Grade CW6M Nickel vs. AWS E630

Grade CW6M nickel belongs to the nickel alloys classification, while AWS E630 belongs to the iron alloys. They have a modest 24% of their average alloy composition in common, which, by itself, doesn't mean much. There are 20 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 grade CW6M nickel and the bottom bar is AWS E630.

Grade CW6M (J30107) Cast Nickel AWS E630 (W37410) Weld Metal

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		220
Elastic (Young's, Tensile) Modulus, GPa		190

Elongation at Break, %		29
Elongation at Break, %		8.0

Poisson's Ratio		0.29
Poisson's Ratio		0.28

Shear Modulus, GPa		84
Shear Modulus, GPa		76

Tensile Strength: Ultimate (UTS), MPa		560
Tensile Strength: Ultimate (UTS), MPa		1040

Thermal Properties

Latent Heat of Fusion, J/g		330
Latent Heat of Fusion, J/g		280

Melting Completion (Liquidus), °C		1530
Melting Completion (Liquidus), °C		1430

Melting Onset (Solidus), °C		1470
Melting Onset (Solidus), °C		1380

Specific Heat Capacity, J/kg-K		430
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		65
Base Metal Price, % relative		14

Density, g/cm³		8.8
Density, g/cm³		7.8

Embodied Carbon, kg CO₂/kg material		13
Embodied Carbon, kg CO₂/kg material		2.8

Embodied Energy, MJ/kg		170
Embodied Energy, MJ/kg		40

Embodied Water, L/kg		300
Embodied Water, L/kg		140

Common Calculations

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

Stiffness to Weight: Bending, points		23
Stiffness to Weight: Bending, points		25

Strength to Weight: Axial, points		18
Strength to Weight: Axial, points		37

Strength to Weight: Bending, points		17
Strength to Weight: Bending, points		29

Thermal Shock Resistance, points		16
Thermal Shock Resistance, points		28

Alloy Composition

Carbon (C), %		0 to 0.070
Carbon (C), %		0 to 0.050

Chromium (Cr), %		17 to 20
Chromium (Cr), %		16 to 16.8

Copper (Cu), %		0
Copper (Cu), %		3.3 to 4.0

Iron (Fe), %		0 to 3.0
Iron (Fe), %		71.6 to 75.9

Manganese (Mn), %		0 to 1.0
Manganese (Mn), %		0.25 to 0.75

Molybdenum (Mo), %		17 to 20
Molybdenum (Mo), %		0 to 0.75

Nickel (Ni), %		54.9 to 66
Nickel (Ni), %		4.5 to 5.0

Niobium (Nb), %		0
Niobium (Nb), %		0.15 to 0.3

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

Silicon (Si), %		0 to 1.0
Silicon (Si), %		0 to 0.75

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