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ASTM A514 Steel vs. Type 4 Niobium

ASTM A514 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 A514 steel and the bottom bar is Type 4 niobium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240 to 250
120
Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 18 to 21
23
Poisson's Ratio 0.29
0.4
Shear Modulus, GPa 73
38
Tensile Strength: Ultimate (UTS), MPa 790 to 830
220
Tensile Strength: Yield (Proof), MPa 690 to 770
140

Thermal Properties

Latent Heat of Fusion, J/g 250 to 260
310
Specific Heat Capacity, J/kg-K 470
270
Thermal Conductivity, W/m-K 37 to 51
42
Thermal Expansion, µm/m-K 13
7.3

Otherwise Unclassified Properties

Density, g/cm3 7.8 to 7.9
8.6
Embodied Water, L/kg 48 to 57
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 170
44
Resilience: Unit (Modulus of Resilience), kJ/m3 1280 to 1590
93
Stiffness to Weight: Axial, points 13
6.8
Stiffness to Weight: Bending, points 24
18
Strength to Weight: Axial, points 28 to 29
7.2
Strength to Weight: Bending, points 24 to 25
9.5
Thermal Diffusivity, mm2/s 10 to 14
18
Thermal Shock Resistance, points 23 to 24
21