chromel
Sign in to saveChromel is an alloy made of approximately 90% nickel and 10% chromium by weight that is used to make the positive conductors of ANSI Type E (chromel-constantan) and K (chromel-alumel) thermocouples. It can be used at temperatures up to in oxidizing atmospheres. Chromel is a registered trademark of Concept Alloys, Inc.
Article
5 sectionsContents
- Chromel A
- Chromel C
- Chromel-R
- References and notes
- External links
Chromel is an alloy made of approximately 90% nickel and 10% chromium by weight that is used to make the positive conductors of ANSI Type E (chromel-constantan) and K (chromel-alumel) thermocouples. It can be used at temperatures up to in oxidizing atmospheres. Chromel is a registered trademark of Concept Alloys, Inc.
{| class="wikitable" |+ Characteristics and properties of chromel (Ni, 90%; Cr, 10% by weight) |- ! Characteristic ! Value |- | Temperature coefficient | 0.00032 K−1 |- | Electrical resistivity | 0.706 μΩ m |- ! colspan=2 | Mechanical |- | Elongation at break | −1 |- | Modulus of elasticity | 186 GPa |- | Tensile strength | 620–780 MPa |- ! colspan=2 | Physical |- | Density | 8.5 g cm−3 |- | Melting point | 1420 °C |- |Magnetic |Non-Magnetic |- ! colspan=2 | Thermal |- | Coefficient of thermal expansion | 12.8×10−6 K−1 at 20–1000 °C |- | Maximum use temperature in air | 1100 °C |- | Thermal conductivity | 19 W m−1 K−1 at 23 °C |}