This series of products consists of alloy powders made from Cu and Zn, which are commonly composed of CuZn10, CuZn20, and CuZn30, depending on the composition and production processes. The high solubility of Zn in Cu forms an α solid solution. The grain growth at the final stage of solid-state sintering of the single-phase powder mainly depends on the reaction between pores and grain boundaries. A certain shape and quantity of pores can pin the grain boundaries, making them less mobile and inhibiting grain growth.
The higher surface energy of the powder and the distortion energy of the pressed powder particles serve as intrinsic driving forces for promoting powder compact sintering, achieving a thermodynamically lower free energy and a more stable state.
The ABR series products provide lead-free, environmentally friendly brass powder, which is primarily used in the powder metallurgy structural parts, friction brake materials, and metal injection molding (MIM) industries.
Grade |
Composition (%) |
Apparent Density (g/cm³) |
Flow Rate (s/50g) |
Sieve Analysis(%) |
||||
+60 | -60/+100 | -100/+150 | -200/+325 | -325 | ||||
ABR-10 |
Cu90Zn10 | 3.0-3.4 |
25.0 | TR |
6.0 | 10.0 | 25.0 | 45 |
ABR-20 | Cu80Zn20 | 30.0 |
7.0 | 12.0 | 26.0 | 40 | ||
ABR-30 | Cu70Zn30 | 2.6-3.2 | 8.0 | 10.0 | 25.0 | 43 |
Sintered Properties (Typical) Sintered for 30 minutes at 1600°F(872°C) in dry dissociated | |||
Sintered Properties | ABR-10 | ABR-20 | ABR-30 |
Sintered Density | 8.0g/cm3 |
7.8g/cm3 | 7.6g/cm3 |
Transverse Rupture Strength |
55,000psi(380MPa) | 70,000psi(483MPa) | 70,000psi(483MPa) |
Ultimate Tensile Strength |
26,000psi(180MPa) |
28,000psi(190MPa) | 30,000psi(205MPa) |
Yield Strength | 12,000psi(83MPa) | 13,000psi(90MPa) | 14,000psi(97MPa) |
Elongation | 10 | 12 | 14 |
Hardness,HRH | 75 | 77 | 79 |
Compacting Performance Determined on TRS bars pressed at 30 tsi (414N/mm2) from premix containing 3/4% Lithium Stearate. | |||
Compacting Properties | ABR-10 | ABR-20 | ABR-30 |
Green Density | 7.8g/cm3 | 7.5g/cm3 | 7.2g/cm3 |
Green Strength | 1000psi(6.9N/MM2) | 1250psi(8.6N/MM2) | 1100psi(7.6N/MM2) |