TP1 Copper

Designation and Standards

International Common Grades:

• China: TP1 (GB/T 5231-2012)

• America: C12100 (ASTM B88)

• Japan: C1201 (JIS H3300)

• European Union: CU-ETP/CW023A (EN 1172)

• International Standard: CU-DLP (ISO 1337)

Product Features

• Deoxidized Copper Characteristics: Contains trace phosphorus (0.005-0.012%), excellent deoxidation ability, and significantly better welding performance compared to common copper.

• High Conductivity/Thermal Conductivity: Conductivity ≥ 90% IACS, Thermal conductivity ≥ 350 W/(m·K), suitable for high-performance electrical and thermal conductivity applications.

• Corrosion Resistance: Excellent resistance to high-temperature oxidation and steam corrosion, suitable for chemical pipelines, condensers, and other humid/high-temperature environments.

• Workability:

  Excellent cold working properties, can be made into thin-walled tubes or complex shapes.

  For hot working, temperature control is required (annealing temperature: 500-700°C) to avoid grain coarsening.

• Hydrogen Embrittlement Resistance: Phosphorus elements inhibit hydrogen penetration, reducing the risk of "hydrogen embrittlement" and enabling processing in reducing atmospheres.

Common Product Forms and Dimensions

Chemical Composition (GB/T 5231-2012)

Note: The phosphorus content is low, offering superior conductivity compared to TP2, but must be strictly controlled to below 0.012%.

Physical Properties

Mechanical Properties

Core Advantages

• Excellent Welding Performance: The phosphorus deoxidation process reduces oxidation risks, supporting high-precision processes such as flame welding and induction welding.

• High Purity and Environmental Friendliness: Low impurity content, recyclable, and compliant with environmental requirements.

• Balanced Performance: Combines excellent conductivity, thermal conductivity, and corrosion resistance, adaptable to multiple field requirements.

Product Applications

• Refrigeration Industry: Air conditioning condenser tubes, refrigerator evaporators.

• Chemical Equipment: Corrosion-resistant pipelines, reactor linings.

• Electrical Electronics: Cable conductors, heat sink substrates.

• Architectural Decoration: Art sculptures, weather-resistant roofing materials.

Processing Notes

• Welding Process: Prefer phosphorus-containing solder (e.g., BCuP series), preheat to 200-300°C before welding, and control sources of oxygen and hydrogen.

• Annealing Control: Soft material annealing temperature ≤ 700°C, avoid repeated annealing to prevent grain coarsening.

• Surface Treatment: After acid pickling, thoroughly rinse to prevent residual phosphides from causing corrosion.

Frequently Asked Questions

Q: What is the main difference between TP1 and TP2?

A: TP1 has lower phosphorus content (0.005-0.012% vs. 0.015-0.040% in TP2), offering higher conductivity, but its welding performance is slightly inferior to TP2.

Q: Is TP1 suitable for drinking water pipelines?

A: It must comply with GB/T 18033-2017 standards and pass migration testing for lead, arsenic, and other elements.

Q: How should TP1 be treated after cold working?

A: After cold work hardening, it should be annealed to restore ductility, with a recommended temperature of 500-600°C.

Standards Reference

• Chemical Composition: GB/T 5231-2012

• Tube/Bar: GB/T 1527-2017, GB/T 1528-2019

• Welding Standards: GB/T 985.1-2008

Disclaimer: The technical parameters in this manual are based on national standards and industry common data. Specific applications should be considered in conjunction with operational conditions and third-party testing reports. For complete technical documentation, please contact the supplier or refer to the relevant standard documents.