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Ribbon 49KF -permandure 2v

Ribbon 49KF -permandure 2v

Precision alloy 49KF refers to magnetically soft alloys and has a high magnetostriction, magnetic saturation of at least 2.35 T, a high Curie point of 950 ° C. Magnetic-soft materials have a high value of the magnetic initial permeability, can be magnetized in weak fields and up to saturation. These include alloys, whose composition besides iron is cobalt and nickel.

The chemical composition of 49KF in percent, according to GOST in 10994 — 74

Fe Co Ni S V Mn P C Si
47.01 — 50.7 48 — 50 Up to 0.5 Up to 0.02 1.3 — 1.8 Up to 0.3 Up to 0.02 Up to 0.05 Up to 0.3
Bounded welding — welding is possible during heating up to the tempo. 100−120 oC and thermal further processing
Compostable — In order to obtain welded quality joints, it is necessary to perform additional operations: during welding, heating to temper. 200−300 ° C, heat treatment (annealing) after welding.
Welded without restrictions — welding is carried out without thermal further processing and preheating.

Physical characteristics of the brand 49KF.

Ohm · m J / (kg · deg) W / (m · deg) Grad Kg / m3 MPa 1 / Grad
R 10 9 C L T R E 10−5 A 10 6
400     20 8150 2.2  
      100     9.2
The physical characteristics of this grade of alloy:
— the first kind of modulus of elasticity, [MPa] — E
— Heat capacity of the material (or coefficient of heat conductivity), in [W / (m · deg)] -l
— The temperature required to obtain these properties, [Grad] — T
— linear coefficient. Temper. Expansion in [1 / Grad] (temp. Interval 20 ° C), -a
— electrical resistivity, in [Ohm · m] -R
— The density of this material, [kg / m3] -r
— Specific heat of specific material in [J / (kg · deg)] (temp. Interval 20 ° C) -C

Magnetic characteristics:

— force coercive (not higher), in [A / m] Hc
— permeability is magnetic (not higher), in [MH / m] Umax
— loss of specific (not higher) frequency 50 Hz, magnetic induction 1.0 T, in [W / kg] P1.0 / 50
— Magnetic Tl induction, the magnetic field strength is not less than 100, in a magnetic field, in [A / m] B100

Mechanical characteristics of 49KF at temperatures of 20oC.

Assortment Sv Heat treatment. For example. KCU The size Y D5 ST
  MPa - - KJ / m2 Mm % % MPa
  1320           1  
Nargartovan. Tape in accordance with GOST 10160−75 490             345
Mechanical characteristics:
— Strength of short-term, in [MPa] Sv
— Yield limit (proportionality limit) for deformation of residual, in [MPa] ST
— at break, the relative elongation, in [%] D5
— the restriction is relative, in [%] Y
— Impact viscosity, in [kJ / m2] KCU


The soft-magnetic alloy 49KF is mainly used in cores and pole pieces, magnets and solenoids. It is used in electrical machine building, transformer engineering, radio engineering, electrical engineering, as well as in automation, telemechanics, and computer measuring equipment. This type of magnetically soft materials include ferromagnetic very pure iron, low-carbon steel electrotechnical (siliceous, unalloyed), precision low-coercivity alloys on iron-nickel, iron base, ferrimagnetic, ferromagnetic, powder composite. Precision alloys are used in the fields of precision machine-tool construction, in the manufacture of electronic precision instruments and household appliances, laser technology, in innovative technologies, products of metrological measuring equipment. Magnetically soft alloys are melted in special metallurgical furnaces to obtain the required shapes, and then the ingots of the alloys are rolled or forged. Magnetically soft alloys are widely used in modern industry. They are used for transformers in the manufacture of cores used in microphones, in the manufacture of components of computer memory, as well as magnetic circuits that are intended for work in seawater, as well as magnetic antennas, electric machine parts, and so on.

Buy at a bargain price

The assortment of manufactured products from the alloy 49KF, presented in LLC «Avek Global» can satisfy almost any consumer. This alloy belongs to a popular group of metal products, due to its real cost and variety of produced options. The quality of metal products is guaranteed by the absolute observance of all production technological standards. In the absence of the required type of product in the basic version, as well as in case of need of another product variant, we can produce their non-standard sizes by individual order.