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ACI-ASTM CB7Cu-1 Steel vs. C37700 Brass

ACI-ASTM CB7Cu-1 steel belongs to the iron alloys classification, while C37700 brass belongs to the copper alloys. There are 27 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 ACI-ASTM CB7Cu-1 steel and the bottom bar is C37700 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
100
Elongation at Break, % 5.7 to 11
40
Poisson's Ratio 0.28
0.31
Shear Modulus, GPa 76
39
Tensile Strength: Ultimate (UTS), MPa 960 to 1350
400
Tensile Strength: Yield (Proof), MPa 760 to 1180
160

Thermal Properties

Latent Heat of Fusion, J/g 280
170
Melting Completion (Liquidus), °C 1430
890
Melting Onset (Solidus), °C 1500
880
Specific Heat Capacity, J/kg-K 480
380
Thermal Conductivity, W/m-K 17
120
Thermal Expansion, µm/m-K 11
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
27
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
30

Otherwise Unclassified Properties

Base Metal Price, % relative 13
23
Density, g/cm3 7.8
8.1
Embodied Carbon, kg CO2/kg material 2.6
2.6
Embodied Energy, MJ/kg 38
45
Embodied Water, L/kg 130
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 71 to 120
130
Resilience: Unit (Modulus of Resilience), kJ/m3 1500 to 3590
120
Stiffness to Weight: Axial, points 14
7.1
Stiffness to Weight: Bending, points 25
19
Strength to Weight: Axial, points 34 to 48
14
Strength to Weight: Bending, points 28 to 35
15
Thermal Diffusivity, mm2/s 4.6
39
Thermal Shock Resistance, points 32 to 45
13

Alloy Composition

Carbon (C), % 0 to 0.070
0
Chromium (Cr), % 15.5 to 17.7
0
Copper (Cu), % 2.5 to 3.2
58 to 61
Iron (Fe), % 72.3 to 78.4
0 to 0.3
Lead (Pb), % 0
1.5 to 2.5
Manganese (Mn), % 0 to 0.7
0
Nickel (Ni), % 3.6 to 4.6
0
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
Sulfur (S), % 0 to 0.030
0
Zinc (Zn), % 0
35.7 to 40.5
Residuals, % 0
0 to 0.5