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EN 1.4749 Stainless Steel vs. Grade 704C Zirconium

EN 1.4749 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 1.4749 stainless steel and the bottom bar is grade 704C zirconium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
210
Elastic (Young's, Tensile) Modulus, GPa 200
97
Elongation at Break, % 16
11
Poisson's Ratio 0.27
0.34
Shear Modulus, GPa 80
36
Tensile Strength: Ultimate (UTS), MPa 600
470
Tensile Strength: Yield (Proof), MPa 320
310

Thermal Properties

Latent Heat of Fusion, J/g 300
240
Specific Heat Capacity, J/kg-K 490
270
Thermal Conductivity, W/m-K 17
21
Thermal Expansion, µm/m-K 9.6
5.9

Otherwise Unclassified Properties

Density, g/cm3 7.6
6.7
Embodied Water, L/kg 160
460

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 80
48
Resilience: Unit (Modulus of Resilience), kJ/m3 250
490
Stiffness to Weight: Axial, points 15
8.1
Stiffness to Weight: Bending, points 26
23
Strength to Weight: Axial, points 22
20
Strength to Weight: Bending, points 21
20
Thermal Diffusivity, mm2/s 4.6
12
Thermal Shock Resistance, points 22
58

Alloy Composition

Carbon (C), % 0.15 to 0.2
0 to 0.1
Chromium (Cr), % 26 to 29
0
Hafnium (Hf), % 0
0 to 4.5
Hydrogen (H), % 0
0 to 0.0050
Iron (Fe), % 68.5 to 73.7
0 to 0.3
Manganese (Mn), % 0 to 1.0
0
Nitrogen (N), % 0.15 to 0.25
0 to 0.030
Oxygen (O), % 0
0 to 0.3
Phosphorus (P), % 0 to 0.040
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
Zirconium (Zr), % 0
92.9 to 99