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EN 1.7779 Steel vs. Grade 705C Zirconium

EN 1.7779 steel belongs to the iron alloys classification, while grade 705C zirconium belongs to the otherwise unclassified metals. 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 EN 1.7779 steel and the bottom bar is grade 705C zirconium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240
200
Elastic (Young's, Tensile) Modulus, GPa 190
98
Elongation at Break, % 16
13
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 73
36
Tensile Strength: Ultimate (UTS), MPa 810
540
Tensile Strength: Yield (Proof), MPa 660
390

Thermal Properties

Latent Heat of Fusion, J/g 260
250
Specific Heat Capacity, J/kg-K 470
270
Thermal Conductivity, W/m-K 39
18
Thermal Expansion, µm/m-K 13
5.7

Otherwise Unclassified Properties

Density, g/cm3 7.8
6.7
Embodied Water, L/kg 64
450

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
66
Resilience: Unit (Modulus of Resilience), kJ/m3 1150
790
Stiffness to Weight: Axial, points 13
8.1
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 29
22
Strength to Weight: Bending, points 25
22
Thermal Diffusivity, mm2/s 11
9.9
Thermal Shock Resistance, points 23
69

Alloy Composition

Aluminum (Al), % 0 to 0.040
0
Carbon (C), % 0.17 to 0.23
0 to 0.1
Chromium (Cr), % 3.0 to 3.3
0
Copper (Cu), % 0 to 0.3
0
Hafnium (Hf), % 0
0 to 4.5
Hydrogen (H), % 0
0 to 0.0050
Iron (Fe), % 93.8 to 95.4
0 to 0.3
Manganese (Mn), % 0.3 to 0.5
0
Molybdenum (Mo), % 0.5 to 0.6
0
Nickel (Ni), % 0 to 0.3
0
Niobium (Nb), % 0
2.0 to 3.0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.3
Phosphorus (P), % 0 to 0.025
0 to 0.010
Silicon (Si), % 0.15 to 0.35
0
Sulfur (S), % 0 to 0.010
0
Vanadium (V), % 0.45 to 0.55
0
Zirconium (Zr), % 0
91.9 to 98