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Grade 705C Zirconium vs. AISI 329 Stainless Steel

Grade 705C zirconium belongs to the otherwise unclassified metals classification, while AISI 329 stainless steel belongs to the iron alloys. There are 21 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 705C zirconium and the bottom bar is AISI 329 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
240
Elastic (Young's, Tensile) Modulus, GPa 98
200
Elongation at Break, % 13
17
Poisson's Ratio 0.34
0.27
Shear Modulus, GPa 36
80
Tensile Strength: Ultimate (UTS), MPa 540
710
Tensile Strength: Yield (Proof), MPa 390
540

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Specific Heat Capacity, J/kg-K 270
480
Thermal Conductivity, W/m-K 18
16
Thermal Expansion, µm/m-K 5.7
13

Otherwise Unclassified Properties

Density, g/cm3 6.7
7.7
Embodied Water, L/kg 450
170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 66
110
Resilience: Unit (Modulus of Resilience), kJ/m3 790
730
Stiffness to Weight: Axial, points 8.1
15
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 22
25
Strength to Weight: Bending, points 22
23
Thermal Diffusivity, mm2/s 9.9
4.3
Thermal Shock Resistance, points 69
19

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.080
Chromium (Cr), % 0
23 to 28
Hafnium (Hf), % 0 to 4.5
0
Hydrogen (H), % 0 to 0.0050
0
Iron (Fe), % 0 to 0.3
63.1 to 74
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
1.0 to 2.0
Nickel (Ni), % 0
2.0 to 5.0
Niobium (Nb), % 2.0 to 3.0
0
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.3
0
Phosphorus (P), % 0 to 0.010
0 to 0.040
Silicon (Si), % 0
0 to 0.75
Sulfur (S), % 0
0 to 0.030
Zirconium (Zr), % 91.9 to 98
0