Copper Busbar and Electrical Flat Bar

Copper busbar grade and conductivity

Copper busbar and electrical flat bar must be specified by copper grade, product standard, temper, dimensions and electrical requirements. ETP, oxygen-free, deoxidized and silver-bearing copper grades have different chemistry, conductivity, softening and fabrication characteristics. A generic copper-bar description does not confirm hydrogen resistance, elevated-temperature behavior or suitability for a switchgear design.

Dimensions, finish and inspection

Provide thickness, width, length, dimensional tolerance, corner or edge profile, straightness, flatness, temper and surface finish. State the accepted copper grade and standard, minimum conductivity and test basis, quantity, cut lengths, hole or machining drawing if required, tinning or other coating, marking and certificate type. For current-carrying components, include the design specification, connection method, operating temperature and any bend or forming requirements for supplier review.

Technical reference data

Copper tire	GOST	TU	Mark	Cut
Pressed	434−78	1844−195 430−107−99; 1844−086−195 363−2000	M1; M2	16x220
Semi-hard	434−78	1844−124−195 430−2005	М1	all dimensions according to GOST
PPP with increased surface finish	434−78	1844−117−195 430−2007	М1	all sizes according to GOST

Chemical composition	Thickness	Width	Mark	Varieties	Specific resistance at 20 ° C
GOST 859−78	4 -30 mm	16 -120 mm.	not less than M1	CMM soft MMT hard PMT rigid of oxygen-free copper	Up to 0,1 724−106Ohm-m)

Standard	Mark	Variety	Note
DIN-1787	Cu-OF, Cu-OF1, Cu-OFE	Oxygen-free copper bars	High ductility and resistance to hydrogen embrittlement
EN-13 601	Cu-ETP, Cu-ETP1, Cu-FRHC	Flexible tires made of oxygen-containing grades	Protection against hydrogen embrittlement is required.
EN-13 601	OF-OK	Made of deoxidised, oxygen-free or silver added deoxidised copper	Increased softening point.

The preserved grade and technical tables below are reference data. The ordered copper grade, conductivity, dimensions and lot certificate control acceptance.

Information needed for a quote

Send the copper busbar grade, standard, thickness, width, length, temper, conductivity, finish, quantity, certificate needs and U.S. delivery ZIP code.

Stock, production route, origin, minimum quantity, compliance, certification, price and final delivery are confirmed during quotation. Product descriptions and reference data are not stock or suitability guarantees.

Related products and contact

• copper rolled products
• C18150 copper alloy products
• contact Evek LLC

Request a U.S. quote

Evek LLC serves buyers throughout the United States. Typical delivery is 2–3 weeks, subject to the exact material, specification, dimensions, quantity and availability. Send your requirement to Evek LLC with the U.S. delivery ZIP code.