AWS E385 vs. Grade N7M Nickel

AWS E385 belongs to the iron alloys classification, while grade N7M nickel belongs to the nickel alloys. They have a modest 33% 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 AWS E385 and the bottom bar is grade N7M nickel.

AWS E385 (W88904) Weld Metal Grade N7M (J30007) Cast Nickel

Metric UnitsUS Customary Units

Mechanical Properties

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

Elongation at Break, %		34
Elongation at Break, %		22

Poisson's Ratio		0.28
Poisson's Ratio		0.31

Shear Modulus, GPa		79
Shear Modulus, GPa		85

Tensile Strength: Ultimate (UTS), MPa		580
Tensile Strength: Ultimate (UTS), MPa		590

Thermal Properties

Latent Heat of Fusion, J/g		300
Latent Heat of Fusion, J/g		320

Melting Completion (Liquidus), °C		1440
Melting Completion (Liquidus), °C		1650

Melting Onset (Solidus), °C		1390
Melting Onset (Solidus), °C		1590

Specific Heat Capacity, J/kg-K		460
Specific Heat Capacity, J/kg-K		390

Thermal Expansion, µm/m-K		14
Thermal Expansion, µm/m-K		9.9

Otherwise Unclassified Properties

Base Metal Price, % relative		31
Base Metal Price, % relative		75

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

Embodied Carbon, kg CO₂/kg material		5.8
Embodied Carbon, kg CO₂/kg material		16

Embodied Energy, MJ/kg		79
Embodied Energy, MJ/kg		200

Embodied Water, L/kg		200
Embodied Water, L/kg		270

Common Calculations

Stiffness to Weight: Axial, points		14
Stiffness to Weight: Axial, points		13

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

Strength to Weight: Axial, points		20
Strength to Weight: Axial, points		18

Strength to Weight: Bending, points		19
Strength to Weight: Bending, points		17

Thermal Shock Resistance, points		15
Thermal Shock Resistance, points		19

Alloy Composition

Carbon (C), %		0 to 0.030
Carbon (C), %		0 to 0.070

Chromium (Cr), %		19.5 to 21.5
Chromium (Cr), %		0 to 1.0

Copper (Cu), %		1.2 to 2.0
Copper (Cu), %		0

Iron (Fe), %		41.8 to 50.1
Iron (Fe), %		0 to 3.0

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

Molybdenum (Mo), %		4.2 to 5.2
Molybdenum (Mo), %		30 to 33

Nickel (Ni), %		24 to 26
Nickel (Ni), %		60.9 to 70

Phosphorus (P), %		0 to 0.030
Phosphorus (P), %		0 to 0.040

Silicon (Si), %		0 to 0.9
Silicon (Si), %		0 to 1.0

Sulfur (S), %		0 to 0.020
Sulfur (S), %		0 to 0.030