Grade N7M Nickel vs. AWS E330H

Grade N7M nickel belongs to the nickel alloys classification, while AWS E330H belongs to the iron alloys. They have a modest 38% 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 N7M nickel and the bottom bar is AWS E330H.

Grade N7M (J30007) Cast Nickel AWS E330H (W88335) 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, %		22
Elongation at Break, %		11

Poisson's Ratio		0.31
Poisson's Ratio		0.29

Shear Modulus, GPa		85
Shear Modulus, GPa		76

Tensile Strength: Ultimate (UTS), MPa		590
Tensile Strength: Ultimate (UTS), MPa		690

Thermal Properties

Latent Heat of Fusion, J/g		320
Latent Heat of Fusion, J/g		290

Melting Completion (Liquidus), °C		1650
Melting Completion (Liquidus), °C		1400

Melting Onset (Solidus), °C		1590
Melting Onset (Solidus), °C		1350

Specific Heat Capacity, J/kg-K		390
Specific Heat Capacity, J/kg-K		470

Thermal Expansion, µm/m-K		9.9
Thermal Expansion, µm/m-K		13

Otherwise Unclassified Properties

Base Metal Price, % relative		75
Base Metal Price, % relative		30

Density, g/cm³		9.3
Density, g/cm³		8.1

Embodied Carbon, kg CO₂/kg material		16
Embodied Carbon, kg CO₂/kg material		5.4

Embodied Energy, MJ/kg		200
Embodied Energy, MJ/kg		76

Embodied Water, L/kg		270
Embodied Water, L/kg		180

Common Calculations

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

Stiffness to Weight: Bending, points		22
Stiffness to Weight: Bending, points		24

Strength to Weight: Axial, points		18
Strength to Weight: Axial, points		24

Strength to Weight: Bending, points		17
Strength to Weight: Bending, points		22

Thermal Shock Resistance, points		19
Thermal Shock Resistance, points		19

Alloy Composition

Carbon (C), %		0 to 0.070
Carbon (C), %		0.35 to 0.45

Chromium (Cr), %		0 to 1.0
Chromium (Cr), %		14 to 17

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

Iron (Fe), %		0 to 3.0
Iron (Fe), %		40.5 to 51.7

Manganese (Mn), %		0 to 1.0
Manganese (Mn), %		1.0 to 2.5

Molybdenum (Mo), %		30 to 33
Molybdenum (Mo), %		0 to 0.75

Nickel (Ni), %		60.9 to 70
Nickel (Ni), %		33 to 37

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

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

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