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ACI-ASTM CB7Cu-2 Steel vs. Nickel 690

ACI-ASTM CB7Cu-2 steel belongs to the iron alloys classification, while nickel 690 belongs to the nickel alloys. They have a modest 30% of their average alloy composition in common, which, by itself, doesn't mean much. There are 29 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CB7Cu-2 steel and the bottom bar is nickel 690.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 300 to 420
90
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 5.7 to 11
3.4 to 34
Fatigue Strength, MPa 420 to 590
180 to 300
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
79
Tensile Strength: Ultimate (UTS), MPa 960 to 1350
640 to 990
Tensile Strength: Yield (Proof), MPa 760 to 1180
250 to 760

Thermal Properties

Latent Heat of Fusion, J/g 280
320
Melting Completion (Liquidus), °C 1430
1380
Melting Onset (Solidus), °C 1380
1340
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 17
14
Thermal Expansion, µm/m-K 11
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
1.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
1.6

Otherwise Unclassified Properties

Base Metal Price, % relative 13
50
Density, g/cm3 7.8
8.3
Embodied Carbon, kg CO2/kg material 2.6
8.2
Embodied Energy, MJ/kg 38
120
Embodied Water, L/kg 130
290

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 71 to 120
31 to 170
Resilience: Unit (Modulus of Resilience), kJ/m3 1510 to 3600
160 to 1440
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 34 to 48
21 to 33
Strength to Weight: Bending, points 28 to 35
20 to 27
Thermal Diffusivity, mm2/s 4.6
3.5
Thermal Shock Resistance, points 32 to 45
16 to 25

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.050
Chromium (Cr), % 14 to 15.5
27 to 31
Copper (Cu), % 2.5 to 3.2
0 to 0.5
Iron (Fe), % 73.6 to 79
7.0 to 11
Manganese (Mn), % 0 to 0.7
0 to 0.5
Nickel (Ni), % 4.5 to 5.5
58 to 66
Niobium (Nb), % 0 to 0.35
0
Nitrogen (N), % 0 to 0.050
0
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.015