50NP / 50N Soft Magnetic Alloy Strip, Bar and Wire
International Equivalent
| Mark | Analogue | W. Nr. | Aisi Uns | En | Order |
|---|---|---|---|---|---|
| 50NP | 50 | 1.3927 | K94840 | NiFe50 | Availability confirmed on request |
50NP soft magnetic precision alloy
50NP, also written 50N in legacy references, is an iron-nickel soft magnetic alloy associated with high permeability and magnetic-core applications. Magnetic performance depends on chemistry, cold work, dimensions and the complete heat-treatment cycle. A grade name or analogue table is not enough to guarantee permeability, coercive force or induction in a finished component.
Strip, bar and wire purchasing details
State the accepted grade and standard, product form, thickness or diameter, width, length or coil data, tolerance, surface and quantity. Include delivery condition, annealing or final magnetic heat treatment, required magnetic and mechanical properties, sampling method, test direction, dimensional inspection, marking and certificate type. For laminations, wound cores or machined magnetic parts, provide the drawing, final section, operating field and any post-fabrication treatment so the supplier can review the required starting product.
Technical reference data
| Mn | Si | C | Ni | Fe | P | S | Cu |
|---|---|---|---|---|---|---|---|
| 0.3 - 0.6 | 0.15 - 0.3 | up to 0.03 | 49,0-50,5 | 48.33 - 50.55 | to 0.02 | up to 0.02 | up to 0.2 |
| Range | Type. | Size | d5 | sT | s in | KCU | y | Heat treatment. |
|---|---|---|---|---|---|---|---|---|
| Tape, |
35 | 145 | 440 | 60 | ||||
| - | - | mm | % | MPa | MPa | kJ/m2 | % | - |
| Nailed tape, |
3 | 685 | 780 | 15 |
| Description | Designation |
|---|---|
| - Alloy data acquisition temperature [Grad] | - 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 |
| 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 |
| 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 | - Preheating to 200-300°C with subsequent heat treatment is required |
The preserved chemistry, mechanical and physical-property tables below are reference data. The ordered specification, heat treatment and lot certificate control acceptance.
Information needed for a quote
Send 50NP or 50N, the standard, strip, bar or wire dimensions, condition, magnetic requirements, 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.