Wire 68NKHVKTJU - эп578
Relevance
Wire 68NKHVKTJU-VI (ЭП578-VI) at high temperature and long-term use is not susceptible to oxidation. It is plastic, resistant to corrosion even in the atmosphere of nitrogen and ammonia, making it popular in the metallurgical industry and petrochemical industry. Welded without restriction, applies to precision high-temperature steels, which have predetermined characteristics of elasticity. The main disadvantage of this wire is the lack of stability of the atmosphere of sulfur and sulfur compounds. The high cost of wire tied to the high cost of Nickel, which is the main component of the alloy. The alloying components of the alloy increase the technological features of the wire: resistance, heat resistance, ability to confront aggressive media. Doping of excess leads to the increase in the cost of the alloy, therefore, this process is done economically — the alloy must be manufacturable, and its operational performance should meet the required level.
| Chemical composition of wire 68NKHVKTJU-VI, in percent. | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Si | C | Fe | Mn | P | S | Ni | Cr | V | W | Ce | Co | Al | Ti | Nb | - | B | Cu |
| to 0.4 | to 0.05 | to 1 | to 0.4 | to 0.015 | 0.01 | 55.402 — 63.5 | 18 — 20 | to 0.2 | 9 — 10.5 | to 0.05 | 5.5 — 6.7 | 1.3 — 1.8 | 2.7 — 3.2 | to 0.2 | B, Ce — calculation | up to 0.003 | to 0.07 |
Identify the physical properties
— Yield strength, σ 0.2 N/mm2
contraction ratio Ψ, %
the elongation at break δ, %
— tensile strength, σ in N/mm2
— impact strength, σsub>0,2 sub> N/mm2
— a measure of the thermal conductivity of alloy (W/(m·K) — l
— density of substance (kg/m. sq) — r
— specific heat of heat (amount of heat required to increase temperature of 1 kg/ 1 gr. (Joule / kg-Kelvin)) — C
— electrical resistivity (ability to conduct an electric current at t = 20° (Omhm2/m) — R
-the temperature at which the alloy has acquired such properties — T
— modulus of elasticity (MPa, young’s modulus) — E
— coefficient of thermal linear expansion (temperature change 1°) — and
Mechanical properties of the wire: GOST 10994−74 and 1375−1570
contraction ratio (%) — y
— impact strength (kJ / m) — KCU
— material hardness Brinell (kgf/mm. sq) — HB
temporary fracture resistance (MPa) — sB
— the limit of proportionality (MPa) — sT
— elongation at tension (in %) — d5
The use of wire 68NKHVKTJU-VI.
Wire brand 68NKHVKTJU-VI is popular in electric furnace heaters for almost all areas of industry. It is used in resistor elements, rheostats, as well as in the production of components of vacuum devices and soldering of high reliability. Also, the wire can be used in the form of heating and cutting element in thermal packaging knives, household, industrial with hot-air heating, water-heating systems. The most widely used this wire in petrochemical engineering.
Buy at best price
Heat-resistant, heat-resistant wire 68NKHVKTJU-VI is an example of the optimal ratio price/quality. Manufacture of alloy 68NKHVKTJU-VI, is governed by the technical conditions 14−1-4470−88. Assortment of wire, presents in stock, LLC «AVEK global» can satisfy almost any consumer. This wire is a popular type of steel products with an affordable price, as well as a large number of production versions. The quality of the products is guaranteed by compliance with all technological norms of production.