Foil and strip are flat products, a hallmark of which is a small thickness. When creating heaters for electric furnaces, as well as resistive elements of electrical devices from flat products, large thickness is not required. Although high electrical resistance is a necessity, therefore, Nichrome foil and strip are excellent for the role of blanks in these areas.
At Metotechnics you can purchase both, Nichrome strip and foil. In order to do so, just call us, fill out and send an application via email or make a direct order on our website’s “Price List” section.
You can learn more about specific precision alloys, along with production methods and their applications, by visiting relevant sections of the mentioned page (“Price List”).
Grades
These intermediate products are made of nichrome NiCr 80 20 и NiCr 60 15. In some cases, there are used alloys generated from vacuum-induction smelting. For instance X20N80VI (the letters VI in the marking), as well as those containing Zirconium, X15H60H (the letter H in the marking). This special smelting method allows reducing the number of harmful impurities, while the addition of Zr leads to an increase of the final product’s reliability, operating even at maximum allowed temperatures.
The chemical compound of marking stamps Ni60Cr15, H15N60-N, Ni80Cr20, H20N80-N, along with others are regulated by the standard GOST 10994-74.
Production
Nichrome strip and foil are formed as a result of the metal-rolling process, which is carried out without heating the blanks, thus the products are cold-rolled.
Nichrome foil is a strip that has a small thickness. As a rule, it is 0.1 mm or less. To solve some industrial problems, such small sizes of semi-finished products are necessary.
Depending on the thickness of the product, it is made either in soft or hard form. At a thickness of 0.2 mm or more, heat treatment (annealing) is applied, and the blank becomes soft. At a thickness of less than 0.2 mm, the intermediate product is produced solid. In some cases, the surface etching is applied.
We also produce flattened nichrome strip. The peculiarity of this product is its small thickness and width. As an example, we can give a semi-finished product with dimensions 0.1x2 mm, 0.2x3 mm, produced only as non-annealed.
Product dimensions, mechanical properties, delivery status, electrical resistance, and maximum operating temperatures are regulated by GOST 12766.2-90 and GOST 12766.5-90.
Application
The main field of Nichrome strip’s application is the manufacture of flat heaters. Such heaters are most often used in industrial electric furnaces, electric dryers, as well as in household electric heating devices, including water heaters.
Another area of application is the production of resistance elements (resistors). Such resistors are installed in various electrical installations: starter rheostats, blocks of start-up resistors of cranes and others.
Pricing
On the Pricing page, brands, dimensions, prices of Nichrome strip along with foil’s are presented. Online ordering of products is also available there.