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SAE-AISI 1212 Steel vs. Type 4 Niobium

SAE-AISI 1212 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 (11, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 1212 steel and the bottom bar is Type 4 niobium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140 to 180
120
Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 11 to 28
23
Poisson's Ratio 0.29
0.4
Shear Modulus, GPa 73
38
Tensile Strength: Ultimate (UTS), MPa 440 to 620
220
Tensile Strength: Yield (Proof), MPa 260 to 460
140

Thermal Properties

Latent Heat of Fusion, J/g 250
310
Specific Heat Capacity, J/kg-K 470
270
Thermal Conductivity, W/m-K 52
42
Thermal Expansion, µm/m-K 12
7.3

Otherwise Unclassified Properties

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

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 64 to 110
44
Resilience: Unit (Modulus of Resilience), kJ/m3 180 to 560
93
Stiffness to Weight: Axial, points 13
6.8
Stiffness to Weight: Bending, points 24
18
Strength to Weight: Axial, points 15 to 22
7.2
Strength to Weight: Bending, points 16 to 20
9.5
Thermal Diffusivity, mm2/s 14
18
Thermal Shock Resistance, points 14 to 20
21

Alloy Composition

Carbon (C), % 0 to 0.13
0 to 0.010
Hafnium (Hf), % 0
0 to 0.020
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 98.5 to 99.07
0 to 0.010
Manganese (Mn), % 0.7 to 1.0
0
Molybdenum (Mo), % 0
0 to 0.050
Nickel (Ni), % 0
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), % 0.070 to 0.12
0
Silicon (Si), % 0
0 to 0.0050
Sulfur (S), % 0.16 to 0.23
0
Tantalum (Ta), % 0
0 to 0.5
Titanium (Ti), % 0
0 to 0.020
Tungsten (W), % 0
0 to 0.050
Zirconium (Zr), % 0
0.8 to 1.2