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.
c. Different formulas are available according to practical physical and chemical indicators, such as hardness, strength, elasticity, high temperature resistance, electrical conductivity, thermal conductivity and other engineering comprehensive indexes.
d. Application:
Example: Tin phosphor bronze: good elasticity, used as spring sheet for lamps and switches.
Resistance welding electrode materials (roller welding machine, butt welding machine, touch welding machine, riveting welding machine) chromium zirconium copper, beryllium cobalt copper.
The scope of application is extremely wide and diverse.
More and more non-mining enterprises are entering the mineral resources market, making the resource pattern full of variables, especially the prices of mineral products.
