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EN 1.4640 Stainless Steel vs. Grade 704C Zirconium

EN 1.4640 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 (13, in this case) are not shown.

For each property being compared, the top bar is EN 1.4640 stainless steel and the bottom bar is grade 704C zirconium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 200
210
Elastic (Young's, Tensile) Modulus, GPa 200
97
Elongation at Break, % 51
11
Poisson's Ratio 0.28
0.34
Shear Modulus, GPa 77
36
Tensile Strength: Ultimate (UTS), MPa 620 to 650
470
Tensile Strength: Yield (Proof), MPa 240 to 260
310

Thermal Properties

Latent Heat of Fusion, J/g 280
240
Specific Heat Capacity, J/kg-K 480
270
Thermal Conductivity, W/m-K 15
21
Thermal Expansion, µm/m-K 16
5.9

Otherwise Unclassified Properties

Density, g/cm3 7.8
6.7
Embodied Water, L/kg 150
460

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 250 to 260
48
Resilience: Unit (Modulus of Resilience), kJ/m3 150 to 170
490
Stiffness to Weight: Axial, points 14
8.1
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 22 to 23
20
Strength to Weight: Bending, points 21
20
Thermal Diffusivity, mm2/s 4.0
12
Thermal Shock Resistance, points 14 to 15
58

Alloy Composition

Carbon (C), % 0.030 to 0.080
0 to 0.1
Chromium (Cr), % 18 to 19
0
Copper (Cu), % 1.3 to 2.0
0
Hafnium (Hf), % 0
0 to 4.5
Hydrogen (H), % 0
0 to 0.0050
Iron (Fe), % 67.4 to 73.6
0 to 0.3
Manganese (Mn), % 1.5 to 4.0
0
Nickel (Ni), % 5.5 to 6.9
0
Nitrogen (N), % 0.030 to 0.11
0 to 0.030
Oxygen (O), % 0
0 to 0.3
Phosphorus (P), % 0 to 0.045
0 to 0.010
Silicon (Si), % 0 to 0.5
0
Sulfur (S), % 0 to 0.015
0
Tin (Sn), % 0
1.0 to 2.0
Zirconium (Zr), % 0
92.9 to 99