SAE-AISI H26 Steel vs. R30001 Cobalt

SAE-AISI H26 steel belongs to the iron alloys classification, while R30001 cobalt belongs to the cobalt alloys. There are 20 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 SAE-AISI H26 steel and the bottom bar is R30001 cobalt.

SAE-AISI H26 (T20826) Tungsten Hot-Work Steel UNS R30001 Co-Cr-W Alloy

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		210
Elastic (Young's, Tensile) Modulus, GPa		220

Poisson's Ratio		0.29
Poisson's Ratio		0.28

Shear Modulus, GPa		80
Shear Modulus, GPa		86

Tensile Strength: Ultimate (UTS), MPa		720 to 2100
Tensile Strength: Ultimate (UTS), MPa		620

Thermal Properties

Latent Heat of Fusion, J/g		240
Latent Heat of Fusion, J/g		310

Melting Completion (Liquidus), °C		1810
Melting Completion (Liquidus), °C		1530

Melting Onset (Solidus), °C		1760
Melting Onset (Solidus), °C		1260

Specific Heat Capacity, J/kg-K		410
Specific Heat Capacity, J/kg-K		430

Thermal Conductivity, W/m-K		22
Thermal Conductivity, W/m-K		15

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

Otherwise Unclassified Properties

Density, g/cm³		9.3
Density, g/cm³		9.0

Embodied Carbon, kg CO₂/kg material		8.1
Embodied Carbon, kg CO₂/kg material		8.9

Embodied Energy, MJ/kg		120
Embodied Energy, MJ/kg		130

Embodied Water, L/kg		90
Embodied Water, L/kg		460

Common Calculations

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

Stiffness to Weight: Bending, points		21
Stiffness to Weight: Bending, points		22

Strength to Weight: Axial, points		22 to 63
Strength to Weight: Axial, points		19

Strength to Weight: Bending, points		19 to 39
Strength to Weight: Bending, points		18

Thermal Diffusivity, mm²/s		5.6
Thermal Diffusivity, mm²/s		3.7

Thermal Shock Resistance, points		22 to 63
Thermal Shock Resistance, points		19

Alloy Composition

Carbon (C), %		0.45 to 0.55
Carbon (C), %		2.0 to 3.0

Chromium (Cr), %		3.8 to 4.5
Chromium (Cr), %		28 to 32

Cobalt (Co), %		0
Cobalt (Co), %		43 to 59

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

Iron (Fe), %		73.3 to 77.5
Iron (Fe), %		0 to 3.0

Manganese (Mn), %		0.15 to 0.4
Manganese (Mn), %		0

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

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

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

Silicon (Si), %		0.15 to 0.4
Silicon (Si), %		0 to 2.0

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

Tungsten (W), %		17.3 to 19
Tungsten (W), %		11 to 13

Vanadium (V), %		0.75 to 1.3
Vanadium (V), %		0