Main Advantages of TU2 Purple Copper Strip (Oxygen-Free Copper)
High Purity and Low Oxygen Content
The oxygen content of TU2 purple copper is controlled below 0.003%, with purity ≥ 99.95%. This reduces lattice defects and impurity interference during electronic transmission, ensuring stable signal transmission.
Excellent Electrical and Thermal Conductivity
Electrical Conductivity: Up to 101% IACS (International Annealed Copper Standard), suitable for high-current applications such as high-voltage wiring harnesses and charging gun conductors.
Thermal Conductivity: Approximately 398 W/(m·K), effectively reducing temperature rise in heat sinks and power transmission systems, improving system stability.
Good Processing Performance
Elongation: Can exceed 40%, suitable for precision wire drawing, stamping, and other cold processing, improving yield by 23% in the production of micro-connectors.
Tensile Strength: 200-230 MPa, resulting in lower breakage rates during processing.
Corrosion Resistance and Low-Temperature Adaptability
Resistant to salt spray corrosion (mass loss of only 0.02g/m² after 1000 hours), suitable for marine, chemical, and other harsh environments.
Maintains 18% elongation at -196°C, making it ideal for aerospace cryogenic fuel pipeline systems.
Application Fields: High-vacuum electronic device seals, cryogenic superconducting equipment connection components, precision instrument conductive elements.
II. Material Grade
TU2 (Japanese Standard C1020 / American Standard C10200 / European Standard CU-OF)
III. Chemical Composition:
TU2 purple copper has strict requirements in chemical composition:
Total content of copper and silver not less than 99.95%
Phosphorus content ≤ 0.002%
Total content of other impurities (bismuth, antimony, iron, nickel, lead, tin, sulfur, zinc, oxygen, etc.) ≤ 0.05%
IV. Mechanical Properties:
The mechanical properties vary depending on the heat treatment state of the material. Refer to the following table:
| Grade |
State |
Thickness /mm |
Tensile Strength (MPa) |
Elongation (%) |
Vickers Hardness HV |
| T2, T3, TU1, TU2, TP1, TP2 |
M (Soft) |
≥0.2 |
≥195 |
≥30 |
≤70 |
| Y4 (1/4 Hard) |
215~275 |
≥25 |
60~90 |
| Y2 (Half Hard) |
245~345 |
≥8 |
80~110 |
| Y (Hard) |
295~380 |
≥3 |
90~120 |
| T (Extra Hard) |
≥350 |
- |
≥110 |
1.Export sea worthy package + water proof paper
2.Safe loading and fixing Professional teams
Delivery Detail: within 7-10 working days after receiving the deposit or according to your order quantity.
Wuxi Tongno Special Steel Co., Ltd. was founded in 2013, the registered capital of 5 million yuan, for the professional production of seamless steel pipe manufacturing enterprises; after years of rapid development, Wuxi Tongno Special Steel Co., Ltd. now has three types of seamless steel pipe production line;
Wuxi Tongno Special Steel Co., Ltd. has been adhering to the 'quality first, customer first' business philosophy, to ensure that the products of high-precision, wide range of wall thicknesses, small quantities of many varieties, fast-paced characteristics of the production, sales in the domestic advanced level, especially in the small-diameter medium-thick-walled and large-calibre thin-walled alloy seamless steel pipe production at the domestic advanced level. Products at home and abroad enjoy a reputation for a variety of project construction, play their own characteristics of manufacturing energy.
1. Exceptional Service: We guarantee a response to all inquiries within 12 hours.
2. Certifications: Proudly holding ISO 9001, CE, and SGS certifications.
3. Cost - Effective Quality: Benefit from competitive prices and top - notch quality, as our products are directly sourced from our own factory.
4. Robust Production Capacity: With a monthly output of 20,000 tons, we ensure seamless production.
5. Flexible Payment Terms: We accept various payment methods, including T/T and L/C.
6. Swift Delivery & Standard Export Packaging: Expect quick delivery and products packaged in line with international export standards.
7. Factory - Direct Advantage: Our own factory enables us to offer competitive prices without compromising on quality.
8. Third - Party Testing: We welcome any third - party testing to verify the quality of our products.
9. Expert Team Support: Backed by a professional sales team and a reliable factory.
10.Dedicated to Customization: Your individual specifications are not just accepted-they're the cornerstone of our service. We're committed to delivering on every customized request.
Q1: What are your primary product offerings?
A1: We are a leading manufacturer and supplier of high-quality steel products, specializing in:
Stainless Steel & Carbon Steel: Sheets/plates, coils, and pipes/tubes (both seamless and welded)
Structural Components: Various bar profiles (round, square, hexagonal, flat, angle), C-channels, and H/I-beams
Custom Fabrications: Tailored solutions to meet specific project requirements
Q2: What quality assurance measures do you have in place?
A2: We maintain stringent quality control through:
Comprehensive Mill Test Certificates provided with all shipments
Optional third-party inspection services (SGS, BV, etc.)
ISO-certified manufacturing processes
Rigorous in-house testing and quality checks
Q3: What are your standard packaging terms?
A3: Our standard packaging includes:
Bundled or coiled goods secured with steel rods/straps
Custom packaging solutions available per customer specifications
Export-grade packaging to ensure optimal protection during transit
Q4: What is your typical delivery timeline?
A4: We offer flexible delivery options:
Stock items: Ready for shipment within 3 business days after deposit confirmation
Made-to-order items: Production typically completed within 7-15 working days post-deposit
Expedited options available for urgent requirements
Q5: What competitive advantages does your company offer?
A5: We differentiate ourselves through:
A team of highly skilled professionals and technical experts
Industry-leading pricing without compromising quality
Unparalleled after-sales support and customer service
Extensive inventory and reliable supply chain management
Q6: Do you provide product samples?
A6: Yes, we're pleased to offer:
Complimentary small samples from existing inventory
Customer only responsible for shipping costs
Custom samples available for specific project needs
Q7: What are your payment terms?
A7: Our standard payment structure:
30% advance payment via T/T to initiate production/order
Remaining 70% balance due prior to shipment
Full documentation including product photos and packaging details provided before final payment
Why Choose Us?
√ Quality Assurance: Rigorous testing and certification
√Competitive Pricing: Cost-effective solutions without compromise
√ Reliable Delivery: On-time fulfillment guaranteed
√ Custom Solutions: Tailored to your exact specifications
√ Expert Support: Technical guidance at every stage
For further inquiries or specific requirements, please contact our sales team. We're committed to providing exceptional service and top-quality steel products for your projects.
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