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EN 1.7231 Steel vs. Grade 361 Molybdenum

EN 1.7231 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 EN 1.7231 steel and the bottom bar is grade 361 molybdenum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
310
Elongation at Break, % 11 to 12
6.3
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 73
120
Tensile Strength: Ultimate (UTS), MPa 790 to 930
620
Tensile Strength: Yield (Proof), MPa 570 to 800
530

Thermal Properties

Latent Heat of Fusion, J/g 250
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 1.5
28
Embodied Energy, MJ/kg 20
330
Embodied Water, L/kg 51
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 87 to 100
37
Resilience: Unit (Modulus of Resilience), kJ/m3 870 to 1700
450
Stiffness to Weight: Axial, points 13
17
Stiffness to Weight: Bending, points 24
22
Strength to Weight: Axial, points 28 to 33
17
Strength to Weight: Bending, points 24 to 27
16
Thermal Shock Resistance, points 23 to 27
21

Alloy Composition

Carbon (C), % 0.38 to 0.45
0 to 0.010
Chromium (Cr), % 0.8 to 1.2
0
Iron (Fe), % 96.4 to 98.1
0 to 0.010
Manganese (Mn), % 0.6 to 1.0
0
Molybdenum (Mo), % 0.15 to 0.3
99.9 to 100
Nickel (Ni), % 0
0 to 0.0050
Nitrogen (N), % 0
0 to 0.0020
Oxygen (O), % 0
0 to 0.0070
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.6
0 to 0.010
Sulfur (S), % 0 to 0.030
0