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Grade 704C Zirconium vs. AISI 446 Stainless Steel

Grade 704C zirconium belongs to the otherwise unclassified metals classification, while AISI 446 stainless steel belongs to the iron alloys. There are 22 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is grade 704C zirconium and the bottom bar is AISI 446 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
190
Elastic (Young's, Tensile) Modulus, GPa 97
200
Elongation at Break, % 11
23
Poisson's Ratio 0.34
0.27
Rockwell B Hardness 85
84
Shear Modulus, GPa 36
79
Tensile Strength: Ultimate (UTS), MPa 470
570
Tensile Strength: Yield (Proof), MPa 310
300

Thermal Properties

Latent Heat of Fusion, J/g 240
290
Specific Heat Capacity, J/kg-K 270
490
Thermal Conductivity, W/m-K 21
17
Thermal Expansion, µm/m-K 5.9
11

Otherwise Unclassified Properties

Density, g/cm3 6.7
7.7
Embodied Water, L/kg 460
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 48
110
Resilience: Unit (Modulus of Resilience), kJ/m3 490
230
Stiffness to Weight: Axial, points 8.1
15
Stiffness to Weight: Bending, points 23
26
Strength to Weight: Axial, points 20
21
Strength to Weight: Bending, points 20
20
Thermal Diffusivity, mm2/s 12
4.6
Thermal Shock Resistance, points 58
19

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.2
Chromium (Cr), % 0
23 to 27
Hafnium (Hf), % 0 to 4.5
0
Hydrogen (H), % 0 to 0.0050
0
Iron (Fe), % 0 to 0.3
69.2 to 77
Manganese (Mn), % 0
0 to 1.5
Nickel (Ni), % 0
0 to 0.75
Nitrogen (N), % 0 to 0.030
0 to 0.25
Oxygen (O), % 0 to 0.3
0
Phosphorus (P), % 0 to 0.010
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 1.0 to 2.0
0
Zirconium (Zr), % 92.9 to 99
0