Wire 68NKHVKTU - EP578
International Equivalent
| Mark | Analogue | W. Nr. | Aisi Uns | En | Order |
|---|---|---|---|---|---|
| 68NKhVKTYu | EP578 | Delivery from the stock, in stock | |||
| KhN68VKTYU | EP578 | Delivery from the stock, in stock |
Wire 68nhvktu - ep578
General Characteristics
68NKhVKTU-VI wire (obsolete name EP578-vi) is produced according to the technical specifications 14-1-4470-88. It belongs to the group of heat-resistant precision steels with high elasticity characteristics. It is characterized by stability even at high temperatures for a long time. What makes this wire popular is that it is very wear resistant and actively resists oxidation in nitrogen or ammonia environments. This allows it to be widely used in the manufacture of industrial and consumer electrical equipment. Such technological characteristics as heat resistance, heat resistance and the ability to withstand aggressive environments are achieved by alloying components: cobalt, titanium, tungsten, niobium. The main disadvantage is considered to be the instability to the atmosphere of sulfur compounds. The relative high cost of the wire is due to the high cost of nickel - the main component of the alloy.
Designations
Physical properties of the alloy:
| Description | Designation |
|---|---|
| - The temperature at which the alloy data is obtained [degrees Celsius] | - T |
| - Modulus of elasticity of the 1st kind, [MPa] | - E |
| - Coefficient of thermal linear expansion (at 20°C), [1/Grad] | -a |
| - Specific electrical resistance [Ohm-m] -R | -R |
| - Specific gravity [g/cm3] -r | -r |
| - Heat transfer coefficient [W/(m-grad)] -l | -l |
| - Specific heat capacity (at 20°C), [J/(kg-grad) | -C |
Mechanical properties:
| Description | Designation |
|---|---|
| - Ultimate yield strength (yield strength for permanent deformation) [MPa] | sT |
| - Tensile strength [MPa] | sT |
| - Ratio constriction [ % ] | y |
| - Tensile elongation [ % ] | d5 |
| - Brinell hardness, in [MPa] | HB |
| - Impact toughness [ kJ/m2 ] | KCU |
Magnetic properties :
| Description | Designation |
|---|---|
| - Coercive force (within) [ A/m] | Hc |
| - Magnetic permeability (not more than) [ MHN/m] | Umax |
| - Losses (not more than) at frequency 50 Hz and 1.0 Tl [ W/kg ] | P1.0/50 |
| - Magnetic induction Tl (not less) at magnetic field strength 100, in magnetic fields [ A/m] | B100 |
| - Coercive force (not less), [ A/m] | Hc |
| - Magnetic permeability (not more than), [ MHN/m] | Umax |
| - Losses (not more than) at frequency 50 Hz and 1.0 Tl [ W/kg ] | P1.0/50 |
weldability:
| Designation | Description |
|---|---|
| Limited weldable | - Must be preheated to 100-120°C with subsequent heat treatment |
| no restrictions | - No need for preheating and final heat treatment |
| Difficult to weld | - need for preheating to 200-300°C with subsequent heat treatment |
Percentage composition of 68NKHVKTU-VI wire
| Ni | Cr | V | W | Ce | Si | C | Fe | Mn | P | Ti | Nb | Ce | Co | Al | B | Cu | Ni |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 55.402 - 63.5 | 18 - 20 | up to 0.2 | 9 - 10.5 | up to 0.05 | up to 0.4 | up to 0.05 | up to 1 | up to 0.4 | up to 0.015 | 2.7 - 3.2 | up to 0.2 | up to 0.05 | 5.5 - 6.7 | 1.3 - 1.8 | up to 0.003 | to 0.07 | 55.402 - 63.5 |
Use
Manufacture of industrial and residential electric heaters used in drying and firing furnaces. This type of wire is used for rheostats, resistor elements, resistance nodes of electric vacuum devices, soldering irons and electric stoves of high reliability. Such wire is in demand in industrial, domestic air heating systems and also as a heating and cutting element in packing thermal knives.
Supply
The presented 68NKHVKTU-VI wire is certified. The technical documentation includes data on the chemical composition, the limiting percentage of impurities; mechanical properties of the products. From us you can buy in bulk a variety of semi-finished products for large-scale production. We also offer good conditions for retail buyers. You will be satisfied with the level of service and efficiency of service.
Buy at a bargain price
The website of Evek GmbH reflects the fastest information on the purchase of precision alloys to date. Experienced managers who are always in touch are ready to provide highly qualified advice on any current issues. We sell semi-finished products of rare and non-ferrous alloys at a competitive price. Products are manufactured on the most modern equipment and meet the requirements of international quality standards. Regular customers are offered a system of discount discounts.