Oxygen Free Copper Rod TU1/TU2 | OFHC Copper Rod, Custom Size Supplier

Need a copper rod with high electrical conductivity, low oxygen content and reliable machining performance?

Our TU1/TU2 Oxygen Free Copper Rod provides a high-purity copper solution for electrical conductors, electronic components, vacuum applications, thermal equipment and precision industrial parts. Also known as Oxygen Free Copper Rod or OFHC Copper Rod, TU1 and TU2 are widely selected when low oxygen content and excellent conductivity are important.

As a custom size supplier, we provide tailor-made oxygen free copper rod services. We cut, machine and fabricate OFHC copper rod according to your required diameter and length. Small prototype orders and bulk production orders are both supported. Sufficient stock and in-house processing help us achieve fast delivery. Every batch comes with MTR material test reports.

Oxygen free copper rod, also known as OFHC copper rod, is a high‑purity copper bar manufactured with extremely low oxygen content. TU1 oxygen free copper rod and TU2 oxygen free copper rod are the most common grades for industrial production.

Unlike ordinary copper rod that contains higher oxygen residuals, oxygen free copper rod controls oxygen at a very low level during smelting. This unique property helps OFHC copper rod avoid hydrogen embrittlement when exposed to high‑temperature brazing, welding or vacuum working environments.

Oxygen free copper rod delivers excellent electrical and thermal conductivity, superior ductility and stable mechanical performance. The material can be easily machined, forged, stamped and sealed for vacuum and electronic assemblies. As a trusted oxygen free copper rod supplier, HSMetal produces custom‑size oxygen free copper rod including TU1 OFHC copper rod and TU2 OFHC copper rod for electrical, semiconductor, vacuum, new energy and cable industries.

TU1 oxygen free copper rod features higher purity and lower oxygen content for ultra‑strict applications, while TU2 oxygen free copper rod offers balanced performance and cost advantages for general high‑current conductive parts. We provide both standard and custom dimensions for oxygen free copper rod, with full material test certification for global manufacturers, distributors and OEM buyers.

As a professional oxygen free copper rod supplier, we manufacture round oxygen free copper rod in straight‑length and coiled formats. Square bar, flat bar and special‑profile OFHC copper rod can be supplied upon custom request.

Produced in accordance with GB/T 5231‑2012, TU1 oxygen free copper rod is equivalent to ASTM C10100 OFHC copper, and TU2 oxygen free copper rod conforms to ASTM C10200 standards. Every batch of straight‑length and coiled oxygen free copper rod undergoes strict inspection for oxygen content, copper purity and electrical conductivity prior to shipment.

• TU1 Oxygen Free Copper Rod: Copper ≥99.99%, oxygen ≤0.001%. Optimized for vacuum devices, semiconductor sealing, microwave assemblies and high‑end electronic components with stringent performance requirements.

• TU2 Oxygen Free Copper Rod: Copper ≥99.97%, oxygen ≤0.003%. Cost‑effective grade widely used for busbars, connectors, cable production, transformer components and general high‑current conductive assemblies.

Excellent Electrical and Thermal Conductivity: Our oxygen free copper rod achieves ≥101% IACS conductivity, lowering energy loss and delivering stable heat dissipation for conductive and thermal‑management components.

Resistance to Hydrogen Embrittlement: The ultra‑low‑oxygen composition enables TU1 and TU2 OFHC copper rod to resist cracking during high‑temperature brazing, welding and vacuum service. Straight‑length and coiled oxygen free copper rod maintain stable performance after thermal processing.

Superb Ductility and Processability: OFHC copper rod performs well during cold drawing, forging, turning and stamping. Coiled oxygen free copper rod fits continuous‑operation and automatic feeding production lines for cable and component manufacturing. Available in annealed soft, half‑hard and hard tempers.

Multiple Formats & Flexible Customization: Select straight cut‑to‑length bars or coiled oxygen free copper rod. Square bar, flat bar and special‑profile OFHC copper rod can also be manufactured per technical drawings.

Complete Traceability & Export‑Ready Documentation: Each oxygen free copper rod shipment includes MTR certification and batch test records to satisfy import requirements for global industrial purchasers.

Buyers may also compare oxygen free copper with C11000 ETP copper or T2 copper.

If your process is sensitive to oxygen content, brazing, welding, high-temperature processing or other material conditions, the correct copper grade should be confirmed before ordering.

Backed by complete‑set continuous casting and rolling production lines, HSMetal maintains robust manufacturing capacity for TU1 and TU2 oxygen free copper rod and OFHC copper rod. Our workshop is equipped with large‑scale upward continuous casting units, automated rolling equipment, and coiling systems, covering core production workflows from molten copper casting, continuous drawing to final coiled or straight‑length finished products.

Our integrated production setup enables strict process control throughout every manufacturing stage. It guarantees stable ultra‑low oxygen content, consistent dimensional accuracy and uniform material performance for oxygen free copper rod. In‑line monitoring equipment tracks key technical indicators during production. Every batch of OFHC copper rod undergoes rigorous inspection before delivery, supporting both mass‑volume orders and custom‑size requirements for global clients across vacuum, electronics, cable and new‑energy industries.

Oxygen Free Copper Rod Production Line

 

Interior view of oxygen‑free copper rod manufacturing plant, production line overview

Automated coiling machine producing coiled OFHC oxygen free copper rod in factory

Large‑scale continuous casting equipment for TU1 TU2 OFHC copper rod in factory

Casting and drawing unit of oxygen free copper rod production line inside HSMeal plant

Wide‑angle factory workshop view, finished coiled TU1 TU2 oxygen free copper rod stock

Upward continuous casting core machine for TU1 TU2 oxygen free copper rod

Industrial Applications for TU1/TU2 Oxygen Free Copper Rod

 

Our oxygen free copper rod supplier serves worldwide clients, and our custom size OFHC copper rod covers multiple high‑end industrial fields:

• Vacuum industry: Our TU1 oxygen free copper rod acts as core material for vacuum interrupters, vacuum tube electrodes and vacuum sealing components.
• Electronics & semiconductors: High‑purity OFHC copper rod for glass‑to‑metal sealing, transistor bases, microwave waveguide parts.
• New‑energy industry: TU2 oxygen free copper rod for new‑energy vehicle connectors, conductive terminals and bus bar blanks.
• Power equipment: Custom size oxygen free copper rod for transformer assemblies, high‑current conductive bars and welding electrodes.
• Precision machining: OFHC copper rod blanks for cold heading, stamping and high‑performance heat‑transfer components.

 

Commercial and Delivery Terms

Item	Details
Product	TU1 / TU2 Oxygen Free Copper Rod, OFHC Copper Rod
Alloy Grade	TU1, TU2 (ASTM C10100 / C10200 equivalent)
MOQ	Small trial orders and bulk mass production available
Tolerance	Diameter tolerance: ±0.02 mm ~ ±0.1 mm, customizable
Available Form	Straight-length rod, coiled rod, square bar, flat bar & special profiles
Payment Terms	T/T, L/C, negotiable
Lead Time	7–20 working days, subject to order quantity & custom specifications
Packing	Wooden cases / steel pallets, moisture-proof packaging for export
Shipping Term	FOB(Shanghai,Qingdao or any of China ports), CFR, CIF
Inspection	In-house batch inspection; third-party inspection available upon request
Sample	Free samples available, freight cost borne by buyer

 

Need Oxygen Free Copper Rod TU1/TU2?

 

Send us your spec and we'll show you exactly what we can match - grade, size, conductivity, and lead time for your oxygen free copper rod order. One inquiry, and you'll know whether we're the right fit.

 

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 Explore Our Oxygen Free Copper Rod Products → C10100 Copper Bar | C10200 OF Copper Bar | C11000 ETP Copper | Copper Alloy Selection Guide 

Q1: What is TU1/TU2 oxygen free copper rod?
A: TU1 and TU2 are high-purity oxygen-free copper rods under GB/T 5231, equivalent to UNS C10200 (OFHC). TU1 has ≥99.97% copper with ≤0.002% oxygen; TU2 has ≥99.95% copper with ≤0.003% oxygen. Both offer ≥100% IACS conductivity and resist hydrogen embrittlement.

Q2: What is the difference between TU1 and TU2?
A: TU1 has higher purity (≥99.97% Cu, ≤0.002% O) and slightly higher conductivity (≥101% IACS). TU2 has ≥99.95% Cu and ≤0.003% O with ≥100% IACS. Choose TU1 for the most demanding vacuum and electronic applications; TU2 for general high-conductivity use.

Q3: How much is oxygen-free copper?
A: Price depends on grade (TU1/TU2), size, form (rod, wire, tube), and market conditions. Send us your specification and we'll provide a current quote with lead time.

Q4: How much better is OFC than CCA?
A: OFC is about twice as conductive as CCA (copper-clad aluminum). It also offers better corrosion resistance, heat dissipation, and current capacity. CCA is lighter and cheaper, but better suited to lower-power applications.

Q5: What is the equivalent of TU1/TU2 in UNS?
A: Both TU1 and TU2 correspond to UNS C10200 (OFHC copper) and ASTM B187 for copper rod and bar.

Q6: What is oxygen free copper rod?
A: Oxygen free copper rod is high-purity copper rod with controlled oxygen content, commonly used for electrical conductors, wire drawing and cable-related applications.

Q7: Is pure copper better than oxygen-free copper?
A: Not always. Pure copper (like ETP) contains around 0.04% oxygen, which is fine for general wiring and actually makes it stronger. Oxygen-free copper removes that oxygen, making it better for vacuum, high-temperature, or high-precision applications.

Q8: Are electric cables 100% copper?
A: The conductor is usually copper, but the full cable also includes insulation, shielding, and jacketing. When a cable is labeled "oxygen-free copper," it means the conductor itself is made of OFC.

Q9: Oxygen-free copper vs pure copper?
A: Pure copper contains some residual oxygen (~0.04%); oxygen-free copper removes it almost entirely (<0.001%). This gives OFC higher purity and better performance in demanding applications, while pure copper remains suitable and more economical for everyday wiring.

Q10: Oxygen-free copper tubing
A: Oxygen-free copper tubing is used in power generation, medical devices, wave guides, high-voltage bushings, and high-vacuum equipment. It can be custom-made in different lengths, wall thicknesses, and tempers (hard or soft annealed).

Q11: What is the electrical conductivity of TU1/TU2 copper rod?
A: TU1 ≥101% IACS and TU2 ≥100% IACS - among the highest of any commercial copper product.

Q12: Where to buy TU1/TU2 oxygen free copper rod?
A: HSMetal is a direct China supplier of TU1/TU2 OFHC copper rod with in-house production and custom size capability. Buying direct means mill pricing, full traceability, custom sizes, and export documentation handled for you.

Q13: What is the oxygen content of TU1 and TU2?
A: TU1 ≤0.002% oxygen; TU2 ≤0.003% oxygen - both far below standard copper, which is why they resist hydrogen embrittlement.

Q14: Is your OFHC copper rod high conductivity?
A: Yes. Our high conductivity copper rod is produced with low oxygen content to support stable electrical performance, typically ≥100% IACS depending on grade.

Q15: Is TU1 equivalent to C10100?
A: TU1 and C10100 are often compared as oxygen free copper grades, but they should not be treated as automatically interchangeable. The applicable standard and material requirements should be confirmed before substitution.

Q16: What applications use TU1/TU2 oxygen free copper rod?
A: TU1/TU2 are mainly used for Vacuum devices, electron tubes, semiconductor equipment, high-conductivity busbars, switchgear, heat sinks, welding electrodes, and high-end audio conductors.

Q17: Can oxygen free copper rod be used for wire drawing and cable manufacturing?
A: Yes. TU1/TU2 oxygen free copper rod can be considered for wire drawing and cable applications when the grade, surface condition, dimensions and other requirements are suitable.

Q18: Does oxygen-free copper make a difference?
A: Yes - especially in high-temperature, vacuum, and high-conductivity applications. Oxygen-free copper (OFHC, such as TU1/TU2 / UNS C10200) contains ≤0.002–0.003% oxygen, which prevents hydrogen embrittlement, eliminates porosity, and delivers ≥100–101% IACS conductivity. In ordinary room-temperature wiring the difference may be small, but in vacuum devices, electron tubes, and hydrogen atmospheres it is the difference between reliable performance and premature failure.

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