1.1 This specification covers nominal and minimum wall-thickness welded tubes and welded and cold worked tubes made from the nickel alloys listed in Table 1. Anticipated uses cover applications where strength and strength at elevated temperatures are desired attributes. Some examples are hydraulic control lines, boilers, heat exchangers, and solar absorbers.

1.2 Tube shall be supplied in one of the following conditions; cold worked, cold worked and precipitation hardened, solution annealed plus precipitation hardened, or solution annealed and descaled conditions. When atmosphere control is used, descaling is not necessary.

1.3 This specification covers tube ¹/₈ to 6 in. (3.2 to 152.4 mm) in outside diameter and 0.015 to 0.148 in. (0.41 to 3.7 mm) inclusive in wall thickness.

1.4 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.

1.5 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 become familiar with all hazards including those identified in the appropriate Safety Data Sheet (SDS) for this product/material as provided by the manufacturer, to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.6 This 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.