Abstract

This specification covers rolled precipitation hardenable UNS N09908, N09925, and N07725 nickel-iron-chromium-columbium-titanium-aluminum alloy plates, sheets, and strips in annealed condition. These materials are used as sheathing for superconductor cables, tooling for the fabrication of such cables and for other applications that require materials with low coefficients of expansion. Precipitation heat treatments for the materials entail heating to a specified temperature, holding at that temperature and then air or furnace cooling.

This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

1. Scope

1.1 This specification covers rolled precipitation hardenable nickel-iron-chromium-columbium (Nb)-titanium-aluminum alloy (N09908) plate, sheet, and strip in the annealed condition (temper). This alloy is used as sheathing for super conductor cables, as tooling for fabrication of such cables, and for other applications requiring a material with low coefficient-of-expansion properties.

1.2 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 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 Material Safety Data Sheet (MSDS) for this product/material as provided by the manufacturer, to establish appropriate safety and health practices, and determine the applicability of regulatory limitations prior to use.

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

E8 Test Methods for Tension Testing of Metallic Materials

E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications

E228 Test Method for Linear Thermal Expansion of Solid Materials With a Push-Rod Dilatometer

E1473 Test Methods for Chemical Analysis of Nickel, Cobalt, and High-Temperature Alloys

Keywords

plate; sheet; strip; UNS N07725; UNS N09908; UNS N09925; Aluminum alloys (plate/sheet)--specifications; Columbium (Nb) alloy; Iron alloys--specifications; Nickel alloy plate/sheet/strip--specifications; Nickel-iron alloy--specifications; Nickel-iron-chromium-columbium (Nb)-titanium-aluminum alloy; Precipitation-hardening nickel alloy--specifications; Titanium (Ti)/alloys--specifications; UNS N09008 (Ni-Fe-Cr-Nb-Ti-Al alloy, Incoloy alloy 908) ; ICS Number Code 9925; 77.140.20 (Steels of high quality)

DOI: 10.1520/B0872-06R11

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ASTM B872