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Nickel 684 vs. ACI-ASTM CB6 Steel

Nickel 684 belongs to the nickel alloys classification, while ACI-ASTM CB6 steel belongs to the iron alloys. They have a modest 24% of their average alloy composition in common, which, by itself, doesn't mean much. There are 26 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is nickel 684 and the bottom bar is ACI-ASTM CB6 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 11
18
Fatigue Strength, MPa 390
410
Poisson's Ratio 0.29
0.28
Reduction in Area, % 17
40
Shear Modulus, GPa 76
77
Tensile Strength: Ultimate (UTS), MPa 1190
880
Tensile Strength: Yield (Proof), MPa 800
660

Thermal Properties

Latent Heat of Fusion, J/g 320
280
Maximum Temperature: Mechanical, °C 1000
870
Melting Completion (Liquidus), °C 1370
1440
Melting Onset (Solidus), °C 1320
1390
Specific Heat Capacity, J/kg-K 470
480
Thermal Expansion, µm/m-K 13
10

Otherwise Unclassified Properties

Base Metal Price, % relative 75
12
Density, g/cm3 8.3
7.8
Embodied Carbon, kg CO2/kg material 10
2.5
Embodied Energy, MJ/kg 140
36
Embodied Water, L/kg 360
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
150
Resilience: Unit (Modulus of Resilience), kJ/m3 1610
1110
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 40
32
Strength to Weight: Bending, points 30
26
Thermal Shock Resistance, points 34
31

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 to 0.060
Chromium (Cr), % 15 to 20
15.5 to 17.5
Cobalt (Co), % 13 to 20
0
Copper (Cu), % 0 to 0.15
0
Iron (Fe), % 0 to 4.0
74.4 to 81
Manganese (Mn), % 0 to 0.75
0 to 1.0
Molybdenum (Mo), % 3.0 to 5.0
0 to 0.5
Nickel (Ni), % 42.7 to 64
3.5 to 5.5
Phosphorus (P), % 0 to 0.015
0 to 0.040
Silicon (Si), % 0 to 0.75
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030
Titanium (Ti), % 2.5 to 3.3
0