Grade M30H Nickel vs. G-CoCr28 Cobalt

Grade M30H nickel belongs to the nickel alloys classification, while G-CoCr28 cobalt belongs to the cobalt alloys. There are 27 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is grade M30H nickel and the bottom bar is G-CoCr28 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		160
Elastic (Young's, Tensile) Modulus, GPa		210

Elongation at Break, %		11
Elongation at Break, %		6.7

Fatigue Strength, MPa		230
Fatigue Strength, MPa		130

Poisson's Ratio		0.32
Poisson's Ratio		0.28

Shear Modulus, GPa		61
Shear Modulus, GPa		83

Tensile Strength: Ultimate (UTS), MPa		770
Tensile Strength: Ultimate (UTS), MPa		560

Tensile Strength: Yield (Proof), MPa		470
Tensile Strength: Yield (Proof), MPa		260

Thermal Properties

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

Maximum Temperature: Mechanical, °C		900
Maximum Temperature: Mechanical, °C		1200

Melting Completion (Liquidus), °C		1250
Melting Completion (Liquidus), °C		1330

Melting Onset (Solidus), °C		1200
Melting Onset (Solidus), °C		1270

Specific Heat Capacity, J/kg-K		440
Specific Heat Capacity, J/kg-K		470

Thermal Conductivity, W/m-K		22
Thermal Conductivity, W/m-K		8.5

Thermal Expansion, µm/m-K		13
Thermal Expansion, µm/m-K		14

Otherwise Unclassified Properties

Base Metal Price, % relative		50
Base Metal Price, % relative		100

Density, g/cm³		8.6
Density, g/cm³		8.1

Embodied Carbon, kg CO₂/kg material		7.7
Embodied Carbon, kg CO₂/kg material		6.2

Embodied Energy, MJ/kg		110
Embodied Energy, MJ/kg		84

Embodied Water, L/kg		250
Embodied Water, L/kg		440

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m³		75
Resilience: Ultimate (Unit Rupture Work), MJ/m³		31

Resilience: Unit (Modulus of Resilience), kJ/m³		700
Resilience: Unit (Modulus of Resilience), kJ/m³		160

Stiffness to Weight: Axial, points		10
Stiffness to Weight: Axial, points		15

Stiffness to Weight: Bending, points		21
Stiffness to Weight: Bending, points		24

Strength to Weight: Axial, points		25
Strength to Weight: Axial, points		19

Strength to Weight: Bending, points		22
Strength to Weight: Bending, points		19

Thermal Diffusivity, mm²/s		5.7
Thermal Diffusivity, mm²/s		2.2

Thermal Shock Resistance, points		27
Thermal Shock Resistance, points		14

Alloy Composition

Carbon (C), %		0 to 0.3
Carbon (C), %		0.050 to 0.25

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

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

Copper (Cu), %		27 to 33
Copper (Cu), %		0

Iron (Fe), %		0 to 3.5
Iron (Fe), %		9.7 to 24.5

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

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

Nickel (Ni), %		57.9 to 70.3
Nickel (Ni), %		0 to 4.0

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

Phosphorus (P), %		0 to 0.030
Phosphorus (P), %		0 to 0.040

Silicon (Si), %		2.7 to 3.7
Silicon (Si), %		0.5 to 1.5

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