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Grade 705C Zirconium vs. ASTM A387 Grade 22 Steel

Grade 705C zirconium belongs to the otherwise unclassified metals classification, while ASTM A387 grade 22 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 ASTM A387 grade 22 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
150 to 180
Elastic (Young's, Tensile) Modulus, GPa 98
190
Elongation at Break, % 13
21
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 36
74
Tensile Strength: Ultimate (UTS), MPa 540
480 to 600
Tensile Strength: Yield (Proof), MPa 390
230 to 350

Thermal Properties

Latent Heat of Fusion, J/g 250
260
Specific Heat Capacity, J/kg-K 270
470
Thermal Conductivity, W/m-K 18
40
Thermal Expansion, µm/m-K 5.7
13

Otherwise Unclassified Properties

Density, g/cm3 6.7
7.9
Embodied Water, L/kg 450
58

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 66
85 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 790
140 to 320
Stiffness to Weight: Axial, points 8.1
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 22
17 to 21
Strength to Weight: Bending, points 22
17 to 20
Thermal Diffusivity, mm2/s 9.9
11
Thermal Shock Resistance, points 69
14 to 17

Alloy Composition

Carbon (C), % 0 to 0.1
0.050 to 0.15
Chromium (Cr), % 0
2.0 to 2.5
Hafnium (Hf), % 0 to 4.5
0
Hydrogen (H), % 0 to 0.0050
0
Iron (Fe), % 0 to 0.3
95.1 to 96.8
Manganese (Mn), % 0
0.3 to 0.6
Molybdenum (Mo), % 0
0.9 to 1.1
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 0.025
Silicon (Si), % 0
0 to 0.5
Sulfur (S), % 0
0 to 0.025
Zirconium (Zr), % 91.9 to 98
0