Nickel 684 vs. SAE-AISI A9 Steel

Nickel 684 belongs to the nickel alloys classification, while SAE-AISI A9 steel belongs to the iron alloys. There are 19 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is nickel 684 and the bottom bar is SAE-AISI A9 steel.

Nickel Alloy 684 (2.4983, N07500)SAE-AISI A9 (T30109) Air-Hardening Steel

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		200
Elastic (Young's, Tensile) Modulus, GPa		190

Poisson's Ratio		0.29
Poisson's Ratio		0.29

Shear Modulus, GPa		76
Shear Modulus, GPa		74

Tensile Strength: Ultimate (UTS), MPa		1190
Tensile Strength: Ultimate (UTS), MPa		770 to 2030

Thermal Properties

Latent Heat of Fusion, J/g		320
Latent Heat of Fusion, J/g		280

Melting Completion (Liquidus), °C		1370
Melting Completion (Liquidus), °C		1460

Melting Onset (Solidus), °C		1320
Melting Onset (Solidus), °C		1410

Specific Heat Capacity, J/kg-K		470
Specific Heat Capacity, J/kg-K		470

Thermal Expansion, µm/m-K		13
Thermal Expansion, µm/m-K		12

Otherwise Unclassified Properties

Base Metal Price, % relative		75
Base Metal Price, % relative		7.0

Density, g/cm³		8.3
Density, g/cm³		7.8

Embodied Carbon, kg CO₂/kg material		10
Embodied Carbon, kg CO₂/kg material		4.7

Embodied Energy, MJ/kg		140
Embodied Energy, MJ/kg		70

Embodied Water, L/kg		360
Embodied Water, L/kg		82

Common Calculations

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

Stiffness to Weight: Bending, points		23
Stiffness to Weight: Bending, points		25

Strength to Weight: Axial, points		40
Strength to Weight: Axial, points		28 to 73

Strength to Weight: Bending, points		30
Strength to Weight: Bending, points		24 to 46

Thermal Shock Resistance, points		34
Thermal Shock Resistance, points		25 to 66

Alloy Composition

Aluminum (Al), %		2.5 to 3.3
Aluminum (Al), %		0

Boron (B), %		0.0030 to 0.010
Boron (B), %		0

Carbon (C), %		0 to 0.15
Carbon (C), %		0.45 to 0.55

Chromium (Cr), %		15 to 20
Chromium (Cr), %		4.8 to 5.5

Cobalt (Co), %		13 to 20
Cobalt (Co), %		0

Copper (Cu), %		0 to 0.15
Copper (Cu), %		0 to 0.25

Iron (Fe), %		0 to 4.0
Iron (Fe), %		87 to 90.5

Manganese (Mn), %		0 to 0.75
Manganese (Mn), %		0 to 0.5

Molybdenum (Mo), %		3.0 to 5.0
Molybdenum (Mo), %		1.3 to 1.8

Nickel (Ni), %		42.7 to 64
Nickel (Ni), %		1.3 to 1.8

Phosphorus (P), %		0 to 0.015
Phosphorus (P), %		0 to 0.030

Silicon (Si), %		0 to 0.75
Silicon (Si), %		1.0 to 1.2

Sulfur (S), %		0 to 0.015
Sulfur (S), %		0 to 0.030

Titanium (Ti), %		2.5 to 3.3
Titanium (Ti), %		0

Vanadium (V), %		0
Vanadium (V), %		0.8 to 1.4