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EN 1.3961 Alloy vs. R30816 Cobalt

EN 1.3961 alloy belongs to the iron alloys classification, while R30816 cobalt belongs to the cobalt alloys. They have a modest 24% of their average alloy composition in common, which, by itself, doesn't mean much. There are 22 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 EN 1.3961 alloy and the bottom bar is R30816 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 31
23
Poisson's Ratio 0.3
0.3
Shear Modulus, GPa 72
81
Tensile Strength: Ultimate (UTS), MPa 450
1020
Tensile Strength: Yield (Proof), MPa 310
460

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Melting Completion (Liquidus), °C 1430
1540
Melting Onset (Solidus), °C 1390
1460
Specific Heat Capacity, J/kg-K 460
420
Thermal Expansion, µm/m-K 1.3
12

Otherwise Unclassified Properties

Density, g/cm3 8.2
9.1
Embodied Carbon, kg CO2/kg material 4.8
20
Embodied Energy, MJ/kg 66
320
Embodied Water, L/kg 110
440

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
190
Resilience: Unit (Modulus of Resilience), kJ/m3 250
510
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
22
Strength to Weight: Axial, points 15
31
Strength to Weight: Bending, points 16
25
Thermal Shock Resistance, points 130
28

Alloy Composition

Carbon (C), % 0 to 0.050
0.32 to 0.42
Chromium (Cr), % 0 to 0.25
19 to 21
Cobalt (Co), % 0
40 to 49.8
Iron (Fe), % 60.7 to 65
0 to 5.0
Manganese (Mn), % 0 to 0.5
1.0 to 2.0
Molybdenum (Mo), % 0 to 1.0
3.5 to 4.5
Nickel (Ni), % 35 to 37
19 to 21
Niobium (Nb), % 0
3.5 to 4.5
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.020
0 to 0.030
Tantalum (Ta), % 0
3.5 to 4.5
Tungsten (W), % 0
3.5 to 4.5