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SAE-AISI A8 Steel vs. Grade 705C Zirconium

SAE-AISI A8 steel belongs to the iron alloys classification, while grade 705C zirconium belongs to the otherwise unclassified metals. There are 16 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 SAE-AISI A8 steel and the bottom bar is grade 705C zirconium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
98
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 74
36
Tensile Strength: Ultimate (UTS), MPa 700 to 1920
540

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Specific Heat Capacity, J/kg-K 470
270
Thermal Conductivity, W/m-K 37
18
Thermal Expansion, µm/m-K 12
5.7

Otherwise Unclassified Properties

Density, g/cm3 7.9
6.7
Embodied Water, L/kg 73
450

Common Calculations

Stiffness to Weight: Axial, points 14
8.1
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 25 to 68
22
Strength to Weight: Bending, points 22 to 44
22
Thermal Diffusivity, mm2/s 9.9
9.9
Thermal Shock Resistance, points 22 to 62
69

Alloy Composition

Carbon (C), % 0.5 to 0.6
0 to 0.1
Chromium (Cr), % 4.8 to 5.5
0
Copper (Cu), % 0 to 0.25
0
Hafnium (Hf), % 0
0 to 4.5
Hydrogen (H), % 0
0 to 0.0050
Iron (Fe), % 88.5 to 91.9
0 to 0.3
Manganese (Mn), % 0 to 0.5
0
Molybdenum (Mo), % 1.2 to 1.7
0
Nickel (Ni), % 0 to 0.3
0
Niobium (Nb), % 0
2.0 to 3.0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.3
Phosphorus (P), % 0 to 0.030
0 to 0.010
Silicon (Si), % 0.75 to 1.1
0
Sulfur (S), % 0 to 0.030
0
Tungsten (W), % 1.0 to 1.5
0
Zirconium (Zr), % 0
91.9 to 98