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C69700 Brass vs. ACI-ASTM CB7Cu-2 Steel

C69700 brass belongs to the copper alloys classification, while ACI-ASTM CB7Cu-2 steel belongs to the iron alloys. There are 25 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is C69700 brass and the bottom bar is ACI-ASTM CB7Cu-2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 25
5.7 to 11
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 41
75
Tensile Strength: Ultimate (UTS), MPa 470
960 to 1350
Tensile Strength: Yield (Proof), MPa 230
760 to 1180

Thermal Properties

Latent Heat of Fusion, J/g 240
280
Melting Completion (Liquidus), °C 930
1430
Melting Onset (Solidus), °C 880
1380
Specific Heat Capacity, J/kg-K 400
480
Thermal Conductivity, W/m-K 43
17
Thermal Expansion, µm/m-K 19
11

Otherwise Unclassified Properties

Base Metal Price, % relative 26
13
Density, g/cm3 8.3
7.8
Embodied Carbon, kg CO2/kg material 2.7
2.6
Embodied Energy, MJ/kg 44
38
Embodied Water, L/kg 310
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 99
71 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 250
1510 to 3600
Stiffness to Weight: Axial, points 7.3
14
Stiffness to Weight: Bending, points 19
25
Strength to Weight: Axial, points 16
34 to 48
Strength to Weight: Bending, points 16
28 to 35
Thermal Diffusivity, mm2/s 13
4.6
Thermal Shock Resistance, points 16
32 to 45

Alloy Composition

Carbon (C), % 0
0 to 0.070
Chromium (Cr), % 0
14 to 15.5
Copper (Cu), % 75 to 80
2.5 to 3.2
Iron (Fe), % 0 to 0.2
73.6 to 79
Lead (Pb), % 0.5 to 1.5
0
Manganese (Mn), % 0 to 0.4
0 to 0.7
Nickel (Ni), % 0
4.5 to 5.5
Niobium (Nb), % 0
0 to 0.35
Nitrogen (N), % 0
0 to 0.050
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 2.5 to 3.5
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 13.9 to 22
0
Residuals, % 0 to 0.5
0