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SAE-AISI P21 Steel vs. C85500 Brass

SAE-AISI P21 steel belongs to the iron alloys classification, while C85500 brass belongs to the copper alloys. There are 23 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI P21 steel and the bottom bar is C85500 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
100
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 73
40
Tensile Strength: Ultimate (UTS), MPa 1130
410

Thermal Properties

Latent Heat of Fusion, J/g 250
170
Melting Completion (Liquidus), °C 1450
900
Melting Onset (Solidus), °C 1410
890
Specific Heat Capacity, J/kg-K 470
390
Thermal Conductivity, W/m-K 41
120
Thermal Expansion, µm/m-K 12
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.9
26
Electrical Conductivity: Equal Weight (Specific), % IACS 9.0
29

Otherwise Unclassified Properties

Base Metal Price, % relative 6.5
23
Density, g/cm3 7.9
8.0
Embodied Carbon, kg CO2/kg material 2.3
2.7
Embodied Energy, MJ/kg 32
46
Embodied Water, L/kg 62
320

Common Calculations

Stiffness to Weight: Axial, points 13
7.3
Stiffness to Weight: Bending, points 24
20
Strength to Weight: Axial, points 40
14
Strength to Weight: Bending, points 31
15
Thermal Diffusivity, mm2/s 11
38
Thermal Shock Resistance, points 37
14

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
59 to 63
Iron (Fe), % 92.1 to 94.2
0 to 0.2
Lead (Pb), % 0
0 to 0.2
Manganese (Mn), % 0.35 to 0.72
0 to 0.2
Nickel (Ni), % 3.9 to 4.3
0 to 0.2
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0.2 to 0.4
0
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
0 to 0.2
Vanadium (V), % 0.15 to 0.25
0
Zinc (Zn), % 0
35.1 to 41
Residuals, % 0
0 to 0.9