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SAE-AISI P21 Steel vs. CC765S Brass

SAE-AISI P21 steel belongs to the iron alloys classification, while CC765S brass belongs to the copper alloys. There are 23 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI P21 steel and the bottom bar is CC765S brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 73
42
Tensile Strength: Ultimate (UTS), MPa 1130
540

Thermal Properties

Latent Heat of Fusion, J/g 250
180
Melting Completion (Liquidus), °C 1450
860
Melting Onset (Solidus), °C 1410
820
Specific Heat Capacity, J/kg-K 470
400
Thermal Conductivity, W/m-K 41
91
Thermal Expansion, µm/m-K 12
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.9
30
Electrical Conductivity: Equal Weight (Specific), % IACS 9.0
34

Otherwise Unclassified Properties

Base Metal Price, % relative 6.5
24
Density, g/cm3 7.9
8.0
Embodied Carbon, kg CO2/kg material 2.3
3.0
Embodied Energy, MJ/kg 32
51
Embodied Water, L/kg 62
330

Common Calculations

Stiffness to Weight: Axial, points 13
7.6
Stiffness to Weight: Bending, points 24
20
Strength to Weight: Axial, points 40
19
Strength to Weight: Bending, points 31
18
Thermal Diffusivity, mm2/s 11
28
Thermal Shock Resistance, points 37
17

Alloy Composition

Aluminum (Al), % 0
0.5 to 2.5
Antimony (Sb), % 0
0 to 0.080
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
51 to 65
Iron (Fe), % 92.1 to 94.2
0.5 to 2.0
Lead (Pb), % 0
0 to 0.5
Manganese (Mn), % 0.35 to 0.72
0.3 to 3.0
Nickel (Ni), % 3.9 to 4.3
0 to 6.0
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.2 to 0.4
0 to 0.1
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
0 to 1.0
Vanadium (V), % 0.15 to 0.25
0
Zinc (Zn), % 0
19.8 to 47.7