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CC767S Brass vs. SAE-AISI 4340 Steel

CC767S brass belongs to the copper alloys classification, while SAE-AISI 4340 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 CC767S brass and the bottom bar is SAE-AISI 4340 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 86
210 to 360
Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 34
12 to 22
Poisson's Ratio 0.31
0.29
Shear Modulus, GPa 40
73
Tensile Strength: Ultimate (UTS), MPa 430
690 to 1280
Tensile Strength: Yield (Proof), MPa 150
470 to 1150

Thermal Properties

Latent Heat of Fusion, J/g 180
250
Maximum Temperature: Mechanical, °C 120
430
Melting Completion (Liquidus), °C 840
1460
Melting Onset (Solidus), °C 790
1420
Specific Heat Capacity, J/kg-K 390
470
Thermal Conductivity, W/m-K 110
44
Thermal Expansion, µm/m-K 21
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 36
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 23
3.5
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 2.7
1.7
Embodied Energy, MJ/kg 47
22
Embodied Water, L/kg 330
53

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
79 to 170
Resilience: Unit (Modulus of Resilience), kJ/m3 100
590 to 3490
Stiffness to Weight: Axial, points 7.3
13
Stiffness to Weight: Bending, points 20
24
Strength to Weight: Axial, points 15
24 to 45
Strength to Weight: Bending, points 16
22 to 33
Thermal Diffusivity, mm2/s 34
12
Thermal Shock Resistance, points 14
20 to 38

Alloy Composition

Aluminum (Al), % 0.1 to 0.8
0
Carbon (C), % 0
0.38 to 0.43
Chromium (Cr), % 0
0.7 to 0.9
Copper (Cu), % 58 to 64
0
Iron (Fe), % 0 to 0.5
95.1 to 96.3
Lead (Pb), % 0 to 0.1
0
Manganese (Mn), % 0 to 0.5
0.6 to 0.8
Molybdenum (Mo), % 0
0.2 to 0.3
Nickel (Ni), % 0 to 1.0
1.7 to 2.0
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0 to 0.2
0.15 to 0.35
Sulfur (S), % 0
0 to 0.040
Tin (Sn), % 0 to 0.1
0
Zinc (Zn), % 32.8 to 41.9
0