AWS E310Mo vs. Grade N7M Nickel

AWS E310Mo belongs to the iron alloys classification, while grade N7M nickel belongs to the nickel alloys. They have a modest 26% 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 E310Mo and the bottom bar is grade N7M nickel.

AWS E310Mo (W31020) 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		0.27
Poisson's Ratio		0.31

Shear Modulus, GPa		80
Shear Modulus, GPa		85

Tensile Strength: Ultimate (UTS), MPa		620
Tensile Strength: Ultimate (UTS), MPa		590

Thermal Properties

Latent Heat of Fusion, J/g		310
Latent Heat of Fusion, J/g		320

Melting Completion (Liquidus), °C		1420
Melting Completion (Liquidus), °C		1650

Melting Onset (Solidus), °C		1370
Melting Onset (Solidus), °C		1590

Specific Heat Capacity, J/kg-K		470
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		28
Base Metal Price, % relative		75

Density, g/cm³		7.9
Density, g/cm³		9.3

Embodied Carbon, kg CO₂/kg material		5.1
Embodied Carbon, kg CO₂/kg material		16

Embodied Energy, MJ/kg		71
Embodied Energy, MJ/kg		200

Embodied Water, L/kg		210
Embodied Water, L/kg		270

Common Calculations

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

Stiffness to Weight: Bending, points		25
Stiffness to Weight: Bending, points		22

Strength to Weight: Axial, points		22
Strength to Weight: Axial, points		18

Strength to Weight: Bending, points		20
Strength to Weight: Bending, points		17

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

Alloy Composition

Carbon (C), %		0 to 0.12
Carbon (C), %		0 to 0.070

Chromium (Cr), %		25 to 28
Chromium (Cr), %		0 to 1.0

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

Iron (Fe), %		42.8 to 52
Iron (Fe), %		0 to 3.0

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

Molybdenum (Mo), %		2.0 to 3.0
Molybdenum (Mo), %		30 to 33

Nickel (Ni), %		20 to 22
Nickel (Ni), %		60.9 to 70

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

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

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