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SAE-AISI T1 Steel vs. EN 2.4964 Cobalt

SAE-AISI T1 steel belongs to the iron alloys classification, while EN 2.4964 cobalt belongs to the cobalt alloys. They have a modest 21% of their average alloy composition in common, which, by itself, doesn't mean much. There are 20 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI T1 steel and the bottom bar is EN 2.4964 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
220
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 80
86
Tensile Strength: Ultimate (UTS), MPa 770 to 2130
960

Thermal Properties

Latent Heat of Fusion, J/g 240
290
Melting Completion (Liquidus), °C 1810
1630
Melting Onset (Solidus), °C 1750
1550
Specific Heat Capacity, J/kg-K 410
400
Thermal Conductivity, W/m-K 20
15
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Density, g/cm3 9.3
9.6
Embodied Carbon, kg CO2/kg material 8.2
9.8
Embodied Energy, MJ/kg 130
140
Embodied Water, L/kg 90
450

Common Calculations

Stiffness to Weight: Axial, points 12
13
Stiffness to Weight: Bending, points 21
21
Strength to Weight: Axial, points 23 to 64
28
Strength to Weight: Bending, points 20 to 40
23
Thermal Diffusivity, mm2/s 5.2
3.9
Thermal Shock Resistance, points 23 to 64
25

Alloy Composition

Carbon (C), % 0.65 to 0.8
0.050 to 0.15
Chromium (Cr), % 3.8 to 4.5
19 to 21
Cobalt (Co), % 0
46.4 to 58
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 to 2.0
Nickel (Ni), % 0 to 0.3
9.0 to 11
Phosphorus (P), % 0 to 0.030
0 to 0.020
Silicon (Si), % 0.2 to 0.4
0 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.015
Tungsten (W), % 17.3 to 18.8
14 to 16
Vanadium (V), % 0.9 to 1.3
0