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Grade 705C Zirconium vs. SAE-AISI 5140 Steel

Grade 705C zirconium belongs to the otherwise unclassified metals classification, while SAE-AISI 5140 steel belongs to the iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (11, 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 5140 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
170 to 290
Elastic (Young's, Tensile) Modulus, GPa 98
190
Elongation at Break, % 13
12 to 29
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 36
73
Tensile Strength: Ultimate (UTS), MPa 540
560 to 970
Tensile Strength: Yield (Proof), MPa 390
290 to 840

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Specific Heat Capacity, J/kg-K 270
470
Thermal Conductivity, W/m-K 18
45
Thermal Expansion, µm/m-K 5.7
13

Otherwise Unclassified Properties

Density, g/cm3 6.7
7.8
Embodied Water, L/kg 450
49

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 66
76 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 790
220 to 1880
Stiffness to Weight: Axial, points 8.1
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 22
20 to 34
Strength to Weight: Bending, points 22
19 to 28
Thermal Diffusivity, mm2/s 9.9
12
Thermal Shock Resistance, points 69
16 to 29

Alloy Composition

Carbon (C), % 0 to 0.1
0.38 to 0.43
Chromium (Cr), % 0
0.7 to 0.9
Hafnium (Hf), % 0 to 4.5
0
Hydrogen (H), % 0 to 0.0050
0
Iron (Fe), % 0 to 0.3
97.3 to 98.1
Manganese (Mn), % 0
0.7 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 0.035
Silicon (Si), % 0
0.15 to 0.35
Sulfur (S), % 0
0 to 0.040
Zirconium (Zr), % 91.9 to 98
0