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C87800 Brass vs. ASTM A387 Grade 91 Class 2

C87800 brass belongs to the copper alloys classification, while ASTM A387 grade 91 class 2 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 91 class 2.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 25
20
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 42
75
Tensile Strength: Ultimate (UTS), MPa 590
670
Tensile Strength: Yield (Proof), MPa 350
470

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
1420
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
8.9
Electrical Conductivity: Equal Weight (Specific), % IACS 7.3
10

Otherwise Unclassified Properties

Base Metal Price, % relative 27
7.0
Density, g/cm3 8.3
7.8
Embodied Carbon, kg CO2/kg material 2.7
2.6
Embodied Energy, MJ/kg 44
37
Embodied Water, L/kg 300
88

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
120
Resilience: Unit (Modulus of Resilience), kJ/m3 540
580
Stiffness to Weight: Axial, points 7.4
14
Stiffness to Weight: Bending, points 19
25
Strength to Weight: Axial, points 20
24
Strength to Weight: Bending, points 19
22
Thermal Diffusivity, mm2/s 8.3
6.9
Thermal Shock Resistance, points 21
19

Alloy Composition

Aluminum (Al), % 0 to 0.15
0 to 0.020
Antimony (Sb), % 0 to 0.050
0
Arsenic (As), % 0 to 0.050
0
Carbon (C), % 0
0.080 to 0.12
Chromium (Cr), % 0
8.0 to 9.5
Copper (Cu), % 80 to 84.2
0
Iron (Fe), % 0 to 0.15
87.3 to 90.3
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
0.85 to 1.1
Nickel (Ni), % 0 to 0.2
0 to 0.4
Niobium (Nb), % 0
0.060 to 0.1
Nitrogen (N), % 0
0.030 to 0.070
Phosphorus (P), % 0 to 0.010
0 to 0.020
Silicon (Si), % 3.8 to 4.2
0.2 to 0.5
Sulfur (S), % 0 to 0.050
0 to 0.010
Tin (Sn), % 0 to 0.25
0
Titanium (Ti), % 0
0 to 0.010
Vanadium (V), % 0
0.18 to 0.25
Zinc (Zn), % 12 to 16
0
Zirconium (Zr), % 0
0 to 0.010
Residuals, % 0 to 0.5
0