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EN 1.4740 Stainless Steel vs. Grade 704C Zirconium

EN 1.4740 stainless steel belongs to the iron alloys classification, while grade 704C zirconium belongs to the otherwise unclassified metals. There are 14 material properties with values for both materials. Properties with values for just one material (18, in this case) are not shown.

For each property being compared, the top bar is EN 1.4740 stainless steel and the bottom bar is grade 704C zirconium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260
210
Elastic (Young's, Tensile) Modulus, GPa 200
97
Elongation at Break, % 22
11
Poisson's Ratio 0.28
0.34
Shear Modulus, GPa 77
36

Thermal Properties

Latent Heat of Fusion, J/g 300
240
Specific Heat Capacity, J/kg-K 490
270
Thermal Conductivity, W/m-K 18
21
Thermal Expansion, µm/m-K 10
5.9

Otherwise Unclassified Properties

Density, g/cm3 7.6
6.7
Embodied Water, L/kg 120
460

Common Calculations

Stiffness to Weight: Axial, points 14
8.1
Stiffness to Weight: Bending, points 25
23
Thermal Diffusivity, mm2/s 4.8
12

Alloy Composition

Carbon (C), % 0.3 to 0.5
0 to 0.1
Chromium (Cr), % 16 to 19
0
Hafnium (Hf), % 0
0 to 4.5
Hydrogen (H), % 0
0 to 0.0050
Iron (Fe), % 75.4 to 82.7
0 to 0.3
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 0 to 1.0
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.010
Silicon (Si), % 1.0 to 2.5
0
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
1.0 to 2.0
Zirconium (Zr), % 0
92.9 to 99