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SAE-AISI 4145 Steel vs. C66200 Brass

SAE-AISI 4145 steel belongs to the iron alloys classification, while C66200 brass belongs to the copper 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 SAE-AISI 4145 steel and the bottom bar is C66200 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 16
8.0 to 15
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 73
42
Shear Strength, MPa 360
270 to 300
Tensile Strength: Ultimate (UTS), MPa 580
450 to 520
Tensile Strength: Yield (Proof), MPa 360
410 to 480

Thermal Properties

Latent Heat of Fusion, J/g 250
200
Maximum Temperature: Mechanical, °C 420
180
Melting Completion (Liquidus), °C 1460
1070
Melting Onset (Solidus), °C 1420
1030
Specific Heat Capacity, J/kg-K 470
390
Thermal Conductivity, W/m-K 42
150
Thermal Expansion, µm/m-K 13
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
35
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
36

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
29
Density, g/cm3 7.8
8.7
Embodied Carbon, kg CO2/kg material 1.5
2.7
Embodied Energy, MJ/kg 20
43
Embodied Water, L/kg 51
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 80
40 to 66
Resilience: Unit (Modulus of Resilience), kJ/m3 350
760 to 1030
Stiffness to Weight: Axial, points 13
7.2
Stiffness to Weight: Bending, points 24
19
Strength to Weight: Axial, points 21
14 to 17
Strength to Weight: Bending, points 20
15 to 16
Thermal Diffusivity, mm2/s 11
45
Thermal Shock Resistance, points 17
16 to 18

Alloy Composition

Carbon (C), % 0.43 to 0.48
0
Chromium (Cr), % 0.8 to 1.1
0
Copper (Cu), % 0
86.6 to 91
Iron (Fe), % 96.7 to 97.7
0 to 0.050
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 0.75 to 1.0
0
Molybdenum (Mo), % 0.15 to 0.25
0
Nickel (Ni), % 0
0.3 to 1.0
Phosphorus (P), % 0 to 0.035
0.050 to 0.2
Silicon (Si), % 0.15 to 0.35
0
Sulfur (S), % 0 to 0.040
0
Tin (Sn), % 0
0.2 to 0.7
Zinc (Zn), % 0
6.5 to 12.9
Residuals, % 0
0 to 0.5