Grade N7M Nickel vs. AWS E316LMn

Grade N7M nickel belongs to the nickel alloys classification, while AWS E316LMn belongs to the iron alloys. They have a modest 23% 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 (6, in this case) are not shown.

For each property being compared, the top bar is grade N7M nickel and the bottom bar is AWS E316LMn.

Grade N7M (J30007) Cast Nickel AWS E316LMn (W31622) 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, %		22
Elongation at Break, %		23

Poisson's Ratio		0.31
Poisson's Ratio		0.28

Shear Modulus, GPa		85
Shear Modulus, GPa		79

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

Thermal Properties

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

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

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

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		14

Otherwise Unclassified Properties

Base Metal Price, % relative		75
Base Metal Price, % relative		24

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

Embodied Carbon, kg CO₂/kg material		16
Embodied Carbon, kg CO₂/kg material		4.6

Embodied Energy, MJ/kg		200
Embodied Energy, MJ/kg		64

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

Common Calculations

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

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

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

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

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

Alloy Composition

Carbon (C), %		0 to 0.070
Carbon (C), %		0 to 0.040

Chromium (Cr), %		0 to 1.0
Chromium (Cr), %		18 to 21

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

Iron (Fe), %		0 to 3.0
Iron (Fe), %		47.5 to 59.4

Manganese (Mn), %		0 to 1.0
Manganese (Mn), %		5.0 to 8.0

Molybdenum (Mo), %		30 to 33
Molybdenum (Mo), %		2.5 to 3.5

Nickel (Ni), %		60.9 to 70
Nickel (Ni), %		15 to 18

Nitrogen (N), %		0
Nitrogen (N), %		0.1 to 0.25

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

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

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