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ACI-ASTM CN3M Steel vs. C68700 Brass

ACI-ASTM CN3M steel belongs to the iron alloys classification, while C68700 brass belongs to the copper alloys. There are 26 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CN3M steel and the bottom bar is C68700 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 80
41
Tensile Strength: Ultimate (UTS), MPa 500
390
Tensile Strength: Yield (Proof), MPa 190
140

Thermal Properties

Latent Heat of Fusion, J/g 310
190
Maximum Temperature: Mechanical, °C 1100
160
Melting Completion (Liquidus), °C 1450
970
Melting Onset (Solidus), °C 1400
930
Specific Heat Capacity, J/kg-K 470
400
Thermal Conductivity, W/m-K 13
100
Thermal Expansion, µm/m-K 16
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
23
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
25

Otherwise Unclassified Properties

Base Metal Price, % relative 31
26
Density, g/cm3 8.1
8.3
Embodied Carbon, kg CO2/kg material 5.9
2.8
Embodied Energy, MJ/kg 80
46
Embodied Water, L/kg 200
340

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 89
90
Stiffness to Weight: Axial, points 14
7.3
Stiffness to Weight: Bending, points 24
19
Strength to Weight: Axial, points 17
13
Strength to Weight: Bending, points 17
14
Thermal Diffusivity, mm2/s 3.4
30
Thermal Shock Resistance, points 11
13

Alloy Composition

Aluminum (Al), % 0
1.8 to 2.5
Arsenic (As), % 0
0.020 to 0.1
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 20 to 22
0
Copper (Cu), % 0
76 to 79
Iron (Fe), % 42.4 to 52.5
0 to 0.060
Lead (Pb), % 0
0 to 0.070
Manganese (Mn), % 0 to 2.0
0
Molybdenum (Mo), % 4.5 to 5.5
0
Nickel (Ni), % 23 to 27
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.030
0
Zinc (Zn), % 0
17.8 to 22.2
Residuals, % 0
0 to 0.5