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Grade 705C Zirconium vs. EN 1.8550 Steel

Grade 705C zirconium belongs to the otherwise unclassified metals classification, while EN 1.8550 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 1.8550 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
300
Elastic (Young's, Tensile) Modulus, GPa 98
190
Elongation at Break, % 13
11
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 36
73
Tensile Strength: Ultimate (UTS), MPa 540
1000
Tensile Strength: Yield (Proof), MPa 390
760

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Specific Heat Capacity, J/kg-K 270
480
Thermal Conductivity, W/m-K 18
40
Thermal Expansion, µm/m-K 5.7
13

Otherwise Unclassified Properties

Density, g/cm3 6.7
7.8
Embodied Water, L/kg 450
67

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 66
100
Resilience: Unit (Modulus of Resilience), kJ/m3 790
1550
Stiffness to Weight: Axial, points 8.1
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 22
36
Strength to Weight: Bending, points 22
29
Thermal Diffusivity, mm2/s 9.9
11
Thermal Shock Resistance, points 69
29

Alloy Composition

Aluminum (Al), % 0
0.8 to 1.2
Carbon (C), % 0 to 0.1
0.3 to 0.37
Chromium (Cr), % 0
1.5 to 1.8
Hafnium (Hf), % 0 to 4.5
0
Hydrogen (H), % 0 to 0.0050
0
Iron (Fe), % 0 to 0.3
94.4 to 96.3
Manganese (Mn), % 0
0.4 to 0.7
Molybdenum (Mo), % 0
0.15 to 0.25
Nickel (Ni), % 0
0.85 to 1.2
Niobium (Nb), % 2.0 to 3.0
0
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.3
0
Phosphorus (P), % 0 to 0.010
0 to 0.025
Silicon (Si), % 0
0 to 0.4
Sulfur (S), % 0
0 to 0.035
Zirconium (Zr), % 91.9 to 98
0