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Glossary of terms for the magnetics industry Select a letter: A-B-C-D-E-F-G-H-I-J-K-L-M-N-O-P-Q-R-S-T-U-V-W-X-Y-Z T Tape Cores Cores manufactured from thin-gauge iron alloy material that has been slit to a predetermined width. Tc - Curie Temperature The transition temperature above which a material loses its (ferro)magnet properties. Most references state that the ferromagnetic material becomes paramagnetic (weakly magnetic). Tmax - Maximum Service Temperature The maximum temperature to which the magnet may be exposed with no significant long-range instability or structural changes. A proposed magnetic definition is that the hysteresis normal curve is substantially a straight line in the second quadrant up to the Tmax temperature and becomes curved above Tmax. Temperature Coefficient A factor which describes the reversible change in a magnetic property with a change in temperature. The magnetic property spontaneously returns when the temperature is cycled to its original point so long as a limit condition is not exceeded - see note below. It usually is expressed as the percentage change per unit of temperature over a specified temperature range. Note: above (or below) a critical temperature, dependent upon the material and its magnetic characteristics and magnetic circuit, an irreversible loss may take place which is recovered when the magnet is re-saturated. See Reversible Temperature Coefficients Temper A description of the metallurgical condition of the material, as in "an as-rolled temper" or "a stress relieved temper"; also a secondary or final heat treatment commonly used with tool steels to toughen them. Temperature Stabilization After manufacture, many types of hard and soft magnetic materials can be thermally cycled to make them less sensitive to subsequent temperature extremes. Tensile Tester Machine used to measure mechanical strength and ductility of material. Tensile Strength The ratio of maximum load to original cross-sectional area. The maximum load is the force (in pounds) to cause tensile sample to fail. Also known as the ultimate strength. Tesla MKSA (SI) unit for magnetic flux density, defined by Faraday's Law. A Tesla represents a volt-second per square meter per turn. One Tesla equals 10,000 Gauss Turns Number of turns of conducting material, usually aluminum or copper, that are wrapped around a winding core tube. Please send all web related questions/comments to the Webmaster. TOP | BACK | HOME | HELP | MAP | CONTACT |
