R30006 Cobalt vs. SAE-AISI T1 Steel

R30006 cobalt belongs to the cobalt alloys classification, while SAE-AISI T1 steel belongs to the iron alloys. There are 20 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is R30006 cobalt and the bottom bar is SAE-AISI T1 steel.

UNS R30006 Co-Cr-W Alloy SAE-AISI T1 (T12001) Tungsten High-Speed Steel

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		220
Elastic (Young's, Tensile) Modulus, GPa		200

Poisson's Ratio		0.28
Poisson's Ratio		0.29

Shear Modulus, GPa		85
Shear Modulus, GPa		80

Tensile Strength: Ultimate (UTS), MPa		900
Tensile Strength: Ultimate (UTS), MPa		770 to 2130

Thermal Properties

Latent Heat of Fusion, J/g		320
Latent Heat of Fusion, J/g		240

Melting Completion (Liquidus), °C		1400
Melting Completion (Liquidus), °C		1810

Melting Onset (Solidus), °C		1290
Melting Onset (Solidus), °C		1750

Specific Heat Capacity, J/kg-K		450
Specific Heat Capacity, J/kg-K		410

Thermal Conductivity, W/m-K		15
Thermal Conductivity, W/m-K		20

Thermal Expansion, µm/m-K		11
Thermal Expansion, µm/m-K		12

Otherwise Unclassified Properties

Density, g/cm³		8.6
Density, g/cm³		9.3

Embodied Carbon, kg CO₂/kg material		7.8
Embodied Carbon, kg CO₂/kg material		8.2

Embodied Energy, MJ/kg		110
Embodied Energy, MJ/kg		130

Embodied Water, L/kg		500
Embodied Water, L/kg		90

Common Calculations

Stiffness to Weight: Axial, points		14
Stiffness to Weight: Axial, points		12

Stiffness to Weight: Bending, points		23
Stiffness to Weight: Bending, points		21

Strength to Weight: Axial, points		29
Strength to Weight: Axial, points		23 to 64

Strength to Weight: Bending, points		24
Strength to Weight: Bending, points		20 to 40

Thermal Diffusivity, mm²/s		3.9
Thermal Diffusivity, mm²/s		5.2

Thermal Shock Resistance, points		26
Thermal Shock Resistance, points		23 to 64

Alloy Composition

Carbon (C), %		0.9 to 1.4
Carbon (C), %		0.65 to 0.8

Chromium (Cr), %		27 to 32
Chromium (Cr), %		3.8 to 4.5

Cobalt (Co), %		48.6 to 68.1
Cobalt (Co), %		0

Copper (Cu), %		0
Copper (Cu), %		0 to 0.25

Iron (Fe), %		0 to 3.0
Iron (Fe), %		73.2 to 77.2

Manganese (Mn), %		0
Manganese (Mn), %		0.1 to 0.4

Molybdenum (Mo), %		0 to 1.0
Molybdenum (Mo), %		0

Nickel (Ni), %		0 to 3.0
Nickel (Ni), %		0 to 0.3

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

Silicon (Si), %		0 to 2.0
Silicon (Si), %		0.2 to 0.4

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

Tungsten (W), %		4.0 to 6.0
Tungsten (W), %		17.3 to 18.8

Vanadium (V), %		0
Vanadium (V), %		0.9 to 1.3