15.1 For purposes of determining compliance with the specified limits for requirements of chemical composition, hardness, and electrical resistivity, an observed value or a calculated value shall be rounded as indicated in accordance with the rounding method of Practice E29.
1.1 This 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 | 8201;Previously | Nominal Composition, % | ||
| 8201;Copper | 8201;Zinc | Phosphorus | ||
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| C10100 | Copper, Type OFEA | 99.99B | ... | ... |
| C10200 | Copper, Type OFA | 99.95B | ... | ... |
| C10300 | ||||