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ASTM A202 Steel vs. Type 4 Niobium

ASTM A202 steel belongs to the iron alloys classification, while Type 4 niobium belongs to the otherwise unclassified metals. There are 21 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is ASTM A202 steel and the bottom bar is Type 4 niobium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180 to 200
120
Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 17 to 18
23
Poisson's Ratio 0.29
0.4
Shear Modulus, GPa 73
38
Tensile Strength: Ultimate (UTS), MPa 590 to 670
220
Tensile Strength: Yield (Proof), MPa 350 to 360
140

Thermal Properties

Latent Heat of Fusion, J/g 260
310
Specific Heat Capacity, J/kg-K 470
270
Thermal Conductivity, W/m-K 52
42
Thermal Expansion, µm/m-K 13
7.3

Otherwise Unclassified Properties

Density, g/cm3 7.8
8.6
Embodied Water, L/kg 49
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 93 to 96
44
Resilience: Unit (Modulus of Resilience), kJ/m3 330 to 350
93
Stiffness to Weight: Axial, points 13
6.8
Stiffness to Weight: Bending, points 24
18
Strength to Weight: Axial, points 21 to 24
7.2
Strength to Weight: Bending, points 20 to 22
9.5
Thermal Diffusivity, mm2/s 14
18
Thermal Shock Resistance, points 17 to 20
21