1.1This specification establishes the requirements for seamless copper and copper-alloy rectangular tube intended for use as transmission lines in electronic equipment. Five types of material are specified having the following nominal compositions:2

Copper or Copper Alloy UNS2 No.	Previously Used Designation	Nominal Composition, %
Copper or Copper Alloy UNS2 No.	Previously Used Designation	Copper	Zinc	Phosphorus

C10100	Copper, Type OFE^A	99.99^B	...	...
C10200	Copper, Type OF^A	99.95^B	...	...
C10300	Copper, Type OFXLP^A	99.95^B	...	0.003
C12000	Copper, Type DLP^A	99.90^B	...	0.008
C22000	Commercial bronze, 90 %	90	10	...

(A)Types OF, OFE, OFXLP, and DLP are described in Classification B224.

(B)Minimum copper percentage.

1.2The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units which are provided for information only and are not considered standard.

1.3The following safety hazard caveat pertains only to the test method(s) described in this specification.

1.3.1This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.4This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.