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Grade 705C Zirconium vs. SAE-AISI 1021 Steel

Grade 705C zirconium belongs to the otherwise unclassified metals classification, while SAE-AISI 1021 steel belongs to the iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is grade 705C zirconium and the bottom bar is SAE-AISI 1021 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
130 to 150
Elastic (Young's, Tensile) Modulus, GPa 98
190
Elongation at Break, % 13
17 to 27
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 36
73
Tensile Strength: Ultimate (UTS), MPa 540
480 to 530
Tensile Strength: Yield (Proof), MPa 390
260 to 450

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Specific Heat Capacity, J/kg-K 270
470
Thermal Conductivity, W/m-K 18
52
Thermal Expansion, µm/m-K 5.7
12

Otherwise Unclassified Properties

Density, g/cm3 6.7
7.9
Embodied Water, L/kg 450
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 66
84 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 790
180 to 530
Stiffness to Weight: Axial, points 8.1
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 22
17 to 19
Strength to Weight: Bending, points 22
17 to 18
Thermal Diffusivity, mm2/s 9.9
14
Thermal Shock Resistance, points 69
15 to 17

Alloy Composition

Carbon (C), % 0 to 0.1
0.18 to 0.23
Hafnium (Hf), % 0 to 4.5
0
Hydrogen (H), % 0 to 0.0050
0
Iron (Fe), % 0 to 0.3
98.8 to 99.22
Manganese (Mn), % 0
0.6 to 0.9
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
Sulfur (S), % 0
0 to 0.050
Zirconium (Zr), % 91.9 to 98
0