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EN 1.4945 Stainless Steel vs. Grade 704C Zirconium

EN 1.4945 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 1.4945 stainless steel and the bottom bar is grade 704C zirconium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 220
210
Elastic (Young's, Tensile) Modulus, GPa 200
97
Elongation at Break, % 19 to 34
11
Poisson's Ratio 0.28
0.34
Shear Modulus, GPa 77
36
Tensile Strength: Ultimate (UTS), MPa 640 to 740
470
Tensile Strength: Yield (Proof), MPa 290 to 550
310

Thermal Properties

Latent Heat of Fusion, J/g 290
240
Specific Heat Capacity, J/kg-K 470
270
Thermal Conductivity, W/m-K 14
21
Thermal Expansion, µm/m-K 17
5.9

Otherwise Unclassified Properties

Density, g/cm3 8.1
6.7
Embodied Water, L/kg 150
460

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 180
48
Resilience: Unit (Modulus of Resilience), kJ/m3 210 to 760
490
Stiffness to Weight: Axial, points 14
8.1
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 22 to 25
20
Strength to Weight: Bending, points 20 to 22
20
Thermal Diffusivity, mm2/s 3.7
12
Thermal Shock Resistance, points 14 to 16
58

Alloy Composition

Carbon (C), % 0.040 to 0.1
0 to 0.1
Chromium (Cr), % 15.5 to 17.5
0
Hafnium (Hf), % 0
0 to 4.5
Hydrogen (H), % 0
0 to 0.0050
Iron (Fe), % 57.9 to 65.7
0 to 0.3
Manganese (Mn), % 0 to 1.5
0
Nickel (Ni), % 15.5 to 17.5
0
Niobium (Nb), % 0.4 to 1.2
0
Nitrogen (N), % 0.060 to 0.14
0 to 0.030
Oxygen (O), % 0
0 to 0.3
Phosphorus (P), % 0 to 0.035
0 to 0.010
Silicon (Si), % 0.3 to 0.6
0
Sulfur (S), % 0 to 0.015
0
Tin (Sn), % 0
1.0 to 2.0
Tungsten (W), % 2.5 to 3.5
0
Zirconium (Zr), % 0
92.9 to 99