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SAE-AISI T1 Steel vs. R30008 Cobalt

SAE-AISI T1 steel belongs to the iron alloys classification, while R30008 cobalt belongs to the cobalt alloys. There are 19 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 R30008 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
950 to 1700

Thermal Properties

Latent Heat of Fusion, J/g 240
320
Melting Completion (Liquidus), °C 1810
1400
Melting Onset (Solidus), °C 1750
1330
Specific Heat Capacity, J/kg-K 410
450
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
8.1
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
31 to 56
Strength to Weight: Bending, points 20 to 40
25 to 37
Thermal Shock Resistance, points 23 to 64
25 to 44

Alloy Composition

Boron (B), % 0
0 to 0.0010
Carbon (C), % 0.65 to 0.8
0 to 0.15
Chromium (Cr), % 3.8 to 4.5
18.5 to 21.5
Cobalt (Co), % 0
39 to 42
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 73.2 to 77.2
7.6 to 20
Manganese (Mn), % 0.1 to 0.4
1.0 to 2.0
Molybdenum (Mo), % 0
6.5 to 7.5
Nickel (Ni), % 0 to 0.3
15 to 18
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