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Grade 705C Zirconium vs. S33550 Stainless Steel

Grade 705C zirconium belongs to the otherwise unclassified metals classification, while S33550 stainless steel belongs to the iron alloys. There are 22 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 grade 705C zirconium and the bottom bar is S33550 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
190
Elastic (Young's, Tensile) Modulus, GPa 98
200
Elongation at Break, % 13
40
Poisson's Ratio 0.34
0.27
Rockwell B Hardness 87
82
Shear Modulus, GPa 36
79
Tensile Strength: Ultimate (UTS), MPa 540
680
Tensile Strength: Yield (Proof), MPa 390
310

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Specific Heat Capacity, J/kg-K 270
480
Thermal Conductivity, W/m-K 18
15
Thermal Expansion, µm/m-K 5.7
16

Otherwise Unclassified Properties

Density, g/cm3 6.7
7.8
Embodied Water, L/kg 450
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 66
220
Resilience: Unit (Modulus of Resilience), kJ/m3 790
250
Stiffness to Weight: Axial, points 8.1
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 22
24
Strength to Weight: Bending, points 22
22
Thermal Diffusivity, mm2/s 9.9
3.9
Thermal Shock Resistance, points 69
15

Alloy Composition

Carbon (C), % 0 to 0.1
0.040 to 0.1
Cerium (Ce), % 0
0.025 to 0.070
Chromium (Cr), % 0
25 to 28
Hafnium (Hf), % 0 to 4.5
0
Hydrogen (H), % 0 to 0.0050
0
Iron (Fe), % 0 to 0.3
48.8 to 58.2
Lanthanum (La), % 0
0.025 to 0.070
Manganese (Mn), % 0
0 to 1.5
Nickel (Ni), % 0
16.5 to 20
Niobium (Nb), % 2.0 to 3.0
0.050 to 0.15
Nitrogen (N), % 0 to 0.030
0.18 to 0.25
Oxygen (O), % 0 to 0.3
0
Phosphorus (P), % 0 to 0.010
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Zirconium (Zr), % 91.9 to 98
0