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Grade 702C Zirconium vs. S40975 Stainless Steel

Grade 702C zirconium belongs to the otherwise unclassified metals classification, while S40975 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 702C zirconium and the bottom bar is S40975 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
170
Elastic (Young's, Tensile) Modulus, GPa 97
190
Elongation at Break, % 13
22
Poisson's Ratio 0.34
0.28
Rockwell B Hardness 84
81
Shear Modulus, GPa 36
75
Tensile Strength: Ultimate (UTS), MPa 430
460
Tensile Strength: Yield (Proof), MPa 310
310

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Specific Heat Capacity, J/kg-K 270
480
Thermal Conductivity, W/m-K 22
26
Thermal Expansion, µm/m-K 5.7
10

Otherwise Unclassified Properties

Density, g/cm3 6.7
7.8
Embodied Water, L/kg 450
95

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 52
93
Resilience: Unit (Modulus of Resilience), kJ/m3 510
250
Stiffness to Weight: Axial, points 8.1
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 18
17
Strength to Weight: Bending, points 19
17
Thermal Diffusivity, mm2/s 12
7.0
Thermal Shock Resistance, points 55
17

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.030
Chromium (Cr), % 0
10.5 to 11.7
Hafnium (Hf), % 0 to 4.5
0
Hydrogen (H), % 0 to 0.0050
0
Iron (Fe), % 0 to 0.3
84.4 to 89
Manganese (Mn), % 0
0 to 1.0
Nickel (Ni), % 0
0.5 to 1.0
Nitrogen (N), % 0 to 0.030
0 to 0.030
Oxygen (O), % 0 to 0.25
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
Titanium (Ti), % 0
0 to 0.75
Zirconium (Zr), % 94.8 to 100
0