What you don't know the hard facts of thermocouple sheath material

Thermocouple is a generic temperature measuring device, can be exposed to extreme environment. When such circumstances, your sheath material selection is one of the most important, because different material and different temperature range, melting point and chemical resistance.

this week we will look at different sheath material, and provide some useful information for you, in three of the most common.

sheath material 310 stainless steel sheath material

tells us a quick Google search a thermocouple can be in a wide range of sheath material, such as ceramic, titanium, aluminum, carbon steel, copper, and a series of stainless steel. Although may, many of the sheath material is not common. In fact, in the past 30 years, we have been manufacturing thermocouples, three peacekeeping N engineering has never done anything aluminum sheath. So give you unusual brief details of the sheath material, we will further our three of the most popular. Inconel 600 alloy, 310 stainless steel, 321 stainless steel.

the most common sheath material Inconel 600:

nickel chromium austenitic nickel-based superalloy is family, is the most widely used thermocouple sheath material. Resistance to oxidation and corrosion resistance of alloy is very suitable for service under extreme conditions of pressure and heat. Once heated alloy forming strong, stable, oxide layer to protect the surface from further attack passivation. Inconel 1175 & 600 deg; The highest temperature C

the Inconel alloy family is the earliest in the virgin alloy by the research team in the 1940 s.

Inconel 600 by:

nickel:

75% cr: 14 -

17% iron: 6 - 1% 10% manganese:

copper: 0.

5% silicon: 0.

5% carbon: 0.

15% sulfur: 0.

015% Inconel 600 cannot be used for sour environment and has a good high temperature strength, cracking and oxidation resistance to high temperature corrosion.

stainless steel:

stainless steel does not rust, corrosion, stains or water as ordinary steel. However, it does not fully proves that in low oxygen, high salinity, or poor air circulation environment.

there are different types of stainless steel, with the addition of different elements, such as nickel or carbon stainless steel can be according to certain applications. 310 stainless steel:

310 stainless steel is a kind of popular sheath material, it has excellent heat resistance, the maximum temperature of 1150, it has good mechanical and corrosion resistance. 321 stainless steel:

this material is only 870 & deg; The highest temperature C and titanium stable intergranular corrosion. The design of the alloy to overcome - 480 870° Susceptibility of carbon deposition and C is the most commonly used applications in the aerospace and chemical industry.

although this article only touches on large areas of the sheath material, are these made in the research and development and engineering of thermocouple used in one of the most common material.