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EN 1.7383 Steel vs. G-CoCr28 Cobalt

EN 1.7383 steel belongs to the iron alloys classification, while G-CoCr28 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 27 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is EN 1.7383 steel and the bottom bar is G-CoCr28 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 20 to 23
6.7
Fatigue Strength, MPa 210 to 270
130
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 74
83
Tensile Strength: Ultimate (UTS), MPa 560 to 610
560
Tensile Strength: Yield (Proof), MPa 300 to 400
260

Thermal Properties

Latent Heat of Fusion, J/g 260
320
Maximum Temperature: Mechanical, °C 460
1200
Melting Completion (Liquidus), °C 1470
1330
Melting Onset (Solidus), °C 1430
1270
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 39
8.5
Thermal Expansion, µm/m-K 13
14

Otherwise Unclassified Properties

Base Metal Price, % relative 3.9
100
Density, g/cm3 7.9
8.1
Embodied Carbon, kg CO2/kg material 1.8
6.2
Embodied Energy, MJ/kg 23
84
Embodied Water, L/kg 59
440

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
31
Resilience: Unit (Modulus of Resilience), kJ/m3 240 to 420
160
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 20 to 22
19
Strength to Weight: Bending, points 19 to 20
19
Thermal Diffusivity, mm2/s 11
2.2
Thermal Shock Resistance, points 16 to 18
14

Alloy Composition

Aluminum (Al), % 0 to 0.040
0
Carbon (C), % 0.080 to 0.15
0.050 to 0.25
Chromium (Cr), % 2.0 to 2.5
27 to 30
Cobalt (Co), % 0
48 to 52
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 94.3 to 96.6
9.7 to 24.5
Manganese (Mn), % 0.4 to 0.8
0 to 1.5
Molybdenum (Mo), % 0.9 to 1.1
0 to 0.5
Nickel (Ni), % 0 to 0.3
0 to 4.0
Niobium (Nb), % 0
0 to 0.5
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.5
0.5 to 1.5
Sulfur (S), % 0 to 0.010
0 to 0.030