Oxygen Free Copper (OFC) Round Bar refers to a type of copper bar that has been processed to minimize the presence of oxygen and other impurities. This results in a high-purity copper material with excellent electrical conductivity and thermal properties.
Oxygen is one of the most common impurities in copper, and its presence can negatively affect the metal's electrical and thermal conductivity. By removing or reducing the oxygen content, oxygen-free copper exhibits improved conductivity and is highly suitable for applications that require high electrical and thermal performance.
The round bar shape indicates that the copper is formed into a cylindrical rod with a circular cross-section. Round bars are commonly used in various industries, including electrical, electronics, automotive, and telecommunications, where high-performance copper is required for applications such as electrical conductors, busbars, connectors, and heat exchangers.
Oxygen-Free Copper Bars are manufactured through oxygen-free high-conductivity (OFHC) copper refining. This involves melting high-quality copper cathodes in a controlled environment, usually using a non-reactive gas atmosphere, to prevent oxygen reabsorption during the cooling process. The resulting copper is formed into round bar shapes through extrusion, casting, or other forming methods.
Oxygen-free copper round bars are typically available in various sizes and can be further
processed to meet specific dimensional requirements or surface finishes.
These specifications frequently denote varying levels of copper purity, such as OFC-101, OFC-102, or
OFHC-101, based on specific purity criteria.
Overall, oxygen-free copper round bars offer superior electrical and thermal conductivity properties, making them a preferred choice for applications where high-performance copper is necessary.
You must go online to Max Steels and order Oxygen Copper Round Bars for industrial use.
Specifications : ASTM B187 / ASME SB187, C10100, C10200, C10300
Diameter : 3 mm to 115 mm.
Round Bar : 3/16" - 15" Diameter.
Rectangles / Flat Round Bar : 1/8" - 2" thick through 1/2" - 8" wide.
Square Round Bar : 1/4" - 2" Square.
Length : Up to 6 m
Materials : Copper content of 99.9%
Temper : O(M), 1/4H(Y4), 1/2H(Y2), H(Y), HH(T).
Electrical Conductivity : at 20℃: C1100/C1020 >97%; C1220 >80%.
ASTM B187 / SB187 - Standard Specification for Copper, Bus Bar, Round Bar, and Shapes and General Purpose Round Bar, Bar, and Shapes.
DIN 2.0040 - Oxygen free (OF), pure Copper processed without desoxydation additions. The electrical conductivity at 20°C is 101% IACS. Excellent resistance to environmental atmosphere, sea water and non-oxidizing acids. Poor resistance, however, to oxidizing acids and vapors containing sulfur, halogen or ammoniac.
C10100 - Oxygen-Free Electronic Copper, also known as OFE, is a 99.99% pure copper with 0.0005% oxygen content. C101 achieves a minimum 101% IACS conductivity rating. This copper is finished to a final form in a carefully regulated, oxygen-free environment..
C10200 - High Conductivity (OFHC) Copper characteristics are high ductility, high electrical and thermal conductivity, high impact strength, good creep resistance, ease of welding, and low volatility under high vacuum.
| Element | ||||||||||
| Cu(1,2,3) | Pb | Zn | Fe | P | Ag | As | O | Sb | Te | |
| (1) This is a high conductivity copper which has, in tde annealed condition a
minimum conductivity of 100% IACS except for Alloy C10100 which has a minimum conductivity of 101%
IACS. (2) Cu is determined by tde difference between tde impurity total and 100 %. For alloy C10100 tde Cu value is exclusive of Ag. (3) The following additional impurity maximum limits shall apply: Bi 1ppm (0.0001%); Cd 1ppm (0.0001%); Mn 0.5ppm (0.00005%); Ni 10ppm (0.0010%); Se 3ppm (0.0003%); S 15ppm (0.0015%); Sn 2ppm (0.0002). |
||||||||||
| Min (%) | 99.99 | |||||||||
| Max (%) | 0.0005 | 0.0001 | 0.0010 | 0.0003 | 0.0025 | 0.0005 | 0.0005 | 0.0004 | 0.0002 | |
Good electricity
Good corrosion-resistance
Being joined well by welding
Climate-hardiness
Good elongation
Heat conduction
Being extruded and processed well
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