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SAE-AISI 1008 Steel vs. AWS BCo-1

SAE-AISI 1008 steel belongs to the iron alloys classification, while AWS BCo-1 belongs to the cobalt alloys. There are 18 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 1008 steel and the bottom bar is AWS BCo-1.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.3
Shear Modulus, GPa 73
78
Tensile Strength: Ultimate (UTS), MPa 330 to 370
700

Thermal Properties

Latent Heat of Fusion, J/g 250
420
Melting Completion (Liquidus), °C 1470
1150
Melting Onset (Solidus), °C 1430
1120
Specific Heat Capacity, J/kg-K 470
480
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Density, g/cm3 7.9
8.1
Embodied Carbon, kg CO2/kg material 1.4
8.0
Embodied Energy, MJ/kg 18
110
Embodied Water, L/kg 45
430

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 12 to 13
24
Strength to Weight: Bending, points 13 to 15
22
Thermal Shock Resistance, points 10 to 12
21

Alloy Composition

Aluminum (Al), % 0
0 to 0.050
Boron (B), % 0
0.7 to 0.9
Carbon (C), % 0 to 0.1
0.35 to 0.45
Chromium (Cr), % 0
18 to 20
Cobalt (Co), % 0
46 to 54
Iron (Fe), % 99.31 to 99.7
0 to 1.0
Manganese (Mn), % 0.3 to 0.5
0
Nickel (Ni), % 0
16 to 18
Phosphorus (P), % 0 to 0.040
0 to 0.020
Selenium (Se), % 0
0 to 0.0050
Silicon (Si), % 0
7.5 to 8.5
Sulfur (S), % 0 to 0.050
0 to 0.020
Titanium (Ti), % 0
0 to 0.050
Tungsten (W), % 0
3.5 to 4.5
Zirconium (Zr), % 0
0 to 0.050
Residuals, % 0
0 to 0.5