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ASTM F256-05(2015)
Standard Specification for Chromium-Iron Sealing Alloys with 18 or 28 Percent ChromiumMore info
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.
Note 1: UNS K92801 should only be considered for use at service temperatures below 300°C. The alloy is prone to sigma phase formation at temperatures close to 620°C, and exhibits brittle mechanical behavior after prolonged exposures at temperatures close to 475°C.
| Author | ASTM |
|---|---|
| Editor | ASTM |
| Document type | Standard |
| Format | File |
| Confirmation date | 2015-07-01 |
| ICS | 21.140 : Seals, glands |
| Number of pages | 7 |
| Replace | ASTM F256-05(2010) |
| Set | ASTMVOL1004 |
| Year | 2005 |
| Document history | ASTM F256-05(2010) |
| Country | USA |
| Keyword | ASTM 256;ASTM F256;ASTM F256;10.1520/F0256-05R15 |