Grade N7M Nickel vs. AISI 384 Stainless Steel

Grade N7M nickel belongs to the nickel alloys classification, while AISI 384 stainless steel belongs to the iron alloys. They have a modest 21% 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 (12, in this case) are not shown.

For each property being compared, the top bar is grade N7M nickel and the bottom bar is AISI 384 stainless steel.

Grade N7M (J30007) Cast Nickel AISI 384 (S38400) Stainless Steel

Metric UnitsUS Customary Units

Mechanical Properties

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

Poisson's Ratio		0.31
Poisson's Ratio		0.28

Shear Modulus, GPa		85
Shear Modulus, GPa		76

Tensile Strength: Ultimate (UTS), MPa		590
Tensile Strength: Ultimate (UTS), MPa		480

Thermal Properties

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

Maximum Temperature: Mechanical, °C		900
Maximum Temperature: Mechanical, °C		910

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

Melting Onset (Solidus), °C		1590
Melting Onset (Solidus), °C		1380

Specific Heat Capacity, J/kg-K		390
Specific Heat Capacity, J/kg-K		480

Thermal Expansion, µm/m-K		9.9
Thermal Expansion, µm/m-K		16

Otherwise Unclassified Properties

Base Metal Price, % relative		75
Base Metal Price, % relative		20

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

Embodied Carbon, kg CO₂/kg material		16
Embodied Carbon, kg CO₂/kg material		3.7

Embodied Energy, MJ/kg		200
Embodied Energy, MJ/kg		52

Embodied Water, L/kg		270
Embodied Water, L/kg		150

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		24

Strength to Weight: Axial, points		18
Strength to Weight: Axial, points		17

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

Thermal Shock Resistance, points		19
Thermal Shock Resistance, points		11

Alloy Composition

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

Chromium (Cr), %		0 to 1.0
Chromium (Cr), %		15 to 17

Iron (Fe), %		0 to 3.0
Iron (Fe), %		60.9 to 68

Manganese (Mn), %		0 to 1.0
Manganese (Mn), %		0 to 2.0

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

Nickel (Ni), %		60.9 to 70
Nickel (Ni), %		17 to 19

Phosphorus (P), %		0 to 0.040
Phosphorus (P), %		0 to 0.045

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

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