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TOPHEL-NIAL

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Journal Articles
Alloy Digest (1977) 26 (9): Ni-250.
Published: 01 September 1977
... TOPHEL-NIAL are nickel-base alloys that were developed to provide industry a type K thermocouple in which each leg possesses an adherent, tenacious, black oxide with high emissivity for rapid temperature response. Its EMF-temperature relation is in accordance with NBS Circular 561. Consequently...
Journal Articles
Alloy Digest (1992) 41 (1): Ni-400.
Published: 01 January 1992
... TOPHEL Alloy and NIAL Alloy are respectively the positive and negative thermoelements for ISA Type K thermocouples. NICROSIL/NISIL Alloys are respectively the positive and negative thermoelements of ISA Type N thermocouples. Thermocouples of 20 and 19 Alloys have the advantage of freedom from...
Journal Articles
Alloy Digest (2019) 68 (5): Ni-751.
Published: 01 May 2019
... × 10 4) Melting range, °C (ºF) 1399 (2550) Mechanical Properties Typical mechanical properties for thermocouple alloys are shown in Table 4. General Characteristics NIAL alloy is the standard negative thermoelement for Type K thermocouples. NIAL alloy is easily distinguishable for Tophel alloy, as NIAL...
Journal Articles
Alloy Digest (2015) 64 (10): Cu-842.
Published: 01 October 2015
... mechanical properties thermocouple alloys Alloy Yield strength, 20 ºC (68 ºF), MPa (ksi) Tensile strength, 20 ºC (68 ºF), MPa (ksi) Elongation, 8 gage, 20 ºC (68 ºF), % Cupron 345 (50) 586 (85) 45 Tophel 207 (30) 608 (88) 45 Nial 193 (28) 572 (83) 45 Nicrosil 414 (60) 758 (110) 30 Nisil 379 (55) 655 (95...
Journal Articles
Alloy Digest (2012) 61 (2): Cu-803.
Published: 01 February 2012
...) Specific heat, 20 ºC (68 ºF), J/kg·K (Btu/lb·ºF) Density, kg/m3 (lb/in.3) Resistivity, 25 ºC (77 ºF), m ( circular-mil/ft) CUPRON 1210 (2210) 393 (0.094) 8900 (0.320) 0.50 (300) TOPHEL 1427 (2600) 480 (0.11) 8630 (0.311) 0.68 (410) NIAL 1399 (2550) 502 (0.12) 8470 (0.305) 0.32 (193) NICROSIL 1410 (2570...