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ASTM A266 Carbon Steel vs. Type 2 Niobium

ASTM A266 carbon steel belongs to the iron alloys classification, while Type 2 niobium belongs to the otherwise unclassified metals. There are 21 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 ASTM A266 carbon steel and the bottom bar is Type 2 niobium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150 to 180
110
Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 21 to 26
29
Poisson's Ratio 0.29
0.4
Shear Modulus, GPa 73
38
Tensile Strength: Ultimate (UTS), MPa 500 to 600
140
Tensile Strength: Yield (Proof), MPa 230 to 290
82

Thermal Properties

Latent Heat of Fusion, J/g 250
320
Specific Heat Capacity, J/kg-K 470
270
Thermal Conductivity, W/m-K 51 to 52
52
Thermal Expansion, µm/m-K 12
7.3

Otherwise Unclassified Properties

Density, g/cm3 7.8
8.6
Embodied Water, L/kg 46 to 47
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
35
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 230
32
Stiffness to Weight: Axial, points 13
6.8
Stiffness to Weight: Bending, points 24
18
Strength to Weight: Axial, points 18 to 21
4.6
Strength to Weight: Bending, points 18 to 20
7.1
Thermal Diffusivity, mm2/s 14
23
Thermal Shock Resistance, points 16 to 19
13