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Nickel 684 vs. SAE-AISI H22 Steel

Nickel 684 belongs to the nickel alloys classification, while SAE-AISI H22 steel belongs to the iron alloys. There are 19 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 nickel 684 and the bottom bar is SAE-AISI H22 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 76
77
Tensile Strength: Ultimate (UTS), MPa 1190
700 to 1920

Thermal Properties

Latent Heat of Fusion, J/g 320
250
Melting Completion (Liquidus), °C 1370
1670
Melting Onset (Solidus), °C 1320
1620
Specific Heat Capacity, J/kg-K 470
440
Thermal Expansion, µm/m-K 13
12

Otherwise Unclassified Properties

Base Metal Price, % relative 75
28
Density, g/cm3 8.3
8.7
Embodied Carbon, kg CO2/kg material 10
4.9
Embodied Energy, MJ/kg 140
73
Embodied Water, L/kg 360
72

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
22
Strength to Weight: Axial, points 40
22 to 61
Strength to Weight: Bending, points 30
20 to 39
Thermal Shock Resistance, points 34
22 to 60

Alloy Composition

Aluminum (Al), % 2.5 to 3.3
0
Boron (B), % 0.0030 to 0.010
0
Carbon (C), % 0 to 0.15
0.3 to 0.4
Chromium (Cr), % 15 to 20
1.8 to 3.8
Cobalt (Co), % 13 to 20
0
Copper (Cu), % 0 to 0.15
0 to 0.25
Iron (Fe), % 0 to 4.0
82.2 to 87.4
Manganese (Mn), % 0 to 0.75
0.15 to 0.4
Molybdenum (Mo), % 3.0 to 5.0
0
Nickel (Ni), % 42.7 to 64
0 to 0.3
Phosphorus (P), % 0 to 0.015
0 to 0.030
Silicon (Si), % 0 to 0.75
0.15 to 0.4
Sulfur (S), % 0 to 0.015
0 to 0.030
Titanium (Ti), % 2.5 to 3.3
0
Tungsten (W), % 0
10 to 11.8
Vanadium (V), % 0
0.25 to 0.5