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C68400 Brass vs. ACI-ASTM CN7M Steel

C68400 brass belongs to the copper alloys classification, while ACI-ASTM CN7M steel belongs to the iron alloys. There are 29 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 CN7M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
140
Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 18
44
Poisson's Ratio 0.31
0.28
Shear Modulus, GPa 41
77
Tensile Strength: Ultimate (UTS), MPa 540
480
Tensile Strength: Yield (Proof), MPa 310
200

Thermal Properties

Latent Heat of Fusion, J/g 210
310
Maximum Temperature: Mechanical, °C 130
1100
Melting Completion (Liquidus), °C 840
1410
Melting Onset (Solidus), °C 820
1450
Specific Heat Capacity, J/kg-K 400
470
Thermal Conductivity, W/m-K 66
21
Thermal Expansion, µm/m-K 20
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 87
1.6
Electrical Conductivity: Equal Weight (Specific), % IACS 99
1.8

Otherwise Unclassified Properties

Base Metal Price, % relative 23
32
Density, g/cm3 7.9
8.1
Embodied Carbon, kg CO2/kg material 2.7
5.6
Embodied Energy, MJ/kg 47
78
Embodied Water, L/kg 320
210

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 81
170
Resilience: Unit (Modulus of Resilience), kJ/m3 460
110
Stiffness to Weight: Axial, points 7.5
14
Stiffness to Weight: Bending, points 20
24
Strength to Weight: Axial, points 19
17
Strength to Weight: Bending, points 19
17
Thermal Diffusivity, mm2/s 21
5.6
Thermal Shock Resistance, points 18
12

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
19 to 22
Copper (Cu), % 59 to 64
3.0 to 4.0
Iron (Fe), % 0 to 1.0
37.4 to 48.5
Lead (Pb), % 0 to 0.090
0
Manganese (Mn), % 0.2 to 1.5
0 to 1.5
Molybdenum (Mo), % 0
2.0 to 3.0
Nickel (Ni), % 0 to 0.5
27.5 to 30.5
Phosphorus (P), % 0.030 to 0.3
0 to 0.040
Silicon (Si), % 1.5 to 2.5
0 to 1.5
Sulfur (S), % 0
0 to 0.040
Tin (Sn), % 0 to 0.5
0
Zinc (Zn), % 28.6 to 39.3
0
Residuals, % 0 to 0.5
0