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EN 1.4971 Stainless Steel vs. Grade 704C Zirconium

EN 1.4971 stainless steel belongs to the iron alloys classification, while grade 704C 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 704C zirconium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240
210
Elastic (Young's, Tensile) Modulus, GPa 210
97
Elongation at Break, % 34
11
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 81
36
Tensile Strength: Ultimate (UTS), MPa 800
470
Tensile Strength: Yield (Proof), MPa 340
310

Thermal Properties

Latent Heat of Fusion, J/g 300
240
Specific Heat Capacity, J/kg-K 450
270
Thermal Conductivity, W/m-K 13
21
Thermal Expansion, µm/m-K 15
5.9

Otherwise Unclassified Properties

Density, g/cm3 8.4
6.7
Embodied Water, L/kg 300
460

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
48
Resilience: Unit (Modulus of Resilience), kJ/m3 280
490
Stiffness to Weight: Axial, points 14
8.1
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 26
20
Strength to Weight: Bending, points 23
20
Thermal Diffusivity, mm2/s 3.4
12
Thermal Shock Resistance, points 19
58

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 0.3
Phosphorus (P), % 0 to 0.035
0 to 0.010
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.015
0
Tin (Sn), % 0
1.0 to 2.0
Tungsten (W), % 2.0 to 3.0
0
Zirconium (Zr), % 0
92.9 to 99