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SAE-AISI H19 Steel vs. Type 4 Niobium

SAE-AISI H19 steel belongs to the iron alloys classification, while Type 4 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 H19 steel and the bottom bar is Type 4 niobium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Poisson's Ratio 0.29
0.4
Shear Modulus, GPa 75
38
Tensile Strength: Ultimate (UTS), MPa 720 to 1990
220

Thermal Properties

Latent Heat of Fusion, J/g 260
310
Specific Heat Capacity, J/kg-K 460
270
Thermal Conductivity, W/m-K 29
42
Thermal Expansion, µm/m-K 12
7.3

Otherwise Unclassified Properties

Density, g/cm3 8.2
8.6
Embodied Water, L/kg 110
160

Common Calculations

Stiffness to Weight: Axial, points 13
6.8
Stiffness to Weight: Bending, points 24
18
Strength to Weight: Axial, points 24 to 68
7.2
Strength to Weight: Bending, points 22 to 43
9.5
Thermal Diffusivity, mm2/s 7.9
18
Thermal Shock Resistance, points 21 to 59
21

Alloy Composition

Carbon (C), % 0.32 to 0.45
0 to 0.010
Chromium (Cr), % 4.0 to 4.8
0
Cobalt (Co), % 4.0 to 4.5
0
Copper (Cu), % 0 to 0.25
0
Hafnium (Hf), % 0
0 to 0.020
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 81.4 to 85.5
0 to 0.010
Manganese (Mn), % 0.2 to 0.5
0
Molybdenum (Mo), % 0.3 to 0.55
0 to 0.050
Nickel (Ni), % 0 to 0.3
0 to 0.0050
Niobium (Nb), % 0
98.1 to 99.2
Nitrogen (N), % 0
0 to 0.010
Oxygen (O), % 0
0 to 0.025
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0.2 to 0.5
0 to 0.0050
Sulfur (S), % 0 to 0.030
0
Tantalum (Ta), % 0
0 to 0.5
Titanium (Ti), % 0
0 to 0.020
Tungsten (W), % 3.8 to 4.5
0 to 0.050
Vanadium (V), % 1.8 to 2.2
0
Zirconium (Zr), % 0
0.8 to 1.2