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C68400 Brass vs. ACI-ASTM CB7Cu-2 Steel

C68400 brass belongs to the copper alloys classification, while ACI-ASTM CB7Cu-2 steel belongs to the iron alloys. There are 28 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is C68400 brass and the bottom bar is ACI-ASTM CB7Cu-2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
300 to 420
Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 18
5.7 to 11
Poisson's Ratio 0.31
0.28
Shear Modulus, GPa 41
75
Tensile Strength: Ultimate (UTS), MPa 540
960 to 1350
Tensile Strength: Yield (Proof), MPa 310
760 to 1180

Thermal Properties

Latent Heat of Fusion, J/g 210
280
Melting Completion (Liquidus), °C 840
1430
Melting Onset (Solidus), °C 820
1380
Specific Heat Capacity, J/kg-K 400
480
Thermal Conductivity, W/m-K 66
17
Thermal Expansion, µm/m-K 20
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 87
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 99
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 23
13
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 2.7
2.6
Embodied Energy, MJ/kg 47
38
Embodied Water, L/kg 320
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 81
71 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 460
1510 to 3600
Stiffness to Weight: Axial, points 7.5
14
Stiffness to Weight: Bending, points 20
25
Strength to Weight: Axial, points 19
34 to 48
Strength to Weight: Bending, points 19
28 to 35
Thermal Diffusivity, mm2/s 21
4.6
Thermal Shock Resistance, points 18
32 to 45

Alloy Composition

Aluminum (Al), % 0 to 0.5
0
Boron (B), % 0.0010 to 0.030
0
Carbon (C), % 0
0 to 0.070
Chromium (Cr), % 0
14 to 15.5
Copper (Cu), % 59 to 64
2.5 to 3.2
Iron (Fe), % 0 to 1.0
73.6 to 79
Lead (Pb), % 0 to 0.090
0
Manganese (Mn), % 0.2 to 1.5
0 to 0.7
Nickel (Ni), % 0 to 0.5
4.5 to 5.5
Niobium (Nb), % 0
0 to 0.35
Nitrogen (N), % 0
0 to 0.050
Phosphorus (P), % 0.030 to 0.3
0 to 0.035
Silicon (Si), % 1.5 to 2.5
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 0 to 0.5
0
Zinc (Zn), % 28.6 to 39.3
0
Residuals, % 0 to 0.5
0