Accession Number : ADA325086

Title :   Resistivity of Fe.49CO.49V.02 High Strength Laminates from -73C to + 650 C.

Descriptive Note : Final rept. 1 Dec 95-30 Nov 96,

Corporate Author : WRIGHT LAB WRIGHT-PATTERSON AFB OH MATERIALS DIRECTORATE

Personal Author(s) : Simon, Gerard K. ; Perrin, Ronald E. ; Ohmer, Melvin C. ; Peterson, Timothy L.

PDF Url : ADA325086

Report Date : 30 NOV 1996

Pagination or Media Count : 9

Abstract : Carpenter Hiperco(R) Alloy 50 HS is a recently developed iron-cobalt soft magnetic alloy (48.94% Fe, 48.75% Co, 1.90% V, 0.30% Nb, 0.05% Mn, 0.05% Si, 0.01% C) intended for commercial applications requiring high strength. Its physical, electrical and magnetic properties have not yet been reported over the operating temperatures of interest. This report addresses the resistivity testing of this alloy in .006' thick strip product form (dry hydrogen annealed) and the subsequent conclusions. We tested the material in a cryogenic dewar from -73C to 27C and in a furnace to 650C. We found that at low temperatures, the resistivity of the material increased linearly. The coefficient of resistivity in this range was 2.9x10(exp -4)/C. At higher temperatures it increased faster than linear. The resistivity averaged 41.59 micro ohms-cm at the lowest temperature, 43.76% micro ohms-cm at room temperature and 68.48 micro ohms-cm at the highest temperature. Analytic expressions for resistivity in the full temperature range of measurements are provided. Eddy current loss at room temperature is expected to be 590 W/lb for .006' sheet at 5000 Hz.

Descriptors :   *LAMINATES, *ELECTRICAL CONDUCTIVITY, *HIGH STRENGTH, *IRON ALLOYS, *COBALT ALLOYS, *VANADIUM ALLOYS, TEST AND EVALUATION, LOW TEMPERATURE, MAGNETIC PROPERTIES, MATERIALS, HIGH TEMPERATURE, RESISTANCE, ELECTROMAGNETIC PROPERTIES, ELECTRICAL PROPERTIES, ROOM TEMPERATURE, HYDROGEN, LOSSES, DRY MATERIALS, EDDY CURRENTS, ANALYTIC FUNCTIONS, CRYOSTATS, DEWAR FLASKS.

Subject Categories : Laminates and Composite Materials
      Properties of Metals and Alloys

Distribution Statement : APPROVED FOR PUBLIC RELEASE