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Grade 705C Zirconium vs. EN 1.4557 Stainless Steel

Grade 705C zirconium belongs to the otherwise unclassified metals classification, while EN 1.4557 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 1.4557 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
160
Elastic (Young's, Tensile) Modulus, GPa 98
200
Elongation at Break, % 13
40
Poisson's Ratio 0.34
0.28
Shear Modulus, GPa 36
80
Tensile Strength: Ultimate (UTS), MPa 540
560
Tensile Strength: Yield (Proof), MPa 390
300

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Specific Heat Capacity, J/kg-K 270
460
Thermal Conductivity, W/m-K 18
15
Thermal Expansion, µm/m-K 5.7
17

Otherwise Unclassified Properties

Density, g/cm3 6.7
8.0
Embodied Water, L/kg 450
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 66
190
Resilience: Unit (Modulus of Resilience), kJ/m3 790
210
Stiffness to Weight: Axial, points 8.1
14
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 22
19
Strength to Weight: Bending, points 22
19
Thermal Diffusivity, mm2/s 9.9
4.0
Thermal Shock Resistance, points 69
12

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
49.5 to 56.3
Manganese (Mn), % 0
0 to 1.2
Molybdenum (Mo), % 0
6.0 to 7.0
Nickel (Ni), % 0
17.5 to 19.5
Niobium (Nb), % 2.0 to 3.0
0
Nitrogen (N), % 0 to 0.030
0.18 to 0.24
Oxygen (O), % 0 to 0.3
0
Phosphorus (P), % 0 to 0.010
0 to 0.030
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.010
Zirconium (Zr), % 91.9 to 98
0