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SAE-AISI M33 Steel vs. Type 1 Niobium

SAE-AISI M33 steel belongs to the iron alloys classification, while Type 1 niobium belongs to the otherwise unclassified metals. There are 16 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 SAE-AISI M33 steel and the bottom bar is Type 1 niobium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Poisson's Ratio 0.29
0.4
Shear Modulus, GPa 78
38
Tensile Strength: Ultimate (UTS), MPa 810 to 2210
140

Thermal Properties

Latent Heat of Fusion, J/g 270
320
Specific Heat Capacity, J/kg-K 440
270
Thermal Conductivity, W/m-K 20
52
Thermal Expansion, µm/m-K 12
7.3

Otherwise Unclassified Properties

Density, g/cm3 8.2
8.6
Embodied Water, L/kg 150
160

Common Calculations

Stiffness to Weight: Axial, points 14
6.8
Stiffness to Weight: Bending, points 24
18
Strength to Weight: Axial, points 27 to 75
4.6
Strength to Weight: Bending, points 24 to 46
7.1
Thermal Diffusivity, mm2/s 5.5
23
Thermal Shock Resistance, points 25 to 68
13

Alloy Composition

Carbon (C), % 0.85 to 0.92
0 to 0.010
Chromium (Cr), % 3.5 to 4.0
0
Cobalt (Co), % 7.8 to 8.8
0
Copper (Cu), % 0 to 0.25
0
Hafnium (Hf), % 0
0 to 0.020
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 71.4 to 76.3
0 to 0.0050
Manganese (Mn), % 0.15 to 0.4
0
Molybdenum (Mo), % 9.0 to 10
0 to 0.010
Nickel (Ni), % 0 to 0.3
0 to 0.0050
Niobium (Nb), % 0
99.7 to 100
Nitrogen (N), % 0
0 to 0.010
Oxygen (O), % 0
0 to 0.015
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0.15 to 0.5
0 to 0.0050
Sulfur (S), % 0 to 0.030
0
Tantalum (Ta), % 0
0 to 0.1
Titanium (Ti), % 0
0 to 0.020
Tungsten (W), % 1.3 to 2.1
0 to 0.030
Vanadium (V), % 1.0 to 1.4
0
Zirconium (Zr), % 0
0 to 0.020