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Grade 705C Zirconium vs. S15500 Stainless Steel

Grade 705C zirconium belongs to the otherwise unclassified metals classification, while S15500 stainless steel belongs to the iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (16, in this case) are not shown.

For each property being compared, the top bar is grade 705C zirconium and the bottom bar is S15500 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
290 to 430
Elastic (Young's, Tensile) Modulus, GPa 98
190
Elongation at Break, % 13
6.8 to 16
Poisson's Ratio 0.34
0.28
Shear Modulus, GPa 36
75
Tensile Strength: Ultimate (UTS), MPa 540
890 to 1490
Tensile Strength: Yield (Proof), MPa 390
590 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 18
17
Thermal Expansion, µm/m-K 5.7
11

Otherwise Unclassified Properties

Density, g/cm3 6.7
7.8
Embodied Water, L/kg 450
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 66
98 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 790
890 to 4460
Stiffness to Weight: Axial, points 8.1
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 22
32 to 53
Strength to Weight: Bending, points 22
26 to 37
Thermal Diffusivity, mm2/s 9.9
4.6
Thermal Shock Resistance, points 69
30 to 50

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.070
Chromium (Cr), % 0
14 to 15.5
Copper (Cu), % 0
2.5 to 4.5
Hafnium (Hf), % 0 to 4.5
0
Hydrogen (H), % 0 to 0.0050
0
Iron (Fe), % 0 to 0.3
71.9 to 79.9
Manganese (Mn), % 0
0 to 1.0
Nickel (Ni), % 0
3.5 to 5.5
Niobium (Nb), % 2.0 to 3.0
0.15 to 0.45
Nitrogen (N), % 0 to 0.030
0
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