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CC755S Brass vs. SAE-AISI 4145 Steel

CC755S brass belongs to the copper alloys classification, while SAE-AISI 4145 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 CC755S brass and the bottom bar is SAE-AISI 4145 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 110
310
Elastic (Young's, Tensile) Modulus, GPa 100
190
Elongation at Break, % 9.5
16
Poisson's Ratio 0.31
0.29
Shear Modulus, GPa 40
73
Tensile Strength: Ultimate (UTS), MPa 390
580
Tensile Strength: Yield (Proof), MPa 250
360

Thermal Properties

Latent Heat of Fusion, J/g 170
250
Maximum Temperature: Mechanical, °C 120
420
Melting Completion (Liquidus), °C 820
1460
Melting Onset (Solidus), °C 780
1420
Specific Heat Capacity, J/kg-K 390
470
Thermal Conductivity, W/m-K 120
42
Thermal Expansion, µm/m-K 21
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 30
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 23
2.4
Density, g/cm3 8.1
7.8
Embodied Carbon, kg CO2/kg material 2.7
1.5
Embodied Energy, MJ/kg 46
20
Embodied Water, L/kg 330
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 33
80
Resilience: Unit (Modulus of Resilience), kJ/m3 290
350
Stiffness to Weight: Axial, points 7.1
13
Stiffness to Weight: Bending, points 19
24
Strength to Weight: Axial, points 14
21
Strength to Weight: Bending, points 15
20
Thermal Diffusivity, mm2/s 38
11
Thermal Shock Resistance, points 13
17

Alloy Composition

Aluminum (Al), % 0.4 to 0.7
0
Carbon (C), % 0
0.43 to 0.48
Chromium (Cr), % 0
0.8 to 1.1
Copper (Cu), % 59.5 to 61
0
Iron (Fe), % 0.050 to 0.2
96.7 to 97.7
Lead (Pb), % 1.2 to 1.7
0
Manganese (Mn), % 0 to 0.050
0.75 to 1.0
Molybdenum (Mo), % 0
0.15 to 0.25
Nickel (Ni), % 0 to 0.2
0
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0 to 0.050
0.15 to 0.35
Sulfur (S), % 0
0 to 0.040
Tin (Sn), % 0 to 0.3
0
Zinc (Zn), % 35.8 to 38.9
0