AISI 308L Stainless Steel vs. Grade N7M Nickel

AISI 308L stainless steel belongs to the iron alloys classification, while grade N7M nickel belongs to the nickel alloys. There are 25 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is AISI 308L stainless steel and the bottom bar is grade N7M nickel.

AISI 308L (S30880, ER308) Stainless Steel 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

Fatigue Strength, MPa		180
Fatigue Strength, MPa		190

Poisson's Ratio		0.28
Poisson's Ratio		0.31

Shear Modulus, GPa		78
Shear Modulus, GPa		85

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

Tensile Strength: Yield (Proof), MPa		230
Tensile Strength: Yield (Proof), MPa		310

Thermal Properties

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

Maximum Temperature: Mechanical, °C		1010
Maximum Temperature: Mechanical, °C		900

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

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

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

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

Otherwise Unclassified Properties

Base Metal Price, % relative		16
Base Metal Price, % relative		75

Density, g/cm³		7.8
Density, g/cm³		9.3

Embodied Carbon, kg CO₂/kg material		3.2
Embodied Carbon, kg CO₂/kg material		16

Embodied Energy, MJ/kg		45
Embodied Energy, MJ/kg		200

Embodied Water, L/kg		160
Embodied Water, L/kg		270

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m³		160
Resilience: Ultimate (Unit Rupture Work), MJ/m³		110

Resilience: Unit (Modulus of Resilience), kJ/m³		140
Resilience: Unit (Modulus of Resilience), kJ/m³		220

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		21
Strength to Weight: Axial, points		18

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

Thermal Shock Resistance, points		13
Thermal Shock Resistance, points		19

Alloy Composition

Carbon (C), %		0 to 0.080
Carbon (C), %		0 to 0.070

Chromium (Cr), %		19.5 to 22
Chromium (Cr), %		0 to 1.0

Iron (Fe), %		63.8 to 70.5
Iron (Fe), %		0 to 3.0

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

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

Nickel (Ni), %		9.0 to 11
Nickel (Ni), %		60.9 to 70

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

Silicon (Si), %		0.25 to 0.6
Silicon (Si), %		0 to 1.0

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