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Low-oxygen Zirconium vs. S21904 Stainless Steel

Low-oxygen zirconium belongs to the otherwise unclassified metals classification, while S21904 stainless steel belongs to the iron alloys. There are 20 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 low-oxygen zirconium and the bottom bar is S21904 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 98
200
Elongation at Break, % 23
17 to 51
Poisson's Ratio 0.34
0.28
Shear Modulus, GPa 37
78
Tensile Strength: Ultimate (UTS), MPa 330
700 to 1000
Tensile Strength: Yield (Proof), MPa 270
390 to 910

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Specific Heat Capacity, J/kg-K 270
480
Thermal Conductivity, W/m-K 22
14
Thermal Expansion, µm/m-K 5.7
17

Otherwise Unclassified Properties

Density, g/cm3 6.7
7.7
Embodied Water, L/kg 450
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 70
160 to 310
Resilience: Unit (Modulus of Resilience), kJ/m3 370
380 to 2070
Stiffness to Weight: Axial, points 8.1
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 14
25 to 36
Strength to Weight: Bending, points 16
23 to 29
Thermal Diffusivity, mm2/s 12
3.8
Thermal Shock Resistance, points 42
15 to 21

Alloy Composition

Carbon (C), % 0 to 0.050
0 to 0.040
Chromium (Cr), % 0 to 0.2
19 to 21.5
Hafnium (Hf), % 0 to 4.5
0
Hydrogen (H), % 0 to 0.0050
0
Iron (Fe), % 0 to 0.2
59.5 to 67.4
Manganese (Mn), % 0
8.0 to 10
Nickel (Ni), % 0
5.5 to 7.5
Nitrogen (N), % 0 to 0.025
0.15 to 0.4
Oxygen (O), % 0 to 0.1
0
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Zirconium (Zr), % 94.7 to 100
0