T1 / T2 Pure Copper Sheet – 99.9% Cu, 100% IACS | Factory Direct
2. Product Grades and Standards
| Grade | International Equivalent | Copper Content | Key Features | Applicable Standard |
|---|---|---|---|---|
| T1 | C11000 | ≥99.95% | High purity, high conductivity, electrical conductivity ≥100% IACS | GB/T 5231-2012 |
| T2 | C11000 | ≥99.90% | Economical and versatile, excellent overall performance | GB/T 2040 |
| TU1 | — | ≥99.97% | Oxygen-free copper, no risk of hydrogen embrittlement | — |
Selection Tips: For high-end electronics, semiconductors, vacuum devices, and other scenarios where purity and conductivity are critical, T1 or TU1 is recommended; for general electrical components, structural parts, or decorative uses, T2 is already sufficient and more cost-effective.
3. Core Performance Parameters
Physical Properties
| Parameter | T1 | T2 | Notes |
|---|---|---|---|
| Copper Content (Cu) | ≥99.95% | ≥99.90% | T1 has higher purity |
| Density | 8.89 g/cm³ | 8.89 g/cm³ | About 5 times that of magnesium, roughly 15% heavier than regular steel |
| Melting Point | 1083°C | 1083°C | Pure copper has a stable melting point |
| Electrical Conductivity (20°C) | ≥100% IACS | ≥97% IACS | Second only to silver |
| Thermal Conductivity (20°C) | ~398 W/(m·K) | ~388 W/(m·K) | Excellent heat conduction |
| Coefficient of Linear Expansion | ~17.7×10¹&sup0;⁻¹/K | ~17.64×10¹&sup0;⁻¹/K |
Mechanical Properties (Soft State)
| Parameter | T1 | T2 |
|---|---|---|
| Tensile Strength | ≥200 MPa | ≥195 MPa |
| Elongation | ≥35% | ≥30% |
| Vickers Hardness (HV) | 40~55 | ≥40 |
4. Core Advantages
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High Purity Conductivity
Extremely high copper content (T1≥99.95%, T2≥99.90%), with electrical conductivity reaching 97%~101% IACS or higher, resulting in very low energy transmission loss and significant energy savings in high-current scenarios.
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Excellent Thermal Conductivity
Its thermal conductivity is second only to silver among common metals, making it an ideal material for making heat sinks, heat exchangers, and thermal management components.
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Outstanding Workability
Pure copper has excellent plasticity, making it easy to cut, bend, stamp, deep-draw, forge, and perform other hot or cold processing, suitable for complex forming needs.
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Good Welding and Surface Treatment Properties
Various welding methods can be used, including brazing, fusion welding, and resistance welding. Surfaces are clean with strong electroplating adhesion, suitable for tin, nickel, gold plating, and other treatments.
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Corrosion Resistance to Atmosphere
Stable in dry and most industrial atmospheric conditions, with the surface forming a protective oxide film.
5. Application Areas
Busbars, conductive clamps, power transmission and distribution components, circuit breaker parts, transformer windings, switch contacts
Integrated circuit lead frames, heat-dissipation substrates, RF connectors, shielding covers, lead frames
Battery connector plates, busbars, inverter conductive parts, charging equipment components
Heat sinks, heat exchanger tube sheets, liquid cooling gaskets, cooling modules
EDM electrodes, bearing bushings, crystallizer liners, mold materials