New fechral
Fechral is smelted on the basis of chromium, iron and aluminum. The name reflects its main components: ferrum — «fe», chrome — «xp», aluminum — «al». The base component is iron. Its share in the alloy, as a rule, is more than 70%. The composition is alloyed with manganese, silicon, nickel additives are possible. Each brand of fechrali has an alphanumeric designation, which depends on the content of the main elements.
Advantages of GS SY
High electrical resistivity of 1,2 — 1,3 Ohmmm2 / m is combined with high t ° melting (1500 ° С). The relatively low density (7.2 g / cm³) makes the alloy 17% lighter than nichrome. The use of cheap aluminum instead of expensive nickel makes the alloy 6 times cheaper than nichrome. Fechral is distinguished by its corrosion resistance in a vacuum, aggressive environments (carbonaceous, sulfuric, oxidizing), in air. The Achilles heel of the alloy is fragility, making it difficult to make thin ribbons and wires from it.
Stamps of fecral
The most popular brands are X15Y5, X23Y5T, X23Y5. The last alloy is most often used for the production of a tape, and X23JST is a wire. Kanthal D (X21YO) contains 73.2% Fe; 22% Cr; 4.8% Al, t ° melting point: 1500 ° C. International name: Kanthal D, eurofehral, megapyr, Alchrome DK, Alloy 815, Resistohm 135, Aluchrom 5, GS SY. It is possible to supply the feces of similar brands: OCr15Al5, OCr27Al7Mo2, OCr21Al6Nb, FeCrAl + Y.
Designation of the alloy by the method of use. Stamps for heating elements are denoted by H; For tubular electric heaters — heater; For resistance nodes — C.
GS SY production
The cost price of production is 6 times lower than nichrome. The reason for this is the replacement of expensive nickel for cheaper aluminum and iron. From the GS SY brand, wire is manufactured by pressing, drawing or rolling. Finished goods are wound on a coil or folded into a bay. The GS SY tape is produced by rolling or electrolysis, and then rolled into a roll.
| Chemical composition (%) | |||||||
|---|---|---|---|---|---|---|---|
| Alloy | Ni | Cr | C | Mn | Ti | Al | Fe |
| X27Y7M | ≤0.60 | 22.0−24.0 | ≤0.05 | ≤0.30 | 0.2−0.5 | 5.00−5.80 | Rest |
| X21YU6B | ≤0.60 | 21.5−23.5 | ≤0.05 | ≤0.30 | 0.15−0.40 | 4.60−5.30 | Rest |
| X21YU4 | ≤0.60 | 13.5−15.5.5 | ≤0.08 | ≤0.70 | 0.2−0.6 | 4.00−5.50 | Rest |
| Physical properties of feschal GS SY | |||
|---|---|---|---|
| Alloy | X21YU4 | X21YU6B | X27Y7M |
| Elongation at break (%) | >12 | >12 | >12 |
| Breaking strength N / mm2 | 590−690 | 580−680 | 630−780 |
| Density g / cm3 | 7.15 | 7.40 | 7.25 |
| Maximum continuous temperature (° C) | 750 | 650 | 1250 |
| Specific electrical resistance (Ωmm2 / m) | 1.30 ± 0.05 | 1.25 ± 0.05 | 1.35 ± 0.05 |
| Melting point (° C) | 1500 | 1450 | 1500 |
| The coefficient of linear expansion (αx10−6 / ° C) | 15.8 | 15.4 | 15.0 |
| Thermal conductivity (KJ / m * h * ° C) | 52.4 | 52.7 | 60.2 |
| Service life, hours | > 4,000 | 580−680 | > 4,000 |
Buy at a bargain price
LLC «Avek Global» sells fochrals at a bargain price. It is formed under the influence of world prices for color hire without including additional costs. The face of our company determines the high level of service and excellent product quality. The website of Avek Global LLC reflects the most timely information. Our managers are always happy to help with the solution of the issues that have arisen. The implementation of orders takes minimal time. Discounts for wholesale buyers are provided. Deliveries go directly from the warehouse. This gives consumers a clear choice of products and significant savings in warehouse stocks and premises.