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Grade 705C Zirconium vs. EN 1.4301 Stainless Steel

Grade 705C zirconium belongs to the otherwise unclassified metals classification, while EN 1.4301 stainless steel belongs to the iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is grade 705C zirconium and the bottom bar is EN 1.4301 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
190 to 270
Elastic (Young's, Tensile) Modulus, GPa 98
200
Elongation at Break, % 13
14 to 46
Poisson's Ratio 0.34
0.28
Shear Modulus, GPa 36
77
Tensile Strength: Ultimate (UTS), MPa 540
610 to 900
Tensile Strength: Yield (Proof), MPa 390
220 to 570

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Specific Heat Capacity, J/kg-K 270
480
Thermal Conductivity, W/m-K 18
15
Thermal Expansion, µm/m-K 5.7
16

Otherwise Unclassified Properties

Density, g/cm3 6.7
7.8
Embodied Water, L/kg 450
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 66
110 to 220
Resilience: Unit (Modulus of Resilience), kJ/m3 790
120 to 820
Stiffness to Weight: Axial, points 8.1
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 22
22 to 32
Strength to Weight: Bending, points 22
20 to 27
Thermal Diffusivity, mm2/s 9.9
4.0
Thermal Shock Resistance, points 69
14 to 20

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.070
Chromium (Cr), % 0
17.5 to 19.5
Hafnium (Hf), % 0 to 4.5
0
Hydrogen (H), % 0 to 0.0050
0
Iron (Fe), % 0 to 0.3
66.8 to 74.5
Manganese (Mn), % 0
0 to 2.0
Nickel (Ni), % 0
8.0 to 10.5
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 0.045
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.015
Zirconium (Zr), % 91.9 to 98
0