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SAE-AISI T1 Steel vs. R30016 Cobalt

SAE-AISI T1 steel belongs to the iron alloys classification, while R30016 cobalt belongs to the cobalt alloys. There are 20 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 T1 steel and the bottom bar is R30016 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
220
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 80
85
Tensile Strength: Ultimate (UTS), MPa 770 to 2130
1010

Thermal Properties

Latent Heat of Fusion, J/g 240
320
Melting Completion (Liquidus), °C 1810
1360
Melting Onset (Solidus), °C 1750
1270
Specific Heat Capacity, J/kg-K 410
450
Thermal Conductivity, W/m-K 20
15
Thermal Expansion, µm/m-K 12
14

Otherwise Unclassified Properties

Density, g/cm3 9.3
8.5
Embodied Carbon, kg CO2/kg material 8.2
7.7
Embodied Energy, MJ/kg 130
110
Embodied Water, L/kg 90
500

Common Calculations

Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 21
24
Strength to Weight: Axial, points 23 to 64
33
Strength to Weight: Bending, points 20 to 40
26
Thermal Diffusivity, mm2/s 5.2
3.9
Thermal Shock Resistance, points 23 to 64
24

Alloy Composition

Carbon (C), % 0.65 to 0.8
0.9 to 1.4
Chromium (Cr), % 3.8 to 4.5
28 to 32
Cobalt (Co), % 0
49.6 to 66.9
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 73.2 to 77.2
0 to 3.0
Manganese (Mn), % 0.1 to 0.4
0.5 to 2.0
Molybdenum (Mo), % 0
0 to 1.5
Nickel (Ni), % 0 to 0.3
0 to 3.0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0.2 to 0.4
0.2 to 2.0
Sulfur (S), % 0 to 0.030
0
Tungsten (W), % 17.3 to 18.8
3.5 to 5.5
Vanadium (V), % 0.9 to 1.3
0