a. Common grades: T1, T2, T3, TU1, TU2
b. Features: Conductive
c. Common uses: Electrical switches, motor coils, electronic parts, air conditioning pipes, soldering gun tips
2. Brass: Contains zinc
a. Common grades: H59, H62, H65, H68, HPb59-1 (free-cutting brass)
b. Features: High strength, wear resistance, resistance to water vapor corrosion
c. Common uses: Building hardware, heat exchanger tubes, pumps, power cylinders and bushings, military supplies
3. White copper: Contains nickel
a. Common grades: B19, B25, BFe10-1-1, BZn15-20, BA13-3
b. Features: Stable physical properties at room temperature
c. Common uses: medical equipment, precision instruments, thermocouples, watch parts, glasses frames
4. Bronze:
a. Definition:
Old name: tin bronze, such as ancient bells, tripods, and wine vessels
New definition: A general term other than purple, yellow, and white copper
b. Name:
Chromium bronze: QCr 0.5, QCr 0.6-0.4-0.05
Tin bronze: QSn 4-3, QSn 6.5-0.4, QSn 7-0.2
Aluminum bronze: QAl 5, QAl 9-2, QAl 10-4-4
Beryllium bronze: QSi 3-1, QSi 3.5-3-1.5
Manganese bronze: QMn 1.5, QMn 5
Cadmium bronze: QCd 1, etc.
