ASTM F256-94(1999)

Standard Specification for Chromium-Iron Sealing Alloys with 18 or 26 Percent Chromium

STANDARD published on 10.6.1999

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The information about the standard:

Designation standards: ASTM F256-94(1999)
Note: WITHDRAWN
Publication date standards: 10.6.1999
SKU: NS-54130
The number of pages: 8
Approximate weight : 24 g (0.05 lbs)
Country: American technical standard
Category: Technical standards ASTM

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Annotation of standard text ASTM F256-94(1999) :

Keywords:
Chromium, Chromium-iron sealing alloys, Glass electronic applications-seals, Glass-to-metal sealing alloy, Iron-chromium alloys, Metal electronic components/devices, Sealing alloys, Seals-electronic applications, UNS K91800 (iron, chromium sealing alloy), UNS K92801 (iron, chromium sealing alloy), Cr-Fe sealing alloys (with 18/26 % Cr), spec, ICS Number Code 21.140 (Seals, glands)

Additional information

1. Scope

1.1 This specification covers two chromium-iron alloys, the former, (UNS K91800), nominally 18% chromium, balance iron, the latter, (UNS K92801), nominally 28% chromium, in strip, bar, wire, and rod forms intended primarily for sealing to glass in electronic applications.

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.

1.3 The following hazard caveat pertains only to the test method portion, Sections 16 and 17, 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.

2. Referenced Documents

A370-23	Standard Test Methods and Definitions for Mechanical Testing of Steel Products
E3-11(2017)	Standard Guide for Preparation of Metallographic Specimens
E18-22	Standard Test Methods for Rockwell Hardness of Metallic Materials
E38-85	Methods for Chemical Analysis of Nickel-Chromium and Nickel-Chromium-Iron Alloys (Withdrawn 1989)
F140-98(2020)	Standard Practice for Making Reference Glass-Metal Butt Seals and Testing for Expansion Characteristics by Polarimetric Methods
F144-80(2019)	Standard Practice for Making Reference Glass-Metal Sandwich Seal and Testing for Expansion Characteristics by Polarimetric Methods
E29-22	Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E228-22	Standard Test Method for Linear Thermal Expansion of Solid Materials With a Push-Rod Dilatometer
F14-80(2019)	Standard Practice for Making and Testing Reference Glass-Metal Bead-Seal

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