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Grade 705C Zirconium vs. S32003 Stainless Steel

Grade 705C zirconium belongs to the otherwise unclassified metals classification, while S32003 stainless steel belongs to the iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is grade 705C zirconium and the bottom bar is S32003 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
250
Elastic (Young's, Tensile) Modulus, GPa 98
200
Elongation at Break, % 13
28
Poisson's Ratio 0.34
0.27
Shear Modulus, GPa 36
79
Tensile Strength: Ultimate (UTS), MPa 540
730
Tensile Strength: Yield (Proof), MPa 390
510

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Specific Heat Capacity, J/kg-K 270
480
Thermal Conductivity, W/m-K 18
15
Thermal Expansion, µm/m-K 5.7
13

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 66
180
Resilience: Unit (Modulus of Resilience), kJ/m3 790
660
Stiffness to Weight: Axial, points 8.1
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 22
26
Strength to Weight: Bending, points 22
23
Thermal Diffusivity, mm2/s 9.9
4.0
Thermal Shock Resistance, points 69
21

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.030
Chromium (Cr), % 0
19.5 to 22.5
Hafnium (Hf), % 0 to 4.5
0
Hydrogen (H), % 0 to 0.0050
0
Iron (Fe), % 0 to 0.3
68.2 to 75.9
Manganese (Mn), % 0
0 to 2.0
Molybdenum (Mo), % 0
1.5 to 2.0
Nickel (Ni), % 0
3.0 to 4.0
Niobium (Nb), % 2.0 to 3.0
0
Nitrogen (N), % 0 to 0.030
0.14 to 0.2
Oxygen (O), % 0 to 0.3
0
Phosphorus (P), % 0 to 0.010
0 to 0.030
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.020
Zirconium (Zr), % 91.9 to 98
0