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Grade 705C Zirconium vs. EN 1.4821 Stainless Steel

Grade 705C zirconium belongs to the otherwise unclassified metals classification, while EN 1.4821 stainless steel belongs to the iron alloys. There are 21 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 705C zirconium and the bottom bar is EN 1.4821 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
200
Elastic (Young's, Tensile) Modulus, GPa 98
200
Elongation at Break, % 13
18
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
450

Thermal Properties

Latent Heat of Fusion, J/g 250
310
Specific Heat Capacity, J/kg-K 270
490
Thermal Conductivity, W/m-K 18
17
Thermal Expansion, µm/m-K 5.7
12

Otherwise Unclassified Properties

Density, g/cm3 6.7
7.6
Embodied Water, L/kg 450
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 66
110
Resilience: Unit (Modulus of Resilience), kJ/m3 790
500
Stiffness to Weight: Axial, points 8.1
15
Stiffness to Weight: Bending, points 23
26
Strength to Weight: Axial, points 22
26
Strength to Weight: Bending, points 22
23
Thermal Diffusivity, mm2/s 9.9
4.6
Thermal Shock Resistance, points 69
21

Alloy Composition

Carbon (C), % 0 to 0.1
0.1 to 0.2
Chromium (Cr), % 0
24.5 to 26.5
Hafnium (Hf), % 0 to 4.5
0
Hydrogen (H), % 0 to 0.0050
0
Iron (Fe), % 0 to 0.3
64.2 to 71.1
Manganese (Mn), % 0
0 to 2.0
Nickel (Ni), % 0
3.5 to 5.5
Niobium (Nb), % 2.0 to 3.0
0
Nitrogen (N), % 0 to 0.030
0 to 0.1
Oxygen (O), % 0 to 0.3
0
Phosphorus (P), % 0 to 0.010
0 to 0.040
Silicon (Si), % 0
0.8 to 1.5
Sulfur (S), % 0
0 to 0.015
Zirconium (Zr), % 91.9 to 98
0