Oxygen-Free Copper Tu2 (Grade C1020) Steel Coils: Cold Forming Excellence for High-Voltage Wiring Harnesses

Product Description

Product Description

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

Detailed Photos

 

Certifications

Packaging & Shipping

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.

 

Company Profile

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.

Our Advantages

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.
 

FAQ

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.