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EN 1.4945 Stainless Steel vs. Type 3 Niobium

EN 1.4945 stainless steel belongs to the iron alloys classification, while Type 3 niobium belongs to the otherwise unclassified metals. There are 21 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is EN 1.4945 stainless steel and the bottom bar is Type 3 niobium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 220
110
Elastic (Young's, Tensile) Modulus, GPa 200
100
Elongation at Break, % 19 to 34
23
Poisson's Ratio 0.28
0.4
Shear Modulus, GPa 77
38
Tensile Strength: Ultimate (UTS), MPa 640 to 740
220
Tensile Strength: Yield (Proof), MPa 290 to 550
140

Thermal Properties

Latent Heat of Fusion, J/g 290
310
Specific Heat Capacity, J/kg-K 470
270
Thermal Conductivity, W/m-K 14
42
Thermal Expansion, µm/m-K 17
7.3

Otherwise Unclassified Properties

Density, g/cm3 8.1
8.6
Embodied Water, L/kg 150
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 180
44
Resilience: Unit (Modulus of Resilience), kJ/m3 210 to 760
93
Stiffness to Weight: Axial, points 14
6.8
Stiffness to Weight: Bending, points 24
18
Strength to Weight: Axial, points 22 to 25
7.2
Strength to Weight: Bending, points 20 to 22
9.5
Thermal Diffusivity, mm2/s 3.7
18
Thermal Shock Resistance, points 14 to 16
21

Alloy Composition

Carbon (C), % 0.040 to 0.1
0 to 0.010
Chromium (Cr), % 15.5 to 17.5
0
Hafnium (Hf), % 0
0 to 0.020
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 57.9 to 65.7
0 to 0.0050
Manganese (Mn), % 0 to 1.5
0
Molybdenum (Mo), % 0
0 to 0.010
Nickel (Ni), % 15.5 to 17.5
0 to 0.0050
Niobium (Nb), % 0.4 to 1.2
98.6 to 99.2
Nitrogen (N), % 0.060 to 0.14
0 to 0.010
Oxygen (O), % 0
0 to 0.015
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0.3 to 0.6
0 to 0.0050
Sulfur (S), % 0 to 0.015
0
Tantalum (Ta), % 0
0 to 0.1
Titanium (Ti), % 0
0 to 0.020
Tungsten (W), % 2.5 to 3.5
0 to 0.030
Zirconium (Zr), % 0
0.8 to 1.2