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EN 1.3549 Stainless Steel vs. Type 2 Niobium

EN 1.3549 stainless steel belongs to the iron alloys classification, while Type 2 niobium belongs to the otherwise unclassified metals. There are 17 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is EN 1.3549 stainless steel and the bottom bar is Type 2 niobium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
110
Elastic (Young's, Tensile) Modulus, GPa 200
110
Poisson's Ratio 0.28
0.4
Shear Modulus, GPa 77
38
Tensile Strength: Ultimate (UTS), MPa 730
140

Thermal Properties

Latent Heat of Fusion, J/g 280
320
Specific Heat Capacity, J/kg-K 480
270
Thermal Conductivity, W/m-K 21
52
Thermal Expansion, µm/m-K 10
7.3

Otherwise Unclassified Properties

Density, g/cm3 7.7
8.6
Embodied Water, L/kg 130
160

Common Calculations

Stiffness to Weight: Axial, points 14
6.8
Stiffness to Weight: Bending, points 25
18
Strength to Weight: Axial, points 27
4.6
Strength to Weight: Bending, points 24
7.1
Thermal Diffusivity, mm2/s 5.6
23
Thermal Shock Resistance, points 26
13

Alloy Composition

Carbon (C), % 0.85 to 1.0
0 to 0.010
Chromium (Cr), % 17 to 19
0
Hafnium (Hf), % 0
0 to 0.020
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 77.5 to 82
0 to 0.010
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 0.9 to 1.3
0 to 0.020
Nickel (Ni), % 0
0 to 0.0050
Niobium (Nb), % 0
99.5 to 100
Nitrogen (N), % 0
0 to 0.010
Oxygen (O), % 0
0 to 0.025
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0 to 0.0050
Sulfur (S), % 0 to 0.030
0
Tantalum (Ta), % 0
0 to 0.3
Titanium (Ti), % 0
0 to 0.030
Tungsten (W), % 0
0 to 0.050
Vanadium (V), % 0.070 to 0.12
0
Zirconium (Zr), % 0
0 to 0.020