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C34500 Brass vs. SAE-AISI 4320 Steel

C34500 brass belongs to the copper alloys classification, while SAE-AISI 4320 steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is C34500 brass and the bottom bar is SAE-AISI 4320 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
190
Elongation at Break, % 12 to 28
21 to 29
Poisson's Ratio 0.31
0.29
Shear Modulus, GPa 40
73
Shear Strength, MPa 220 to 260
370 to 500
Tensile Strength: Ultimate (UTS), MPa 340 to 430
570 to 790
Tensile Strength: Yield (Proof), MPa 120 to 180
430 to 460

Thermal Properties

Latent Heat of Fusion, J/g 170
250
Maximum Temperature: Mechanical, °C 120
420
Melting Completion (Liquidus), °C 910
1460
Melting Onset (Solidus), °C 890
1420
Specific Heat Capacity, J/kg-K 380
470
Thermal Conductivity, W/m-K 120
46
Thermal Expansion, µm/m-K 21
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 26
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 29
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 24
3.4
Density, g/cm3 8.2
7.9
Embodied Carbon, kg CO2/kg material 2.6
1.7
Embodied Energy, MJ/kg 45
22
Embodied Water, L/kg 320
52

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 42 to 75
140 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 69 to 160
480 to 560
Stiffness to Weight: Axial, points 7.1
13
Stiffness to Weight: Bending, points 19
24
Strength to Weight: Axial, points 12 to 15
20 to 28
Strength to Weight: Bending, points 13 to 16
19 to 24
Thermal Diffusivity, mm2/s 37
13
Thermal Shock Resistance, points 11 to 14
19 to 27

Alloy Composition

Carbon (C), % 0
0.17 to 0.22
Chromium (Cr), % 0
0.4 to 0.6
Copper (Cu), % 62 to 65
0
Iron (Fe), % 0 to 0.15
95.8 to 97
Lead (Pb), % 1.5 to 2.5
0
Manganese (Mn), % 0
0.45 to 0.65
Molybdenum (Mo), % 0
0.2 to 0.3
Nickel (Ni), % 0
1.7 to 2.0
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0
0.15 to 0.35
Sulfur (S), % 0
0 to 0.040
Zinc (Zn), % 32 to 36.5
0
Residuals, % 0 to 0.4
0