Non-magnetic steel RSNM140


The measures taken by the company "Roteishn technology", for the modernization of the technological process of production of non-magnetic steel:

  1. Strict control of chemical composition of the material, especially the ratio of the elements C, Cr, Mn, N, etc. It is possible to increase the mechanical properties of the material and ensure a low and stable level of magnetic properties of steel. For steel production are used special furnaces and furnaces for fire refining AOD.
  2. Use in the production of non-magnetic steel forging machine with a diameter 1800T, technology application hot forging, strict control of temperature and degree of deformation during forging, which ensures high corrosion resistance.
  3. The use of special mechanical processing, the use of modern mechanical equipment and digital technology, full compliance with the requirements of mechanical precision.

The company produces the following types of steel:

  • Non-magnetic steel brand RSNM110 (analog steel P530 brand Bleckmann)
  • Non-magnetic steel brand RSNM140 (analog steel brand Bleckmann P550 P530)


Produced by the non-magnetic drill pipe fully meet the standards of the oilfield services companies Baker Hughes and Schlumberger.

Non-magnetic steel brand RSNM140

Characteristics and chemical composition of non-magnetic steel grade RSNM140

Mark C Si Mn P S Cr Ning> Mo N Nb Cu Al
DWNM102 0.03 0.40-0.60 16.00-20.00 0.01 0.005 15.00-18.00 0.60-2.00 0.50-2.00 0.50-0.70 0.08 0.20 0.025

Mechanical properties of non-magnetic steel grade RSNM140

Nominal diameter, mm Yield strength RP0.2 Tensile strength Rm Elongation A The shrinkage factor Z Impact strength AkV Hardness
No more than ∅180 966 140 1035 150 20 50 100 300-425
More ∅180</strong> 897 130 1000 145 20 50 100 300-425

Relative magnetic permeability μr

The magnetic field gradient ΔB≤0.04 µt