Copper sheet and strip, is copper and copper alloy rolled and processed plate or strip metal materials, with good electrical conductivity, thermal conductivity, corrosion resistance and processing performance.
Usually, the thickness of 0.2-3.0mm is called strip, thickness greater than 3.0mm is called plate.
According to the alloy composition and performance, it is generally believed that copper sheet and strip are mainly divided into four categories:
I. Purple copper type sheet and strip (pure copper)
grades such as T2, C1100 (oxygen-free copper).
Characteristics: excellent electrical / thermal conductivity (> 99% conductivity), corrosion resistance, good thermoplasticity, cold plasticity medium. Tensile strength ≥ 315MPa, elongation ≥ 30%.
Uses: wires, cables, detonators, circuit connectors, chemical evaporators, tanks, pipes, roofs, curtain walls (due to weather resistance and aesthetic).
Second, brass type plate and strip (copper-zinc alloy)
grades such as H62, H65, H68 (ordinary brass); HPb59-1 (lead brass).
Characteristics: good cutting, hot and cold pressure processing, excellent mechanical properties. Tin brass (such as HSn70-1) is resistant to seawater corrosion.
Uses: gaskets, bushings, valves, water pipes, corrosion-resistant parts, steam conduit (tin brass), battery caps, connectors (due to easy processing).
Third, the bronze class plate and strip (copper-tin / aluminum / silicon alloy)
brands such as QSn6.5-0.1 (tin-phosphorus bronze), QAl9-4 (aluminum bronze).
Characteristics: high wear resistance, friction reduction, some grades of good elasticity (such as beryllium bronze QBe2.0).
Uses: bearings, gears, worm gears (tin bronze), springs, connectors (beryllium bronze), aerospace, automotive cylinder sheet (aluminum bronze).
Fourth, white copper sheet and strip (copper-nickel alloy)
brands such as BZn15-20 (zinc white copper), BMn40-1.5 (manganese white copper).
Characteristics: corrosion resistance, medium strength, high plasticity, excellent electrical properties (such as high resistance, thermocouple characteristics).
Uses: resistors, thermocouples (manganese white copper), naval condensate tubes, corrosion-resistant structures (iron white copper), eyeglass fittings, surgical instruments (zinc white copper).
How should I choose the grade of copper sheet and strip?
We can decide according to the specific performance requirements (such as electrical conductivity, strength, corrosion resistance) and application scenarios, such as:
1, electrical industry: preferred pure copper (T2, TU1);
2, decorative and structural parts: mostly brass (H62, H80);
3, wear-resistant mechanical parts: choose bronze (such as QSn6.5-0.1, QAl9-4);
4, corrosion-resistant environments: (marine, chemical) then use White copper (B10, B30) or tin brass (HSn70-1).
Finally, let's take a look at the development trend of copper sheet and strip industry:
The hottest areas in recent years: new energy vehicles (battery connectors), 5G communications (heat sinks), semiconductors (lead frames) and other areas to promote the demand for high-precision copper sheet and strip.
We can provide high quality products, good service and competitive price. We have been committed to producing high quality copper products such as copper tubes, copper wires, copper plates, copper strips, copper rods and other copper products.
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