The history of the discovery fehrali. Physical and mechanical properties.
Heat-resistant alloy of chrome and Nickel — nichrome with high electrical resistance are indispensable in modern electrical engineering. Almost the only disadvantage of these alloys is the high cost. In order to reduce the Nickel in the alloy was partly replaced by iron. The most successful was a formulation containing 15% Cr, 60% Ni and 25% Fe. The alloy was named Ferreira. It combines a high electrical resistance (1,05−1,40 Омхмм2/m) with high heat resistance. Used in the manufacture of high temperature electric heaters.
The name «resistant» consists of the names of its component parts: ferum -«Fe», chrome"XP" aluminium «al». The basis of the alloy is iron. Its share in the alloy, usually more than 70%. Additional alloy legarrette manganese, silicon, possible additives of Nickel.
Each type of alloy has an international counterpart.
|Name||AISI / Grade||UNS||GOST||DIN / Werkstoff|
|Kathal APM||CrAl 25 5||92 500||KH23JU5T||1.4765|
|Alkrothal 14||CrAl 14 4||K91670||H15YU5||1.4725|
|Kanthal D||CrAl 20 5||K92400||KH23JU5||1.4767|
|Elongation at break (%)||«12||«12||«12||«12|
|Tensile strength at break N/mm2||590−690||580−680||630−780||630−780|
|The maximum temperature continuous operation (°C)||750||650||1250||1250|
|Electrical resistivity (Ωмм2/m)||1.30 ±0.05||1.25 ±0.05||1.35 ±0.05||1.35 ±0.05|
|Melting point (°C)||1500||1450||1500||1500|
|Thermal conductivity (KJ/m*h*°C)||52.4||52.7||60.2||60.2|
|Service life, h||«4 000||580−680||«4 000||«4 000|
Supplier Evek GmbH offers to buy resistant price is optimal in this segment of the rental. Offer to buy resistant with specialized warehouses Evek GmbH with delivery to any city. Full compliance with modern quality standards. Timely delivery is provided by offices in the cities of Eastern Europe.
To buy, best price
Supplier Evek GmbH offers to buy resistant price — due to the technological features of production without the inclusion of additional costs. On the website supplier Evek GmbH has placed information about the latest product arrivals. Always in stock precision alloy, the price is optimal from the supplier.