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EN 1.4971 Stainless Steel vs. Grade 702C Zirconium

EN 1.4971 stainless steel belongs to the iron alloys classification, while grade 702C zirconium belongs to the otherwise unclassified metals. There are 21 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is EN 1.4971 stainless steel and the bottom bar is grade 702C zirconium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240
180
Elastic (Young's, Tensile) Modulus, GPa 210
97
Elongation at Break, % 34
13
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 81
36
Tensile Strength: Ultimate (UTS), MPa 800
430
Tensile Strength: Yield (Proof), MPa 340
310

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Specific Heat Capacity, J/kg-K 450
270
Thermal Conductivity, W/m-K 13
22
Thermal Expansion, µm/m-K 15
5.7

Otherwise Unclassified Properties

Density, g/cm3 8.4
6.7
Embodied Water, L/kg 300
450

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
52
Resilience: Unit (Modulus of Resilience), kJ/m3 280
510
Stiffness to Weight: Axial, points 14
8.1
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 26
18
Strength to Weight: Bending, points 23
19
Thermal Diffusivity, mm2/s 3.4
12
Thermal Shock Resistance, points 19
55

Alloy Composition

Carbon (C), % 0.080 to 0.16
0 to 0.1
Chromium (Cr), % 20 to 22.5
0
Cobalt (Co), % 18.5 to 21
0
Hafnium (Hf), % 0
0 to 4.5
Hydrogen (H), % 0
0 to 0.0050
Iron (Fe), % 24.3 to 37.1
0 to 0.3
Manganese (Mn), % 0 to 2.0
0
Molybdenum (Mo), % 2.5 to 3.5
0
Nickel (Ni), % 19 to 21
0
Niobium (Nb), % 0.75 to 1.3
0
Nitrogen (N), % 0.1 to 0.2
0 to 0.030
Oxygen (O), % 0
0 to 0.25
Phosphorus (P), % 0 to 0.035
0 to 0.010
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.015
0
Tungsten (W), % 2.0 to 3.0
0
Zirconium (Zr), % 0
94.8 to 100