Transcription of I = Current Resistance Heating Wire Nickel-Chromium Alloy ...
1 3508 Independence Drive Alloy Data Table Fort Wayne, IN 46808. Toll Free: I = Current Resistance Heating wire Nickel-Chromium Alloy 80% nickel / in2/ =. 2. I Ct Ct = Temperature factor p 20% chromium - N8. p = Surface load W/in2. Common Names: Chromel A, Nikrothal 80, N8, Nichrome V, HAI-NiCr 80, Tophet A, Resistohm 80, Cronix 80, Protoloy, Nikrothal 8, Alloy A, MWS-650, Stablohm 650. Uses: Typical applications include flat irons, ironing machines, water heaters, plastic molding dies, soldering irons, metal sheathed tubular elements, cartridge elements, quartz tube heaters, etc. N8 has a low temperature coefficient of Resistance and a low change in Resistance during its service life that combine to assure faster heat-up times, more uniform operating temperatures, and a longer useful life. Its lack of reactivity with MgO refractories make it the most suitable Alloy for enclosed Heating elements, especially those operating in the higher temperature ranges.
2 The oldest and most common electric Heating Alloy , N8 is long established as the world standard of quality among all metallic Heating element materials. Its excellent mechanical stability minimizes variables in element design, assures even stretch in coiled form, and eliminates problems of shrinkage, growth, sag, or distortion in use. Composition Ni Cr Fe Al Si Mn Cu C Ti Mo W. 80% 20% None/Trace None/Trace None/Trace None/Trace None/Trace None/Trace None/Trace None/Trace None/Trace Technical Data Resistivity ( /cmf) 650 Resistivity ( /sqmf) 511. Resistivity ( /cm) 108 Nom. Temp. Coeff. of Resistance (TCR) Std. Res. Tol. <.020 5% Std. Res. Tol. >.020 3%. Thermal EMF vs. Cu + Specific Heat (20 C) cal/g Density (g/cm3) Density (lb/in3) -6. Thermal Conductivity W/cm/ C Coeff. of Linear Expansion (X 10 ) in/in/ C. Approx. Melting Point 1400 C Max. Continuous Operating Temp.
3 1200 C. UTS Hard (KPSI) 200 YTS Tensile Hard (KPSI). UTS Stress Relieved (KPSI) 175 YTS Tensile Stress Relieved (KPSI). UTS Annealed (KPSI) 100 YTS Tensile Annealed (KPSI). Magnetic Attraction None Emissivity fully oxidized Designations/Specifications ASTM = B344-B26 Forms Available wire , Ribbon Temperature Factor To obtain Resistance at working temperature multiply by the factor C t, in the following table: F 68 212 392 572 752 932 1112 1292 1472 1652 1832 2012 2192. N8 Ct Alloy Data Gage Diameter Resistance Resistance Weight Surface in2/ . AWG Inch at 68 F /ft at 68 F /lb lb/1000 ft area in2/ft at 68 F. 000 00 0 1 2 3 4 5 6 7 8 9 10 11 12 13 Gage Diameter Resistance Resistance Weight Surface in2/ . AWG Inch at 68 F /ft at 68 F /lb Lb/1000 ft area in2/ft at 68 F. 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 Information presentation property of Hyndman Industrial Products, Inc.
4 , 3508 Independence Drive, Fort Wayne, IN 46808-4518, , (Disclaimer) This information is provided for information purposes only "As is." Hyndman Industrial Products, Inc. makes no warranty of any kind with respect to the subject matter or accuracy of the information. Hyndman Industrial Products, Inc. specifically disclaims all warranties, expressed, implied or otherwise, including without limitation, all warranties of merchantability and fitness for a particular purpose. This publication may include technical inaccuracies or typographical errors; changes may be made to the information herein. If errors are found, please submit the correction via e-mail to: Include correction, and page address if possible. All trademarks referenced are the property of their respective owners. Ownership can be researched at or by contacting Hyndman Industrial Products, Inc.
