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ASTM Grade HN Steel vs. Grade 360 Molybdenum

ASTM grade HN steel belongs to the iron alloys classification, while grade 360 molybdenum belongs to the otherwise unclassified metals. There are 17 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is ASTM grade HN steel and the bottom bar is grade 360 molybdenum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
310
Elongation at Break, % 9.0
6.3 to 17
Poisson's Ratio 0.28
0.31
Shear Modulus, GPa 77
120
Tensile Strength: Ultimate (UTS), MPa 500
430 to 620

Thermal Properties

Latent Heat of Fusion, J/g 310
370
Specific Heat Capacity, J/kg-K 480
250
Thermal Expansion, µm/m-K 16
7.0

Otherwise Unclassified Properties

Density, g/cm3 7.9
10
Embodied Carbon, kg CO2/kg material 4.6
28
Embodied Energy, MJ/kg 66
330
Embodied Water, L/kg 180
360

Common Calculations

Stiffness to Weight: Axial, points 14
17
Stiffness to Weight: Bending, points 25
22
Strength to Weight: Axial, points 17
12 to 17
Strength to Weight: Bending, points 18
12 to 16
Thermal Shock Resistance, points 11
14 to 21

Alloy Composition

Carbon (C), % 0.2 to 0.5
0 to 0.030
Chromium (Cr), % 19 to 23
0
Iron (Fe), % 44.9 to 57.8
0 to 0.010
Manganese (Mn), % 0 to 2.0
0
Molybdenum (Mo), % 0 to 0.5
99.9 to 100
Nickel (Ni), % 23 to 27
0 to 0.0020
Nitrogen (N), % 0
0 to 0.0020
Oxygen (O), % 0
0 to 0.0015
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 2.0
0 to 0.010
Sulfur (S), % 0 to 0.040
0