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AISI 304 Stainless Steel vs. Type 1 Niobium

AISI 304 stainless steel belongs to the iron alloys classification, while Type 1 niobium belongs to the otherwise unclassified metals. There are 21 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 304 stainless steel and the bottom bar is Type 1 niobium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170 to 360
79
Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 8.0 to 43
29
Poisson's Ratio 0.28
0.4
Shear Modulus, GPa 77
38
Tensile Strength: Ultimate (UTS), MPa 580 to 1180
140
Tensile Strength: Yield (Proof), MPa 230 to 860
82

Thermal Properties

Latent Heat of Fusion, J/g 290
320
Specific Heat Capacity, J/kg-K 480
270
Thermal Conductivity, W/m-K 16
52
Thermal Expansion, µm/m-K 17
7.3

Otherwise Unclassified Properties

Density, g/cm3 7.8
8.6
Embodied Water, L/kg 150
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 86 to 250
35
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 1870
32
Stiffness to Weight: Axial, points 14
6.8
Stiffness to Weight: Bending, points 25
18
Strength to Weight: Axial, points 21 to 42
4.6
Strength to Weight: Bending, points 20 to 32
7.1
Thermal Diffusivity, mm2/s 4.2
23
Thermal Shock Resistance, points 12 to 25
13

Alloy Composition

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), % 66.5 to 74
0 to 0.0050
Manganese (Mn), % 0 to 2.0
0
Molybdenum (Mo), % 0
0 to 0.010
Nickel (Ni), % 8.0 to 10.5
0 to 0.0050
Niobium (Nb), % 0
99.7 to 100
Nitrogen (N), % 0 to 0.1
0 to 0.010
Oxygen (O), % 0
0 to 0.015
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 0.75
0 to 0.0050
Sulfur (S), % 0 to 0.030
0
Tantalum (Ta), % 0
0 to 0.1
Titanium (Ti), % 0
0 to 0.020
Tungsten (W), % 0
0 to 0.030
Zirconium (Zr), % 0
0 to 0.020