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The advantages of precision-type alloys are several times higher than those of other structural materials. It is quite simple to explain this fact, because the exact correspondence of the chemical composition of any semi-finished product to the requirements of normative documentation, the absence of random impurities that reduce the useful properties of the part, and the observance of all modes of the technological cycle in the manufacturing process allows obtaining a special material of the highest level.

Characteristics of 36KNM alloy

The main characteristic determining the field of application of the 36KNM alloy is its magnetic softness. Due to this property, such material has both high magnetic permeability and the ability to fully saturate even under the action of a low-strength magnetic field. Also, this raw material is characterized by low coercive force against the background of high resistance to corrosion damage. The presence of such important performance characteristics of the material is explained quite simply, because in its composition besides iron, there are such components as molybdenum, silicon, nickel and manganese. Considering all of the above, it is quite understandable why the 36KNM alloy found its main application as a raw material for magnetic pipelines exposed to the constant influence of strong aggressive media (for example, seawater) during operation.


Chemical composition as a percentage
manganese silicon carbon nickel chromium phosphorus sulfur molybdenum copper aluminum vanadium
0.3−0.6 Up to 0,3 Up to 0.05 35−37 Up to 0,15 Up to 0,015 Up to 0,015 Up to 0,1 Up to 0,1 Up to 0,1 Up to 0,1
physical characteristics
Name Units Symbol The numerical value
Elastic modulus MPa E * 10−5 1.42
Measurement temperature ◦ C T 20
Density Kg / m3 R 8200
Electrical resistance (specific) Ohm * m R * 10 9 420
Mechanical properties (at 20 ° C)
Name of the characteristic The numerical value of the parameter for products according to GOST 14080−78
Thinning tape
Short-term tensile strength, MPa (ss) 930

Magnetic characteristics

Coercive force (not more than), (A / m) Ns
Magnetic permeability (not more than), (MH / m) Umax
Specific losses (no more) at a frequency of 50 Hz and a magnetic induction of 1 T, (W / kg) P1,0 / 50
The magnetic induction T (at least), with a magnetic field strength of 100, in magnetic fields (A / m) B100

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, the subsequent annealing and heat treatment after the end of the welding process

Buy at the best price

Quality manufacturing with constant control of all the requirements of the technological process and the compliance of semi-finished products from 36KNM alloy with all the requirements of regulatory documentation, as well as low cost of products determines the very high popularity of such material for various needs of modern production. Our company represents the whole assortment of such products and ensures a careful attitude to the needs of each customer, regardless of the cost of his order.