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Precision alloys include special materials that possess not only high performance characteristics of a certain direction, but also precise chemical composition without harmful impurities, thanks to which the characteristics of such raw materials regulated by standards always remain unchanged. Also, similar materials are distinguished by high precision of technological processing. The geometric dimensions of any of the semi-finished products of this type and the quality of its surface always correspond to the highest standards and requirements.

Specifications of 40KhNM alloy

The material labeled 40ХНМ refers to the type of precision alloys with the established parameters of elastic properties. Due to such a feature, such raw materials are widely used for the manufacture of parts, where this indicator is a primary condition for the quality and reliability of the work of the part. The invariable sphere of application of the material remains the production of spring clock mechanisms, various springs of cylindrical and twisted type, as well as surgical products and many other details. Typically, the operating temperature for semi-finished products made from such raw materials as 40KhNM alloy should not exceed four hundred degrees.


Chemical composition as a percentage
silicon carbon iron manganese phosphorus nickel sulfur molybdenum
1.8−2.2 Up to 0,5 10.74−18.73 15−17 19−21 Up to 0.02 Up to 0.02 39−41
Mechanical properties (at 20 ° C)
Name of the characteristic The numerical value of the parameter for the products

Thinning tape


(0.1 to 2 mm)

Short-term tensile strength, MPa (ss) 3200−3800 1670 2450−2650
Yield strength, MPa (sT) 2400−3000

Heat treatment Aging at a temperature of 400−450 ° C, for four hours and quenching at a temperature of 1100 to 1150 degrees with oil Aging at a temperature of 450 to 550 degrees Celsius for four hours

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 a bargain price

Our site offers a wide range of products from precision materials. High quality products and the absence of intermediaries (working directly with the manufacturer) determine the most profitable proposals for the acquisition of such material as 40KhNM alloy for solving any problems of modern industry. Delivery in a short time in any region of the country and abroad, compliance products normative documents have long won the trust of regular customers. Due to the relatively low cost and wide range and model range of semi-finished products, the material enjoys constant popularity in all spheres of production.