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EN 1.6958 Steel vs. Grade 364 Molybdenum

EN 1.6958 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 EN 1.6958 steel and the bottom bar is grade 364 molybdenum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
310
Elongation at Break, % 16
6.2 to 11
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 73
120
Tensile Strength: Ultimate (UTS), MPa 1140
580 to 720
Tensile Strength: Yield (Proof), MPa 1070
350 to 620

Thermal Properties

Latent Heat of Fusion, J/g 250
370
Specific Heat Capacity, J/kg-K 470
250
Thermal Expansion, µm/m-K 11
7.0

Otherwise Unclassified Properties

Density, g/cm3 7.9
10
Embodied Carbon, kg CO2/kg material 2.0
28
Embodied Energy, MJ/kg 27
330
Embodied Water, L/kg 60
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
43 to 57
Resilience: Unit (Modulus of Resilience), kJ/m3 3050
200 to 630
Stiffness to Weight: Axial, points 13
17
Stiffness to Weight: Bending, points 24
22
Strength to Weight: Axial, points 40
16 to 20
Strength to Weight: Bending, points 31
15 to 17
Thermal Shock Resistance, points 39
19 to 24

Alloy Composition

Aluminum (Al), % 0.0050 to 0.050
0
Carbon (C), % 0.25 to 0.3
0.010 to 0.040
Chromium (Cr), % 1.2 to 1.7
0
Iron (Fe), % 92.6 to 94.5
0 to 0.010
Manganese (Mn), % 0.2 to 0.5
0
Molybdenum (Mo), % 0.35 to 0.55
99.2 to 99.5
Nickel (Ni), % 3.3 to 3.8
0 to 0.0050
Nitrogen (N), % 0
0 to 0.0020
Oxygen (O), % 0
0 to 0.030
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0.15 to 0.3
0 to 0.0050
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0
0.4 to 0.55
Vanadium (V), % 0 to 0.12
0
Zirconium (Zr), % 0
0.060 to 0.12