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SAE-AISI T1 Steel vs. R30003 Cobalt

SAE-AISI T1 steel belongs to the iron alloys classification, while R30003 cobalt belongs to the cobalt alloys. They have a modest 20% of their average alloy composition in common, which, by itself, doesn't mean much. There are 21 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI T1 steel and the bottom bar is R30003 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 80
83
Tensile Strength: Ultimate (UTS), MPa 770 to 2130
970 to 1720

Thermal Properties

Latent Heat of Fusion, J/g 240
310
Melting Completion (Liquidus), °C 1810
1400
Melting Onset (Solidus), °C 1750
1440
Specific Heat Capacity, J/kg-K 410
450
Thermal Conductivity, W/m-K 20
13
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 45
95
Density, g/cm3 9.3
8.4
Embodied Carbon, kg CO2/kg material 8.2
8.0
Embodied Energy, MJ/kg 130
110
Embodied Water, L/kg 90
400

Common Calculations

Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 21
24
Strength to Weight: Axial, points 23 to 64
32 to 57
Strength to Weight: Bending, points 20 to 40
26 to 38
Thermal Diffusivity, mm2/s 5.2
3.3
Thermal Shock Resistance, points 23 to 64
26 to 45

Alloy Composition

Boron (B), % 0
0 to 0.1
Carbon (C), % 0.65 to 0.8
0 to 0.15
Chromium (Cr), % 3.8 to 4.5
19 to 21
Cobalt (Co), % 0
39 to 41
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 73.2 to 77.2
10 to 20.5
Manganese (Mn), % 0.1 to 0.4
1.5 to 2.5
Molybdenum (Mo), % 0
6.0 to 8.0
Nickel (Ni), % 0 to 0.3
14 to 16
Phosphorus (P), % 0 to 0.030
0 to 0.015
Silicon (Si), % 0.2 to 0.4
0 to 1.2
Sulfur (S), % 0 to 0.030
0 to 0.015
Tungsten (W), % 17.3 to 18.8
0
Vanadium (V), % 0.9 to 1.3
0

Comparable Variants