KhN78T / EI435 Nickel Alloy Tube
International Equivalent
| Mark | Analogue | W. Nr. | Aisi Uns | En | Order |
|---|---|---|---|---|---|
| ХН78Т | EI435 | 2.4630 | N06075 | NiCr20Ti | Availability confirmed on request |
KhN78T and EI435 tube requirements
KhN78T, also referenced as EI435, is a legacy nickel-chromium alloy designation used for heat-resistant products. The grade name does not define every tube requirement and must not be treated as an automatic equivalent to a U.S. or European alloy. Chemistry, product standard, manufacturing route, heat treatment, section size and required properties should be compared before an alternative is accepted.
Tube dimensions, condition and inspection
Provide outside diameter, wall thickness, length, seamless or welded construction, cold- or hot-finished route, end finish, surface, tolerance and quantity. State the governing standard, delivery and heat-treatment condition, tensile or hardness requirements, flattening, flaring, pressure, eddy-current, ultrasonic or other tests, marking and certificate type. For elevated-temperature, pressure or corrosive service, include the component specification, design temperature and environment for technical review.
Technical reference data
| Ni | Cr | Fe | Ti | Si | Mn | С | P | S |
|---|---|---|---|---|---|---|---|---|
| 70,003-80,85 | 19-22 | up to 6 | 0,15-0,35 | up to 0.8 | up to 0.7 | up to 0.12 | 0,015 | 0,012 |
| Outer diameter (in mm) | Wall thickness (in mm). | Tube length | Regulation |
|---|---|---|---|
| 0,3 - 120 | 0.08 - 5 | short (0,3m - 7m), dimensional (4 - 7m), multiple of dimensional (over 4m with 5mm allowance), in coils (up to 160 m), tubing (up to 160 m), wall thickness (over 4m) | A normalization of mechanical properties and chemical composition; B normalization only of the chemical composition; C normalization only of mechanical properties. |
| t° | E 10- 5 | a 10 6 | Heat capacity | Density |
|---|---|---|---|---|
| Grad | MPa | 1/Grad | W/(m-grad) | g/cm3 |
| 20 | 2.24 | 12,6 | 8,4 | |
| 200 | 2,13 | 13 | 16,7 | 8,3 |
| 400 | 2 | 13.8 | 20.6 | 8,26 |
| 600 | 1.84 | 14.7 | 24.8 | 8,18 |
| 800 | 15.5 | 28.9 | 8,09 |
The preserved chemistry, production and physical-property tables below are reference information. Final acceptance follows the ordered tube standard and certificate.
Information needed for a quote
Send KhN78T or EI435, the tube standard, outside diameter, wall, length, construction, condition, quantity, testing, certificate needs and U.S. delivery ZIP code.
Stock, production route, origin, minimum quantity, compliance, certification, price and final delivery are confirmed during quotation. Product descriptions and reference data are not stock or suitability guarantees.
Related products and contact
Request a U.S. quote
Evek LLC serves buyers throughout the United States. Typical delivery is 2–3 weeks, subject to the exact material, specification, dimensions, quantity and availability. Send your requirement to Evek LLC with the U.S. delivery ZIP code.