Features and Scope:
Is wider application of leaded brass, good machinability, good mechanical properties, can withstand cold, hot pressure processing, easy fiber welding and soldering, general corrosion has good stability.
● Chemical Composition:
Copper Cu: 57.0 ~ 60.0
Zinc Zn: margin
Lead Pb: 0.8 ~ 1.9
Lead Pb: 0.8 ~ 1.9
Boron P: ≤0.02
Al Al: ≤0.2
Iron Fe: ≤0.5
Beryllium Sb: ≤0.01
Bi Bi: ≤0.003
Note: ≤1.0 (impurity)
● Mechanical Properties:
Tensile strength σb (MPa): ≥390
Elongation δ10 (%): ≥12
Elongation δ5 (%): ≥14
Note: The vertical bars at room temperature tensile properties
Sample size: diameter or right edge distance> 20 ~ 40
● Heat treatment: thermal processing temperature of 640 ~ 780 ℃; annealing temperature of 600 ~ 650 ℃; eliminate the stress of low temperature annealing temperature of 285 ℃