C21000 Brass vs. C43400 Brass
Both C21000 brass and C43400 brass are copper alloys. They have a moderately high 90% of their average alloy composition in common.
For each property being compared, the top bar is C21000 brass and the bottom bar is C43400 brass.
Metric UnitsUS Customary Units
Mechanical Properties
Elastic (Young's, Tensile) Modulus, GPa | 110 | |
110 |
Elongation at Break, % | 2.9 to 50 | |
3.0 to 49 |
Poisson's Ratio | 0.34 | |
0.33 |
Rockwell B Hardness | 36 to 73 | |
54 to 94 |
Rockwell Superficial 30T Hardness | 44 to 68 | |
22 to 84 |
Shear Modulus, GPa | 43 | |
42 |
Shear Strength, MPa | 180 to 280 | |
250 to 390 |
Tensile Strength: Ultimate (UTS), MPa | 240 to 450 | |
310 to 690 |
Tensile Strength: Yield (Proof), MPa | 69 to 440 | |
110 to 560 |
Thermal Properties
Latent Heat of Fusion, J/g | 200 | |
190 |
Maximum Temperature: Mechanical, °C | 190 | |
170 |
Melting Completion (Liquidus), °C | 1070 | |
1020 |
Melting Onset (Solidus), °C | 1050 | |
990 |
Specific Heat Capacity, J/kg-K | 390 | |
380 |
Thermal Conductivity, W/m-K | 230 | |
140 |
Thermal Expansion, µm/m-K | 18 | |
19 |
Electrical Properties
Electrical Conductivity: Equal Volume, % IACS | 56 | |
31 |
Electrical Conductivity: Equal Weight (Specific), % IACS | 57 | |
32 |
Otherwise Unclassified Properties
Base Metal Price, % relative | 30 | |
28 |
Density, g/cm3 | 8.8 | |
8.6 |
Embodied Carbon, kg CO2/kg material | 2.6 | |
2.7 |
Embodied Energy, MJ/kg | 42 | |
44 |
Embodied Water, L/kg | 310 | |
320 |
Common Calculations
Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 13 to 100 | |
19 to 120 |
Resilience: Unit (Modulus of Resilience), kJ/m3 | 21 to 830 | |
57 to 1420 |
Stiffness to Weight: Axial, points | 7.2 | |
7.2 |
Stiffness to Weight: Bending, points | 18 | |
19 |
Strength to Weight: Axial, points | 7.4 to 14 | |
10 to 22 |
Strength to Weight: Bending, points | 9.6 to 15 | |
12 to 20 |
Thermal Diffusivity, mm2/s | 69 | |
41 |
Thermal Shock Resistance, points | 8.1 to 15 | |
11 to 24 |
Alloy Composition
Copper (Cu), % | 94 to 96 | |
84 to 87 |
Iron (Fe), % | 0 to 0.050 | |
0 to 0.050 |
Lead (Pb), % | 0 to 0.030 | |
0 to 0.050 |
Tin (Sn), % | 0 | |
0.4 to 1.0 |
Zinc (Zn), % | 3.7 to 6.0 | |
11.4 to 15.6 |
Residuals, % | 0 | |
0 to 0.5 |