Accession Number:

AD0257694

Title:

HEAT RESISTANCE OF METALS UNDER VACUUM

Descriptive Note:

Corporate Author:

FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s):

Report Date:

1961-02-13

Pagination or Media Count:

1.0

Abstract:

The results of tests on heat-resistant alloy specimens at 1200 and 1300 C and at a pressure of 0.04 mm Hg show that alloys behave in different ways under vacuum. The following alloys were tested for a period of 110 hr EI-626, EI-595, EYa-3S, EI-417, EYa-1, Kh20N77T3 and Kh20N80. The following conclusions were made 1 when heat-resistant alloys are used in vacuum furnaces the possibility of evaporation must be taken into account 2 for heaters operating at temperatures up to 200 C in any vacuum a double nichrome is recommended and 3 for heaters operating at a temperature of 1300 C and at pressures of the order 0.01 mm Hg or more, the alloy EI-626 is recommended. At lower pressures and 1300 C, the alloy EI-626 cannot be used because of intensive evaporation. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE