EN 2.4964 Cobalt vs. AWS E312

EN 2.4964 cobalt belongs to the cobalt alloys classification, while AWS E312 belongs to the iron alloys. They have a modest 32% of their average alloy composition in common, which, by itself, doesn't mean much. There are 19 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is EN 2.4964 cobalt and the bottom bar is AWS E312.

EN 2.4964 (CoCr20W15Ni) Cobalt Alloy AWS E312 (W31310) Weld Metal

Metric UnitsUS Customary Units

Mechanical Properties

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

Elongation at Break, %		40
Elongation at Break, %		25

Poisson's Ratio		0.29
Poisson's Ratio		0.27

Shear Modulus, GPa		86
Shear Modulus, GPa		80

Tensile Strength: Ultimate (UTS), MPa		960
Tensile Strength: Ultimate (UTS), MPa		740

Thermal Properties

Latent Heat of Fusion, J/g		290
Latent Heat of Fusion, J/g		310

Melting Completion (Liquidus), °C		1630
Melting Completion (Liquidus), °C		1410

Melting Onset (Solidus), °C		1550
Melting Onset (Solidus), °C		1360

Specific Heat Capacity, J/kg-K		400
Specific Heat Capacity, J/kg-K		480

Thermal Expansion, µm/m-K		12
Thermal Expansion, µm/m-K		15

Otherwise Unclassified Properties

Density, g/cm³		9.6
Density, g/cm³		7.7

Embodied Carbon, kg CO₂/kg material		9.8
Embodied Carbon, kg CO₂/kg material		3.6

Embodied Energy, MJ/kg		140
Embodied Energy, MJ/kg		52

Embodied Water, L/kg		450
Embodied Water, L/kg		200

Common Calculations

Stiffness to Weight: Axial, points		13
Stiffness to Weight: Axial, points		15

Stiffness to Weight: Bending, points		21
Stiffness to Weight: Bending, points		25

Strength to Weight: Axial, points		28
Strength to Weight: Axial, points		27

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

Thermal Shock Resistance, points		25
Thermal Shock Resistance, points		18

Alloy Composition

Carbon (C), %		0.050 to 0.15
Carbon (C), %		0 to 0.15

Chromium (Cr), %		19 to 21
Chromium (Cr), %		28 to 32

Cobalt (Co), %		46.4 to 58
Cobalt (Co), %		0

Copper (Cu), %		0
Copper (Cu), %		0 to 0.75

Iron (Fe), %		0 to 3.0
Iron (Fe), %		52.3 to 63.5

Manganese (Mn), %		0 to 2.0
Manganese (Mn), %		0.5 to 2.5

Molybdenum (Mo), %		0
Molybdenum (Mo), %		0 to 0.75

Nickel (Ni), %		9.0 to 11
Nickel (Ni), %		8.0 to 10.5

Phosphorus (P), %		0 to 0.020
Phosphorus (P), %		0 to 0.040

Silicon (Si), %		0 to 0.4
Silicon (Si), %		0 to 1.0

Sulfur (S), %		0 to 0.015
Sulfur (S), %		0 to 0.030

Tungsten (W), %		14 to 16
Tungsten (W), %		0