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ACI-ASTM CB7Cu-2 Steel vs. ZA-27

ACI-ASTM CB7Cu-2 steel belongs to the iron alloys classification, while ZA-27 belongs to the zinc alloys. There are 29 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 ACI-ASTM CB7Cu-2 steel and the bottom bar is ZA-27.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 300 to 420
100 to 120
Elastic (Young's, Tensile) Modulus, GPa 190
78
Elongation at Break, % 5.7 to 11
2.0 to 4.5
Fatigue Strength, MPa 420 to 590
110 to 170
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 75
31
Tensile Strength: Ultimate (UTS), MPa 960 to 1350
400 to 430
Tensile Strength: Yield (Proof), MPa 760 to 1180
260 to 370

Thermal Properties

Latent Heat of Fusion, J/g 280
130
Melting Completion (Liquidus), °C 1430
480
Melting Onset (Solidus), °C 1380
380
Specific Heat Capacity, J/kg-K 480
530
Thermal Conductivity, W/m-K 17
130
Thermal Expansion, µm/m-K 11
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
30
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
53

Otherwise Unclassified Properties

Base Metal Price, % relative 13
11
Density, g/cm3 7.8
5.0
Embodied Carbon, kg CO2/kg material 2.6
4.2
Embodied Energy, MJ/kg 38
80
Embodied Water, L/kg 130
570

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 71 to 120
8.1 to 18
Resilience: Unit (Modulus of Resilience), kJ/m3 1510 to 3600
420 to 890
Stiffness to Weight: Axial, points 14
8.6
Stiffness to Weight: Bending, points 25
28
Strength to Weight: Axial, points 34 to 48
22 to 24
Strength to Weight: Bending, points 28 to 35
24 to 25
Thermal Diffusivity, mm2/s 4.6
47
Thermal Shock Resistance, points 32 to 45
14 to 15

Alloy Composition

Aluminum (Al), % 0
25 to 28
Cadmium (Cd), % 0
0 to 0.0060
Carbon (C), % 0 to 0.070
0
Chromium (Cr), % 14 to 15.5
0
Copper (Cu), % 2.5 to 3.2
2.0 to 2.5
Iron (Fe), % 73.6 to 79
0 to 0.1
Lead (Pb), % 0
0 to 0.0060
Magnesium (Mg), % 0
0.010 to 0.020
Manganese (Mn), % 0 to 0.7
0
Nickel (Ni), % 4.5 to 5.5
0 to 0.020
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 0.080
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
0 to 0.0030
Zinc (Zn), % 0
69.3 to 73