Stiffness to Weight: Axial, points 14
17
Stiffness to Weight: Bending, points 25
22
Strength to Weight: Axial, points 21 to 25
16 to 20
Strength to Weight: Bending, points 20 to 22
15 to 17
Thermal Shock Resistance, points 13 to 15
19 to 24

Alloy Composition

Carbon (C), % 0 to 0.15
0.010 to 0.040
Chromium (Cr), % 17 to 19
0
Iron (Fe), % 67.3 to 74.9
0 to 0.010
Manganese (Mn), % 0 to 2.0
0
Molybdenum (Mo), % 0
99.2 to 99.5
Nickel (Ni), % 8.0 to 10
0 to 0.0050
Nitrogen (N), % 0
0 to 0.0020
Oxygen (O), % 0
0 to 0.030
Phosphorus (P), % 0 to 0.2
0
Silicon (Si), % 0 to 1.0
0 to 0.0050
Sulfur (S), % 0.15 to 0.35
0
Titanium (Ti), % 0
0.4 to 0.55
Zirconium (Zr), % 0
0.060 to 0.12