Tape, circle, wire 80NHS

International Equivalent

Mark Analogue W. Nr. Aisi Uns En Order
80NHS Delivery from the stock, in stock


Precision alloy grade 80NHS refers to the magnetically soft materials. It has low coercive force and very high magnetic permeability at saturation induction of 0.65-0.75 T in weak fields. After thermal treatment with delayed cooling starting from +600°С it acquires minimal deviation of characteristics in the climatic temperature range. It is applied for cores of compact transformers, relays and chokes which work in weak fields of magnetic screens; for manufacturing of contactless relays of small thickness (less than 0.02 mm) of magnetic amplifiers and cores of pulse transformers. The alloy has a high value of initial magnetic permeability, can be magnetized to saturation in weak fields due to the additions of cobalt and nickel.

Percentage composition

Mn Si C Ni Cr P S Co
0.2 - 0.4 up to 0.25 up to 0.04 up to 0.3 0.3 - 0.6 up to 0.015 up to 0.015 26.5 - 28

Physical properties of 80NÕÑ alloy grade.

T a 10 6 E 10- 5 l C r R 10 9
Grad 1/Grad MPa W/(m-grad) J/(kg-grad) kg/m3 Oh-m-m
100 10.7
20 2.2 7980 200

Mechanical properties of 80NÕÑ alloy at 20oÑ.

Range Range. Size d5 sT s in KCU y y Heat treatment.
Tape, GOST 10 160-75 20 295 590
- - mm % MPa MPa kJ/m2 % % -
Nailed tape, GOST 10 160-75 2 1080


Physical properties of the alloy:

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-cold)] -C -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


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 final heat treatment


Magnetically soft alloy grade 80NHS is successfully used for magnetic cores of magnetic alternating field. Finds wide application in modern instrumentation in the manufacture of microphones, transformer cores, computer memory components, magnetic cores for operation in sea water, magnetic antennas. It is used in transformer construction, electric machine industry, radio engineering and electrotechnical industry, automation and telemechanics systems, measuring and computer engineering.


Magnetic soft materials are produced from low-carbon steels based on ferromagnetic iron of special purity, electrotechnical low-coercive alloys on iron or iron-nickel base, powdered and composite ferromagnetics. These alloys are melted in special induction furnaces, after which the ingots are forged or rolled.


All 80NHS grade products are certified. The technical documentation includes data on the chemical composition, the limiting percentage of impurities; the mechanical properties of 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 responsiveness of service.

Buy at the best price

Evek GmbH has a wide range of precision alloys on stock. We deliver certified products of domestic and foreign manufacturers. We appreciate the time of our customers, so we are always happy to provide expert help with the choice. Experienced consulting managers are at your service. The quality of the products is guaranteed by the strict observance of production standards. Execution of orders takes minimal time. Wholesale customers are offered discounts.