alumel

Alumel is an alloy consisting of approximately 95% nickel, 2% aluminium, 2% manganese, and 1% silicon. This magnetic alloy is used to make the negative conductors of ANSI Type K (chromel-alumel) thermocouples and thermocouple extension wire.{{Cite news|url=http://www.keatsmfg.com/blog/working-with-chromel-alumel-constantan/|title=Working with Chromel, Alumel & Constantan|date=2015-03-12|newspaper=Keats Manufacturing Co.|language=en-US|access-date=2017-01-10}} Alumel is a registered trademark of Concept Alloys, Inc.[http://conceptalloys.com/concept-alloys-intellectual-property/ Concept Alloys, Inc. Intellectual Property] retrieved 12 April 2016

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|+Properties of Alumel (95% Ni, 2% Al, 2% Mn, 1% Si)

Electrical resistivity

| 0.294 μΩ m

Temperature coefficient

| 23.9×10⁻⁴ K⁻¹

Curie point

| 152 °C{{Cite journal | last1 = Horton | first1 = J. L. | last2 = Kollie | first2 = T. G. | last3 = Rubin | first3 = L. G. | doi = 10.1063/1.323530 | title = Measurement of B versus H of Alumel from 25 to 180 °C | journal = Journal of Applied Physics | volume = 48 | issue = 11 | pages = 4666 | year = 1977 |bibcode = 1977JAP....48.4666H | doi-access = free }}

Density

| 8.61 g cm⁻³

Melting point

| 1399 °C

Tensile strength (annealed)

| 586 MPa

Tensile strength (stress relieved)

| 1030 MPa

Tensile strength (hard)

| 1170 MPa

Coefficient of thermal expansion

| 12×10⁻⁶K⁻¹ at 20 °C

Specific heat

| 0.523 J g⁻¹ K⁻¹ {{Cite web|url=https://www.omega.com/temperature/Z/pdf/z016.pdf|archive-url=https://web.archive.org/web/20170724022707/https://www.omega.com/temperature/Z/pdf/z016.pdf|url-status=dead|archive-date=2017-07-24|title=Physical Properties of Thermoelement Materials|website=Omega.com|access-date=2018-04-24}}

Thermal conductivity

| 29.7 W m⁻¹ K⁻¹ {{Cite web|url=http://www.azom.com/article.aspx?ArticleID=7802|title=Super Alloy Alumel|date=2012-11-09|website=AZoM.com|access-date=2017-01-10}}

References

External links

[https://web.archive.org/web/20170724022707/https://www.omega.com/temperature/Z/pdf/z016.pdf Application guide and material properties of thermocouple wires (via Omega Engineering, Inc).]

Category:Nickel alloys

Category:Aluminium alloys