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The alloy labeled 49K2 °F and the like, due to its special chemical composition and high-precision processing technology, have a number of unique properties and operating parameters at all stages of production. Like all other precision materials, this alloy is distinguished not only by the absence of harmful impurities in its composition, but also by the special precision of material processing in the process of manufacturing various semi-finished products from it (cold rolled or hot rolled tapes, forged bars, wire and much more).

Characteristics of alloys 49K2 °F and 492FA-VI

The alloy 49K2 °F and its variety, obtained by smelting with a vacuum-induction method with the marking 49K2FA-VI, refers to the magnetically soft type. Due to this feature, this material has a sufficiently high index of magnetic permeability and is able to magnetize to full saturation even under the action of a weak magnetic field. As a rule, iron and nickel, as well as cobalt and some other similar components are necessarily included in the raw material of this type. Magnetic properties determine the main field of application of products from the alloy labeled 49K2 °F, it is used for the production of magnets, various solenoids, as well as pole-type cores and tips for magnetic equipment.

The production of such raw materials involves smelting with the use of special metallurgical furnaces and subsequent processing by pressure (forging, rolling, etc.). The production process is quite labor-consuming and requires the recruitment of highly qualified personnel, as well as constant control over optimal processing regimes at all technological stages.


Chemical composition as a percentage
manganese silicon carbon nickel chromium phosphorus sulfur cobalt
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 characteristics
Name Units Symbol The numerical value
Elastic modulus MPa Ex10−5 2.2
Measurement temperature ° C T 20
Density Kg / m3 R 7980
Electrical resistance (specific) Omxm Rx109 200
The index of linear temperature expansion (at t = 100 ° C) 1 / deg Ah106 10.7
Mechanical properties (at 20 ° C)
Name of the characteristic The numerical value of the parameter for products according to GOST 10160−75
Tape Thinning tape
Short-term tensile strength, MPa (ss) 590 1080
Yield strength, MPa (sT) 295
Relative elongation at break,% (d5) 20 5

Weldability indexes

The alloy has limitations on weldability The welding process requires some preliminary preparation (warming the contacting surfaces to one hundred and one hundred and twenty degrees and subsequent heat treatment of the seam zone)
The alloy has no weld constraints No additional operations are required
Hard to weld material It is necessary to warm the contacting surfaces to two hundred or three hundred degrees, subsequent annealing and heat treatment after welding

Buy at a bargain price

Compliance with the requirements of the regulatory documentation for the production and supply of precision materials and the low cost of semi-finished products of the 49K2 °F brand makes them highly in demand today. On our site there is a large selection of products from this material and the most convenient terms of delivery and payment for the order.