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SAE-AISI A9 Steel vs. C87900 Brass

SAE-AISI A9 steel belongs to the iron alloys classification, while C87900 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 A9 steel and the bottom bar is C87900 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 74
41
Tensile Strength: Ultimate (UTS), MPa 770 to 2030
480

Thermal Properties

Latent Heat of Fusion, J/g 280
190
Melting Completion (Liquidus), °C 1460
930
Melting Onset (Solidus), °C 1410
900
Specific Heat Capacity, J/kg-K 470
390
Thermal Conductivity, W/m-K 35
120
Thermal Expansion, µm/m-K 12
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.9
15
Electrical Conductivity: Equal Weight (Specific), % IACS 9.2
17

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
24
Density, g/cm3 7.8
8.1
Embodied Carbon, kg CO2/kg material 4.7
2.7
Embodied Energy, MJ/kg 70
46
Embodied Water, L/kg 82
320

Common Calculations

Stiffness to Weight: Axial, points 14
7.3
Stiffness to Weight: Bending, points 25
20
Strength to Weight: Axial, points 28 to 73
17
Strength to Weight: Bending, points 24 to 46
17
Thermal Diffusivity, mm2/s 9.6
37
Thermal Shock Resistance, points 25 to 66
16

Alloy Composition

Aluminum (Al), % 0
0 to 0.15
Antimony (Sb), % 0
0 to 0.050
Arsenic (As), % 0
0 to 0.050
Carbon (C), % 0.45 to 0.55
0
Chromium (Cr), % 4.8 to 5.5
0
Copper (Cu), % 0 to 0.25
63 to 69.2
Iron (Fe), % 87 to 90.5
0 to 0.4
Lead (Pb), % 0
0 to 0.25
Manganese (Mn), % 0 to 0.5
0 to 0.15
Molybdenum (Mo), % 1.3 to 1.8
0
Nickel (Ni), % 1.3 to 1.8
0 to 0.5
Phosphorus (P), % 0 to 0.030
0 to 0.010
Silicon (Si), % 1.0 to 1.2
0.8 to 1.2
Sulfur (S), % 0 to 0.030
0 to 0.050
Tin (Sn), % 0
0 to 0.25
Vanadium (V), % 0.8 to 1.4
0
Zinc (Zn), % 0
30 to 36