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Commercially Pure Zirconium vs. EN 1.4490 Stainless Steel

Commercially pure zirconium belongs to the otherwise unclassified metals classification, while EN 1.4490 stainless steel belongs to the iron alloys. 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 commercially pure zirconium and the bottom bar is EN 1.4490 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 98
200
Elongation at Break, % 18
34
Fatigue Strength, MPa 60
210
Poisson's Ratio 0.34
0.28
Shear Modulus, GPa 36
78
Tensile Strength: Ultimate (UTS), MPa 430
560
Tensile Strength: Yield (Proof), MPa 240
260

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Specific Heat Capacity, J/kg-K 270
480
Thermal Conductivity, W/m-K 22
15
Thermal Expansion, µm/m-K 5.5
12

Otherwise Unclassified Properties

Density, g/cm3 6.7
7.8
Embodied Water, L/kg 450
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 65
160
Resilience: Unit (Modulus of Resilience), kJ/m3 290
170
Stiffness to Weight: Axial, points 8.1
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 18
20
Strength to Weight: Bending, points 19
19
Thermal Diffusivity, mm2/s 12
4.1
Thermal Shock Resistance, points 56
16

Alloy Composition

Carbon (C), % 0 to 0.050
0 to 0.030
Chromium (Cr), % 0 to 0.2
18 to 20
Hafnium (Hf), % 0 to 4.5
0
Hydrogen (H), % 0 to 0.0050
0
Iron (Fe), % 0 to 0.2
61.7 to 70.9
Manganese (Mn), % 0
0 to 2.0
Molybdenum (Mo), % 0
2.0 to 2.5
Nickel (Ni), % 0
9.0 to 12
Nitrogen (N), % 0 to 0.025
0.12 to 0.2
Oxygen (O), % 0 to 0.16
0
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0
0 to 1.5
Sulfur (S), % 0
0 to 0.030
Zirconium (Zr), % 94.7 to 100
0