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C87800 Brass vs. ASTM A387 Grade 9 Steel

C87800 brass belongs to the copper alloys classification, while ASTM A387 grade 9 steel belongs to the iron alloys. There are 28 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 C87800 brass and the bottom bar is ASTM A387 grade 9 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 25
20 to 21
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 42
75
Tensile Strength: Ultimate (UTS), MPa 590
500 to 600
Tensile Strength: Yield (Proof), MPa 350
230 to 350

Thermal Properties

Latent Heat of Fusion, J/g 260
270
Maximum Temperature: Mechanical, °C 170
600
Melting Completion (Liquidus), °C 920
1460
Melting Onset (Solidus), °C 820
1410
Specific Heat Capacity, J/kg-K 410
470
Thermal Conductivity, W/m-K 28
26
Thermal Expansion, µm/m-K 18
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 6.7
9.0
Electrical Conductivity: Equal Weight (Specific), % IACS 7.3
10

Otherwise Unclassified Properties

Base Metal Price, % relative 27
6.5
Density, g/cm3 8.3
7.8
Embodied Carbon, kg CO2/kg material 2.7
2.1
Embodied Energy, MJ/kg 44
28
Embodied Water, L/kg 300
87

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
83 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 540
140 to 310
Stiffness to Weight: Axial, points 7.4
14
Stiffness to Weight: Bending, points 19
25
Strength to Weight: Axial, points 20
18 to 21
Strength to Weight: Bending, points 19
18 to 20
Thermal Diffusivity, mm2/s 8.3
6.9
Thermal Shock Resistance, points 21
14 to 17

Alloy Composition

Aluminum (Al), % 0 to 0.15
0
Antimony (Sb), % 0 to 0.050
0
Arsenic (As), % 0 to 0.050
0
Carbon (C), % 0
0 to 0.15
Chromium (Cr), % 0
8.0 to 10
Copper (Cu), % 80 to 84.2
0
Iron (Fe), % 0 to 0.15
87.1 to 90.8
Lead (Pb), % 0 to 0.15
0
Magnesium (Mg), % 0 to 0.010
0
Manganese (Mn), % 0 to 0.15
0.3 to 0.6
Molybdenum (Mo), % 0
0.9 to 1.1
Nickel (Ni), % 0 to 0.2
0
Phosphorus (P), % 0 to 0.010
0 to 0.025
Silicon (Si), % 3.8 to 4.2
0 to 1.0
Sulfur (S), % 0 to 0.050
0 to 0.025
Tin (Sn), % 0 to 0.25
0
Vanadium (V), % 0
0 to 0.040
Zinc (Zn), % 12 to 16
0
Residuals, % 0 to 0.5
0