Type 2 Magnetic Alloy vs. G-CoCr28 Cobalt

Type 2 magnetic alloy belongs to the iron alloys classification, while G-CoCr28 cobalt belongs to the cobalt alloys. They have a modest 20% 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 Type 2 magnetic alloy and the bottom bar is G-CoCr28 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		190
Elastic (Young's, Tensile) Modulus, GPa		210

Elongation at Break, %		2.0 to 38
Elongation at Break, %		6.7

Poisson's Ratio		0.3
Poisson's Ratio		0.28

Shear Modulus, GPa		72
Shear Modulus, GPa		83

Tensile Strength: Ultimate (UTS), MPa		510 to 910
Tensile Strength: Ultimate (UTS), MPa		560

Tensile Strength: Yield (Proof), MPa		260 to 870
Tensile Strength: Yield (Proof), MPa		260

Thermal Properties

Latent Heat of Fusion, J/g		270
Latent Heat of Fusion, J/g		320

Melting Completion (Liquidus), °C		1420
Melting Completion (Liquidus), °C		1330

Melting Onset (Solidus), °C		1370
Melting Onset (Solidus), °C		1270

Specific Heat Capacity, J/kg-K		460
Specific Heat Capacity, J/kg-K		470

Thermal Expansion, µm/m-K		12
Thermal Expansion, µm/m-K		14

Otherwise Unclassified Properties

Base Metal Price, % relative		33
Base Metal Price, % relative		100

Density, g/cm³		8.4
Density, g/cm³		8.1

Embodied Carbon, kg CO₂/kg material		5.9
Embodied Carbon, kg CO₂/kg material		6.2

Embodied Energy, MJ/kg		81
Embodied Energy, MJ/kg		84

Embodied Water, L/kg		140
Embodied Water, L/kg		440

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m³		18 to 160
Resilience: Ultimate (Unit Rupture Work), MJ/m³		31

Resilience: Unit (Modulus of Resilience), kJ/m³		170 to 2010
Resilience: Unit (Modulus of Resilience), kJ/m³		160

Stiffness to Weight: Axial, points		12
Stiffness to Weight: Axial, points		15

Stiffness to Weight: Bending, points		23
Stiffness to Weight: Bending, points		24

Strength to Weight: Axial, points		17 to 30
Strength to Weight: Axial, points		19

Strength to Weight: Bending, points		17 to 25
Strength to Weight: Bending, points		19

Thermal Shock Resistance, points		16 to 29
Thermal Shock Resistance, points		14

Alloy Composition

Carbon (C), %		0 to 0.050
Carbon (C), %		0.050 to 0.25

Chromium (Cr), %		0 to 0.3
Chromium (Cr), %		27 to 30

Cobalt (Co), %		0 to 0.5
Cobalt (Co), %		48 to 52

Copper (Cu), %		0 to 0.3
Copper (Cu), %		0

Iron (Fe), %		48.2 to 53
Iron (Fe), %		9.7 to 24.5

Manganese (Mn), %		0 to 0.8
Manganese (Mn), %		0 to 1.5

Molybdenum (Mo), %		0 to 0.3
Molybdenum (Mo), %		0 to 0.5

Nickel (Ni), %		47 to 49
Nickel (Ni), %		0 to 4.0

Niobium (Nb), %		0
Niobium (Nb), %		0 to 0.5

Phosphorus (P), %		0 to 0.010
Phosphorus (P), %		0 to 0.040

Silicon (Si), %		0 to 0.5
Silicon (Si), %		0.5 to 1.5

Sulfur (S), %		0 to 0.030
Sulfur (S), %		0 to 0.030