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C21000 Brass vs. C99750 Brass

Both C21000 brass and C99750 brass are copper alloys. They have 63% of their average alloy composition in common. There are 27 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 C21000 brass and the bottom bar is C99750 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
130
Elongation at Break, % 2.9 to 50
20 to 30
Poisson's Ratio 0.34
0.32
Rockwell B Hardness 36 to 73
77 to 82
Shear Modulus, GPa 43
48
Tensile Strength: Ultimate (UTS), MPa 240 to 450
450 to 520
Tensile Strength: Yield (Proof), MPa 69 to 440
220 to 280

Thermal Properties

Latent Heat of Fusion, J/g 200
200
Maximum Temperature: Mechanical, °C 190
160
Melting Completion (Liquidus), °C 1070
840
Melting Onset (Solidus), °C 1050
820
Specific Heat Capacity, J/kg-K 390
410
Thermal Expansion, µm/m-K 18
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 56
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 57
2.2

Otherwise Unclassified Properties

Base Metal Price, % relative 30
23
Density, g/cm3 8.8
8.1
Embodied Carbon, kg CO2/kg material 2.6
3.1
Embodied Energy, MJ/kg 42
51
Embodied Water, L/kg 310
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 13 to 100
87 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 21 to 830
190 to 300
Stiffness to Weight: Axial, points 7.2
8.6
Stiffness to Weight: Bending, points 18
21
Strength to Weight: Axial, points 7.4 to 14
15 to 18
Strength to Weight: Bending, points 9.6 to 15
16 to 18
Thermal Shock Resistance, points 8.1 to 15
13 to 15

Alloy Composition

Aluminum (Al), % 0
0.25 to 3.0
Copper (Cu), % 94 to 96
55 to 61
Iron (Fe), % 0 to 0.050
0 to 1.0
Lead (Pb), % 0 to 0.030
0.5 to 2.5
Manganese (Mn), % 0
17 to 23
Nickel (Ni), % 0
0 to 5.0
Zinc (Zn), % 3.7 to 6.0
17 to 23
Residuals, % 0
0 to 0.3