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SAE-AISI P21 Steel vs. C24000 Brass

SAE-AISI P21 steel belongs to the iron alloys classification, while C24000 brass belongs to the copper alloys. There are 23 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI P21 steel and the bottom bar is C24000 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 73
42
Tensile Strength: Ultimate (UTS), MPa 1130
310 to 640

Thermal Properties

Latent Heat of Fusion, J/g 250
190
Melting Completion (Liquidus), °C 1450
1000
Melting Onset (Solidus), °C 1410
970
Specific Heat Capacity, J/kg-K 470
390
Thermal Conductivity, W/m-K 41
140
Thermal Expansion, µm/m-K 12
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.9
32
Electrical Conductivity: Equal Weight (Specific), % IACS 9.0
34

Otherwise Unclassified Properties

Base Metal Price, % relative 6.5
27
Density, g/cm3 7.9
8.5
Embodied Carbon, kg CO2/kg material 2.3
2.6
Embodied Energy, MJ/kg 32
43
Embodied Water, L/kg 62
320

Common Calculations

Stiffness to Weight: Axial, points 13
7.2
Stiffness to Weight: Bending, points 24
19
Strength to Weight: Axial, points 40
10 to 21
Strength to Weight: Bending, points 31
12 to 20
Thermal Diffusivity, mm2/s 11
43
Thermal Shock Resistance, points 37
10 to 22

Alloy Composition

Carbon (C), % 0.18 to 0.22
0
Chromium (Cr), % 0 to 0.5
0
Cobalt (Co), % 1.1 to 1.3
0
Copper (Cu), % 0 to 0.25
78.5 to 81.5
Iron (Fe), % 92.1 to 94.2
0 to 0.050
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 0.35 to 0.72
0
Nickel (Ni), % 3.9 to 4.3
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0.2 to 0.4
0
Sulfur (S), % 0 to 0.030
0
Vanadium (V), % 0.15 to 0.25
0
Zinc (Zn), % 0
18.2 to 21.5
Residuals, % 0
0 to 0.2