middlj said:Approximately 0.3
Mech_Engineer said:OMEGA has a large table of emissivity values for common materials. You can start there, and maybe use a scaling factor to correct for the incorrect emissivity assumption of the thermometer. Problem is, emissivity varies strongly as a function of tempertuare, surface finish, oxidation, etc. Based on the fact that Omega's table shows Steel can vary anywhere from 0.07-0.91, I think you're going to need to measure you specific sample's properties experimentally, or get a solid temperature-dependent published table of values for your specific material and surface finish.
http://www.omega.com/literature/transactions/volume1/emissivitya.html
Carbon Steel (AISI 1045) is a type of steel that contains high levels of carbon, making it stronger and harder than other types of steel. It is also known as medium carbon steel and is commonly used in various industrial applications.
Carbon Steel (AISI 1045) has a high tensile strength, good machinability, and wear resistance. It also has good toughness, ductility, and can be easily hardened by heat treatment. Additionally, it has a low corrosion resistance and is susceptible to rust.
Carbon Steel (AISI 1045) is commonly used in the manufacturing of gears, shafts, axles, bolts, studs, and other machine parts that require high strength and wear resistance. It is also used in construction, automotive, and agricultural equipment.
Carbon Steel (AISI 1045) differs from other types of steel due to its higher carbon content, which gives it increased strength and hardness. It also has a lower ductility and corrosion resistance compared to low carbon steels, but it is less brittle than high carbon steels.
Carbon Steel (AISI 1045) is made by melting iron ore and mixing it with carbon and other elements such as manganese, phosphorus, and sulfur. The mixture is then heated and formed into various shapes through casting, rolling, or forging. The final product is then heat treated to achieve the desired properties.