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EN 1.4470 Stainless Steel vs. Grade 705C Zirconium

EN 1.4470 stainless steel belongs to the iron alloys classification, while grade 705C zirconium belongs to the otherwise unclassified metals. There are 20 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 EN 1.4470 stainless steel and the bottom bar is grade 705C zirconium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
98
Elongation at Break, % 23
13
Poisson's Ratio 0.27
0.34
Shear Modulus, GPa 80
36
Tensile Strength: Ultimate (UTS), MPa 680
540
Tensile Strength: Yield (Proof), MPa 480
390

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Specific Heat Capacity, J/kg-K 480
270
Thermal Conductivity, W/m-K 18
18
Thermal Expansion, µm/m-K 13
5.7

Otherwise Unclassified Properties

Density, g/cm3 7.8
6.7
Embodied Water, L/kg 160
450

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
66
Resilience: Unit (Modulus of Resilience), kJ/m3 570
790
Stiffness to Weight: Axial, points 14
8.1
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 24
22
Strength to Weight: Bending, points 22
22
Thermal Diffusivity, mm2/s 4.8
9.9
Thermal Shock Resistance, points 18
69

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.1
Chromium (Cr), % 21 to 23
0
Hafnium (Hf), % 0
0 to 4.5
Hydrogen (H), % 0
0 to 0.0050
Iron (Fe), % 63.7 to 71.9
0 to 0.3
Manganese (Mn), % 0 to 2.0
0
Molybdenum (Mo), % 2.5 to 3.5
0
Nickel (Ni), % 4.5 to 6.5
0
Niobium (Nb), % 0
2.0 to 3.0
Nitrogen (N), % 0.12 to 0.2
0 to 0.030
Oxygen (O), % 0
0 to 0.3
Phosphorus (P), % 0 to 0.035
0 to 0.010
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.025
0
Zirconium (Zr), % 0
91.9 to 98