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

Copper or Nominal Composition, % Copper Alloy Previously Phos- UNS 2 No. Used Designation Copper Zinc phorus C10200 Copper, Type OF A 100 ... ... C10300 ... 99.99 ... 0.003 C12000 Copper, Type DLP A 100 ... ... C22000 Commercial 90 10 ... bronze, 90% A Types OF and DLP are described in Classification B 224.

1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.