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SAE-AISI T8 Steel vs. Grade 704C Zirconium

SAE-AISI T8 steel belongs to the iron alloys classification, while grade 704C zirconium belongs to the otherwise unclassified metals. There are 16 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 SAE-AISI T8 steel and the bottom bar is grade 704C zirconium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
97
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 78
36
Tensile Strength: Ultimate (UTS), MPa 780 to 2140
470

Thermal Properties

Latent Heat of Fusion, J/g 250
240
Specific Heat Capacity, J/kg-K 420
270
Thermal Conductivity, W/m-K 18
21
Thermal Expansion, µm/m-K 12
5.9

Otherwise Unclassified Properties

Density, g/cm3 9.0
6.7
Embodied Water, L/kg 120
460

Common Calculations

Stiffness to Weight: Axial, points 12
8.1
Stiffness to Weight: Bending, points 22
23
Strength to Weight: Axial, points 24 to 66
20
Strength to Weight: Bending, points 21 to 41
20
Thermal Diffusivity, mm2/s 4.8
12
Thermal Shock Resistance, points 24 to 66
58

Alloy Composition

Carbon (C), % 0.75 to 0.85
0 to 0.1
Chromium (Cr), % 3.8 to 4.5
0
Cobalt (Co), % 4.3 to 5.8
0
Copper (Cu), % 0 to 0.25
0
Hafnium (Hf), % 0
0 to 4.5
Hydrogen (H), % 0
0 to 0.0050
Iron (Fe), % 69.3 to 75.4
0 to 0.3
Manganese (Mn), % 0.2 to 0.4
0
Molybdenum (Mo), % 0.4 to 1.0
0
Nickel (Ni), % 0 to 0.3
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), % 0.2 to 0.4
0
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
1.0 to 2.0
Tungsten (W), % 13.3 to 14.8
0
Vanadium (V), % 1.8 to 2.4
0
Zirconium (Zr), % 0
92.9 to 99