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Update #2 was published as notification that this is now a National Standard of Canada This PDF includes Update #2 1 General NOTE - This Part is intended to be read together with the Standard for Low-Voltage Fuses - Part 1: General Requirements, h

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This specification establishes the requirements for wrought forms and fabricated shapes of oxygen-free copper with UNS No. C10100 suitable for use in electron devices. Specimens shall be appropriately sampled and shall undergo hydrogen embrittlement (reverse bend) test, special macro examination, and special microscopical examination. Materials shall adhere to specified mechanical, dimensional, chemical composition, electrical resistivity, and grain size requirements.1.1 This specification establishes the requirements for wrought and fabricated shapes made from Copper UNS2 No. C10100, conforming to the chemical requirements of Specification B170, Grade 1, and suitable for use in electron devices.1.2 The requirements of this specification are in addition to those prescribed in the following product specifications appropriate to the material being ordered: B1, B2, B3, B75/B75M, B152/B152M, B170, B187/B187M, B188, B272, and B372. In case of conflict, however, this specification shall take precedence.1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.1.3.1 Exception—grain sizes are in metric units and are standard.1.4 The following safety hazard caveat applies to sections 17.4, 17.5 and 18.7 of this specification: This 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 and health practices and determine the applicability of regulatory limitations prior to use.

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This document is the primary American National Standard on application of the metric system. It emphasizes use of the International System of Units (SI), which is the modern, internationally accepted metric system. It includes information on SI, a limited list of units recognized for use with SI, and a list of conversion factors, together with general guidance on style and usage. It also lists older "metric" units that shall no longer be used. The word primary implies that other metric standards in the United States should be consistent with this document.

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