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Grade 705C Zirconium vs. EN 1.4931 Steel

Grade 705C zirconium belongs to the otherwise unclassified metals classification, while EN 1.4931 steel belongs to the iron alloys. There are 21 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 705C zirconium and the bottom bar is EN 1.4931 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
240
Elastic (Young's, Tensile) Modulus, GPa 98
200
Elongation at Break, % 13
17
Poisson's Ratio 0.34
0.28
Shear Modulus, GPa 36
76
Tensile Strength: Ultimate (UTS), MPa 540
810
Tensile Strength: Yield (Proof), MPa 390
620

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Specific Heat Capacity, J/kg-K 270
470
Thermal Conductivity, W/m-K 18
24
Thermal Expansion, µm/m-K 5.7
14

Otherwise Unclassified Properties

Density, g/cm3 6.7
7.8
Embodied Water, L/kg 450
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 66
130
Resilience: Unit (Modulus of Resilience), kJ/m3 790
970
Stiffness to Weight: Axial, points 8.1
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 22
29
Strength to Weight: Bending, points 22
25
Thermal Diffusivity, mm2/s 9.9
6.5
Thermal Shock Resistance, points 69
22

Alloy Composition

Carbon (C), % 0 to 0.1
0.2 to 0.26
Chromium (Cr), % 0
11.3 to 12.2
Hafnium (Hf), % 0 to 4.5
0
Hydrogen (H), % 0 to 0.0050
0
Iron (Fe), % 0 to 0.3
83.2 to 86.8
Manganese (Mn), % 0
0.5 to 0.8
Molybdenum (Mo), % 0
1.0 to 1.2
Nickel (Ni), % 0
0 to 1.0
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 0.030
Silicon (Si), % 0
0 to 0.4
Sulfur (S), % 0
0 to 0.020
Tungsten (W), % 0
0 to 0.5
Vanadium (V), % 0
0.25 to 0.35
Zirconium (Zr), % 91.9 to 98
0