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Grade 704C Zirconium vs. S31254 Stainless Steel

Grade 704C zirconium belongs to the otherwise unclassified metals classification, while S31254 stainless steel belongs to the iron alloys. There are 22 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 grade 704C zirconium and the bottom bar is S31254 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
190
Elastic (Young's, Tensile) Modulus, GPa 97
200
Elongation at Break, % 11
40
Poisson's Ratio 0.34
0.28
Rockwell B Hardness 85
84
Shear Modulus, GPa 36
80
Tensile Strength: Ultimate (UTS), MPa 470
720
Tensile Strength: Yield (Proof), MPa 310
330

Thermal Properties

Latent Heat of Fusion, J/g 240
300
Specific Heat Capacity, J/kg-K 270
460
Thermal Conductivity, W/m-K 21
14
Thermal Expansion, µm/m-K 5.9
17

Otherwise Unclassified Properties

Density, g/cm3 6.7
8.0
Embodied Water, L/kg 460
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 48
240
Resilience: Unit (Modulus of Resilience), kJ/m3 490
270
Stiffness to Weight: Axial, points 8.1
14
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 20
25
Strength to Weight: Bending, points 20
22
Thermal Diffusivity, mm2/s 12
3.8
Thermal Shock Resistance, points 58
15

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.020
Chromium (Cr), % 0
19.5 to 20.5
Copper (Cu), % 0
0.5 to 1.0
Hafnium (Hf), % 0 to 4.5
0
Hydrogen (H), % 0 to 0.0050
0
Iron (Fe), % 0 to 0.3
51.4 to 56.3
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
6.0 to 6.5
Nickel (Ni), % 0
17.5 to 18.5
Nitrogen (N), % 0 to 0.030
0.18 to 0.22
Oxygen (O), % 0 to 0.3
0
Phosphorus (P), % 0 to 0.010
0 to 0.030
Silicon (Si), % 0
0 to 0.8
Sulfur (S), % 0
0 to 0.010
Tin (Sn), % 1.0 to 2.0
0
Zirconium (Zr), % 92.9 to 99
0