T2 copper plate is a highly versatile, commercially pure copper product widely used in China and international markets. Thanks to its excellent electrical and thermal conductivity, corrosion resistance, and formability, T2 copper is indispensable in electrical engineering, electronics, manufacturing, and decorative industries. However, depending on geographic region and technical requirements, this material may be supplied under different standards. This article presents an in-depth analysis of the main standards governing T2 copper plate and explores how to choose the correct specification for your application.
1. Overview of Common Standards for T2 Copper Plate
Below are the most recognized standards that define the composition, mechanical properties, and tolerances of T2 copper and its international equivalents:
| Standard | Full Name | Region | Application Focus |
|---|---|---|---|
| GB/T 2059 | Copper and Copper Alloy Sheet and Strip | China | General-purpose copper sheet in domestic industry |
| GB/T 5231 | Wrought Copper and Copper Alloy Designation and Composition | China | Defines chemical composition for T2 (≥99.90% Cu) |
| ASTM B152 | Copper Sheet, Strip, Plate, and Rolled Bar | USA | Industrial, aerospace, power, and export applications |
| JIS H3100 | Copper and Copper Alloy Sheets and Strips | Japan | High-spec electronics, automotive, Japanese OEMs |
| EN 1652 | Copper and Copper Alloys – Sheet and Strip for General Use | EU | CE-compliant construction, electronics, appliances |
| ISO 1634-1 | Wrought Copper Alloy Sheet and Strip – General Requirements | International | Global trade and harmonized multi-standard projects |
2. Technical Comparison of Major Standards
| Feature | GB/T 2059 (T2) | ASTM B152 (C11000) | JIS H3100 (C1100) | EN 1652 |
| Cu Purity (%) | ≥99.90 | ≥99.90 | ≥99.90 | ≥99.90 |
| Chemical Standard Ref. | GB/T 5231 | UNS C11000 | JIS C1100 | Cu-DHP / Cu-ETP |
| Tensile Strength (MPa) | 195–275 (by temper) | ~205–250 (H04) | ~200–260 (depending) | 200–260 (R220-R320) |
| Elongation (%) | ≥25 (annealed) | ≥30 (O temper) | ≥25 | ≥30 |
| Surface Finish | Mill, polished optional | Clean, bright or polished | Mirror / mill | Clean, bright |
| Thickness Range | 0.1–50 mm | 0.127–50.8 mm | 0.1–30 mm | 0.1–20 mm |
| Tolerance Precision | Moderate | Strict | High (electronics) | Very strict |
Note: Values may vary based on temper, testing direction, and manufacturer.
3. T2, C11000, and C1100: Global Material Equivalents
Although named differently across countries, T2, C11000, and C1100 all refer to high-purity electrolytic copper with very close performance profiles.
| Grade | Standard | Region | Cu Purity (%) | Notes |
| T2 | GB/T 5231 | China | ≥99.90 | Standard Chinese electrolytic copper |
| C11000 | ASTM B152 | USA | ≥99.90 | Also called ETP (Electrolytic Tough Pitch) copper |
| C1100 | JIS H3100 | Japan | ≥99.90 | Common in Japanese electronics industry |
These materials are generally interchangeable when verified by composition and mechanical tests.
4. Choosing the Right Standard for Your Project
Selecting the correct standard depends on project location, regulatory expectations, and downstream processing methods. Below are some practical recommendations:
| Application Scenario | Recommended Standard | Rationale |
| General domestic manufacturing | GB/T 2059 + GB/T 5231 | Well-accepted within China |
| Export to North America | ASTM B152 (C11000) | Aligns with US engineering codes and material databases |
| Export to Japan or Japanese-owned OEM | JIS H3100 (C1100) | Matches Japanese tolerances, inspection, and terminology |
| Projects requiring CE or RoHS | EN 1652 | Ensures compliance with EU directives and certifications |
| Global or multi-region procurement | ISO 1634-1 or ASTM B152 | ISO standard helps avoid conflict across borders |
5. Conclusion: Standardization Enables Confidence
Choosing the appropriate standard for T2 copper plate is more than a formality—it determines product acceptance, performance reliability, and long-term compatibility. By understanding the relationships and distinctions between GB, ASTM, JIS, EN, and ISO frameworks, buyers and engineers can make informed decisions that support technical compliance and supply chain efficiency.
At Shaanxi NiTiCu Metal Co., Ltd, we offer a full range of copper plate products that meet various international standards. Whether you need high-conductivity copper for electrical applications or certified material for export, we provide professional support and consistent quality.
Contact us for technical inquiries or quotations:
📧 sales@niticu.com
🌐 http://www.niticu.com
📱 +86 13335373172
