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EN 1.7779 Steel vs. Grade 365 Molybdenum

EN 1.7779 steel belongs to the iron alloys classification, while grade 365 molybdenum belongs to the otherwise unclassified metals. There are 20 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is EN 1.7779 steel and the bottom bar is grade 365 molybdenum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
310
Elongation at Break, % 16
6.3
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 73
120
Tensile Strength: Ultimate (UTS), MPa 810
620
Tensile Strength: Yield (Proof), MPa 660
530

Thermal Properties

Latent Heat of Fusion, J/g 260
370
Specific Heat Capacity, J/kg-K 470
250
Thermal Expansion, µm/m-K 13
7.0

Otherwise Unclassified Properties

Density, g/cm3 7.8
10
Embodied Carbon, kg CO2/kg material 2.8
28
Embodied Energy, MJ/kg 41
330
Embodied Water, L/kg 64
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
37
Resilience: Unit (Modulus of Resilience), kJ/m3 1150
450
Stiffness to Weight: Axial, points 13
17
Stiffness to Weight: Bending, points 24
22
Strength to Weight: Axial, points 29
17
Strength to Weight: Bending, points 25
16
Thermal Shock Resistance, points 23
21

Alloy Composition

Aluminum (Al), % 0 to 0.040
0
Carbon (C), % 0.17 to 0.23
0 to 0.010
Chromium (Cr), % 3.0 to 3.3
0
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 93.8 to 95.4
0 to 0.010
Manganese (Mn), % 0.3 to 0.5
0
Molybdenum (Mo), % 0.5 to 0.6
99.9 to 100
Nickel (Ni), % 0 to 0.3
0 to 0.0020
Nitrogen (N), % 0
0 to 0.0020
Oxygen (O), % 0
0 to 0.0015
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0.15 to 0.35
0 to 0.010
Sulfur (S), % 0 to 0.010
0
Vanadium (V), % 0.45 to 0.55
0