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Commercially Pure Zirconium vs. AISI 420 Stainless Steel

Commercially pure zirconium belongs to the otherwise unclassified metals classification, while AISI 420 stainless steel belongs to the iron alloys. 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 commercially pure zirconium and the bottom bar is AISI 420 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 98
190
Elongation at Break, % 18
8.0 to 15
Fatigue Strength, MPa 60
220 to 670
Poisson's Ratio 0.34
0.28
Shear Modulus, GPa 36
76
Tensile Strength: Ultimate (UTS), MPa 430
690 to 1720
Tensile Strength: Yield (Proof), MPa 240
380 to 1310

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Specific Heat Capacity, J/kg-K 270
480
Thermal Conductivity, W/m-K 22
27
Thermal Expansion, µm/m-K 5.5
10

Otherwise Unclassified Properties

Density, g/cm3 6.7
7.7
Embodied Water, L/kg 450
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 65
88 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 290
380 to 4410
Stiffness to Weight: Axial, points 8.1
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 18
25 to 62
Strength to Weight: Bending, points 19
22 to 41
Thermal Diffusivity, mm2/s 12
7.3
Thermal Shock Resistance, points 56
25 to 62

Alloy Composition

Carbon (C), % 0 to 0.050
0.15 to 0.4
Chromium (Cr), % 0 to 0.2
12 to 14
Hafnium (Hf), % 0 to 4.5
0
Hydrogen (H), % 0 to 0.0050
0
Iron (Fe), % 0 to 0.2
82.3 to 87.9
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
0 to 0.75
Nitrogen (N), % 0 to 0.025
0
Oxygen (O), % 0 to 0.16
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Zirconium (Zr), % 94.7 to 100
0