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EN 1.3961 Alloy vs. R30035 Cobalt

EN 1.3961 alloy belongs to the iron alloys classification, while R30035 cobalt belongs to the cobalt alloys. They have a modest 36% of their average alloy composition in common, which, by itself, doesn't mean much. There are 23 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 R30035 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
220 to 230
Elongation at Break, % 31
9.0 to 46
Poisson's Ratio 0.3
0.29
Shear Modulus, GPa 72
84 to 89
Tensile Strength: Ultimate (UTS), MPa 450
900 to 1900
Tensile Strength: Yield (Proof), MPa 310
300 to 1650

Thermal Properties

Latent Heat of Fusion, J/g 270
320
Melting Completion (Liquidus), °C 1430
1440
Melting Onset (Solidus), °C 1390
1320
Specific Heat Capacity, J/kg-K 460
440
Thermal Expansion, µm/m-K 1.3
13

Otherwise Unclassified Properties

Base Metal Price, % relative 25
100
Density, g/cm3 8.2
8.7
Embodied Carbon, kg CO2/kg material 4.8
10
Embodied Energy, MJ/kg 66
140
Embodied Water, L/kg 110
410

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
160 to 320
Resilience: Unit (Modulus of Resilience), kJ/m3 250
210 to 5920
Stiffness to Weight: Axial, points 13
14 to 15
Stiffness to Weight: Bending, points 23
23 to 24
Strength to Weight: Axial, points 15
29 to 61
Strength to Weight: Bending, points 16
24 to 39
Thermal Shock Resistance, points 130
23 to 46

Alloy Composition

Boron (B), % 0
0 to 0.015
Carbon (C), % 0 to 0.050
0 to 0.025
Chromium (Cr), % 0 to 0.25
19 to 21
Cobalt (Co), % 0
29.1 to 39
Iron (Fe), % 60.7 to 65
0 to 1.0
Manganese (Mn), % 0 to 0.5
0 to 0.15
Molybdenum (Mo), % 0 to 1.0
9.0 to 10.5
Nickel (Ni), % 35 to 37
33 to 37
Phosphorus (P), % 0 to 0.030
0 to 0.015
Silicon (Si), % 0 to 0.5
0 to 0.15
Sulfur (S), % 0 to 0.020
0 to 0.010
Titanium (Ti), % 0
0 to 1.0