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N50 sheet, strip

Wire, rod, bar Sheet, strip


Permalloys are characterized as iron-nickel alloys that have relatively high permeability in weak fields. Belonging of every alloy to a defined group depends on extrusion rate of magnetic and electrical properties and a quantity of nickel. Marking 50N indicates a content of nickel in alloy (50%). It is hard-welded and that is why there are made a thermal processing and the last annealing for strengthening the welds. Nowadays, sheet, strip of this grade have the widest application. These are details of soft-magnetic constructions that are used in instrument engineering and energetics.


Due to its small magnetostriction, sheet, strip are used in high-accurate units that have stable characteristics in a variable magnetic field. They possess small changes of real resistance depending on force and sense of a magnetic field. Sheet, strip are used in manufacturing the transformer flakes, elements of magnetic recording heads, cores of small-sized transformers, relay actuators, chokes and details of magnetic circuits. They operate while working with minimal magnetizing at high magnitudes of induction.


Percentage composition according to GOST 10 994 — 74

B Fe Cu S Si Mn Ni C
≤0,02 48.33 — 50.55 ≤ 0.2 ≤0,02 0.15 — 0.3 0.3 — 0.6 49,0−50.5 ≤0.03

Iron-nickel alloys are smelted in an open arc furnace. Except for analogous alloys, permalloy 50N does not contain phosphorus. It possesses a small variation of electrical resistance (not more than 5%), which are defined by force and existent magnetic orientation. This alloy must be alloyed with such elements as cuprum, mangan, silicon for strengthening of electromagnetic properties. A smelt is done in a vacuum or inert gas envinronment. Semi-fabricates of minimal thickness are manufactured with a method of cold-rolled stamping with further annealing. It is done for increasing magnetic properties. Permalloy of this grade has improved features and an increased magnetizing. This alloy is characterized by a significant magnetic sensitivity in relation to external changes.

Physical characteristics

Description Identification
Modulus of elasticity of first kind [MPa] E
Heating capacity of material (or coefficient of conductivity for heat) [V/(m/degree] l
Required temperature for obtaining of actual features [Degree] T
Linear expansion thermal coefficient [1/degree] (range of temperatures 20°С) a
Specific electrical resistivity [Оhm-mm2/m] 0,81 R
Density of a material, [kg/m3] r
Specific heat of a material [J/(kg/degree)] (range of temperature 20°С) C

Magnetic characteristics

Description Identification
Coercive field (not higher) [A/m] Hc
Magnetic inductive capacity (not higher) [mH/m] Umax
Saturation induction 2 T [V/kg] P1.0/50
Magnetic T induction, magnetic field strength no less than 100, in magnetic field, [A/m] B100

Mechanical characteristics

Description Identification
Short resistance to rupture [MPa] sv
Flow limit (proportional limit load) for permanent change of form [MPa] sT
Percent elongation at fracture [ % ] d5
Contraction ratio [ % ] y
Impact hardness [ kJ/m2] KCU
Brinell hardness [MPa]-1 120−210 HB


Type Description
limitedly weldable welding is possible at heating to 100−120°С and last heat treating
hardly weldable in order to obtain a qualitative welded joints, it is necessary to perform the following operations: while welding to heat it up to 200−300°C, heat treating (annealing) after welding
weldable without stint welding is done without further heat treating or previous heating

N50 sheet, strip supplier

«Auremo» N50 sheet, strip supplier offers to buy N50 sheet, strip by wholesale. There is a wide range of half-finished goods in stock. Strip, sheet 50N are always in stock. You can buy them for an affordable N50 sheet, strip price from a supplier. Buy these goods right now! We have the best price-quality ratio. We invite you to a partnership. N50 sheet, strip price is privileged for wholesale buyers.

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All products are certificated. A quality is guaranteed by rigorous technology compliance of manufacture. Our managers are always ready to answer any questions and to give a knowledgeable assistance. A large assortment will not leave you without a choice. You can easily buy N50 sheet, strip. Just connect us with a convenient way to you. Phone numbers, e-mail addresses of the closest company’s offices are located in section «Contacts». Order a service «Call-back» and our manager will help you to choose products that will fit your individual requirements. Buy N50 sheet, strip right now! Strip, sheet 50N are always in stock. You can buy them for the best N50 sheet, strip price from N50 sheet, strip supplier.