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Nickel 684 vs. Austenitic Grey Cast Iron

Nickel 684 belongs to the nickel alloys classification, while austenitic grey cast iron belongs to the iron alloys. There are 20 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 nickel 684 and the bottom bar is austenitic grey cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 310
110 to 210
Elastic (Young's, Tensile) Modulus, GPa 200
180
Poisson's Ratio 0.29
0.29 to 0.3
Shear Modulus, GPa 76
69 to 72
Tensile Strength: Ultimate (UTS), MPa 1190
150 to 230

Thermal Properties

Latent Heat of Fusion, J/g 320
280 to 350
Melting Completion (Liquidus), °C 1370
1340 to 1400
Melting Onset (Solidus), °C 1320
1290 to 1350
Specific Heat Capacity, J/kg-K 470
470 to 490
Thermal Expansion, µm/m-K 13
13 to 14

Otherwise Unclassified Properties

Base Metal Price, % relative 75
14 to 24
Density, g/cm3 8.3
7.7 to 8.1
Embodied Carbon, kg CO2/kg material 10
3.1 to 4.7
Embodied Energy, MJ/kg 140
43 to 65
Embodied Water, L/kg 360
93 to 120

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
23 to 25
Strength to Weight: Axial, points 40
5.3 to 8.2
Strength to Weight: Bending, points 30
7.9 to 11
Thermal Shock Resistance, points 34
4.5 to 6.5