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EN 1.4029 Stainless Steel vs. Grade 702C Zirconium

EN 1.4029 stainless steel belongs to the iron alloys classification, while grade 702C 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 1.4029 stainless steel and the bottom bar is grade 702C zirconium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
97
Elongation at Break, % 10 to 20
13
Poisson's Ratio 0.28
0.34
Shear Modulus, GPa 76
36
Tensile Strength: Ultimate (UTS), MPa 700 to 930
430
Tensile Strength: Yield (Proof), MPa 410 to 740
310

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Specific Heat Capacity, J/kg-K 480
270
Thermal Conductivity, W/m-K 30
22
Thermal Expansion, µm/m-K 10
5.7

Otherwise Unclassified Properties

Density, g/cm3 7.7
6.7
Embodied Water, L/kg 100
450

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 89 to 120
52
Resilience: Unit (Modulus of Resilience), kJ/m3 440 to 1410
510
Stiffness to Weight: Axial, points 14
8.1
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 25 to 33
18
Strength to Weight: Bending, points 23 to 27
19
Thermal Diffusivity, mm2/s 8.1
12
Thermal Shock Resistance, points 26 to 34
55

Alloy Composition

Carbon (C), % 0.25 to 0.32
0 to 0.1
Chromium (Cr), % 12 to 13.5
0
Hafnium (Hf), % 0
0 to 4.5
Hydrogen (H), % 0
0 to 0.0050
Iron (Fe), % 82.8 to 87.6
0 to 0.3
Manganese (Mn), % 0 to 1.5
0
Molybdenum (Mo), % 0 to 0.6
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.25
Phosphorus (P), % 0 to 0.040
0 to 0.010
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0.15 to 0.25
0
Zirconium (Zr), % 0
94.8 to 100