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AISI 334 Stainless Steel vs. Type 4 Niobium

AISI 334 stainless steel belongs to the iron alloys classification, while Type 4 niobium belongs to the otherwise unclassified metals. There are 19 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is AISI 334 stainless steel and the bottom bar is Type 4 niobium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
120
Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 34
23
Poisson's Ratio 0.28
0.4
Shear Modulus, GPa 77
38
Tensile Strength: Ultimate (UTS), MPa 540
220
Tensile Strength: Yield (Proof), MPa 190
140

Thermal Properties

Latent Heat of Fusion, J/g 290
310
Specific Heat Capacity, J/kg-K 480
270
Thermal Expansion, µm/m-K 16
7.3

Otherwise Unclassified Properties

Density, g/cm3 7.9
8.6
Embodied Water, L/kg 170
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
44
Resilience: Unit (Modulus of Resilience), kJ/m3 96
93
Stiffness to Weight: Axial, points 14
6.8
Stiffness to Weight: Bending, points 25
18
Strength to Weight: Axial, points 19
7.2
Strength to Weight: Bending, points 19
9.5
Thermal Shock Resistance, points 12
21

Alloy Composition

Aluminum (Al), % 0.15 to 0.6
0
Carbon (C), % 0 to 0.080
0 to 0.010
Chromium (Cr), % 18 to 20
0
Hafnium (Hf), % 0
0 to 0.020
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 55.7 to 62.7
0 to 0.010
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 0
0 to 0.050
Nickel (Ni), % 19 to 21
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 to 1.0
0 to 0.0050
Sulfur (S), % 0 to 0.015
0
Tantalum (Ta), % 0
0 to 0.5
Titanium (Ti), % 0.15 to 0.6
0 to 0.020
Tungsten (W), % 0
0 to 0.050
Zirconium (Zr), % 0
0.8 to 1.2