• Uncompromising quality

  • Uncompromising quality

  • Uncompromising quality

  • Uncompromising quality

  • Uncompromising quality

  • Uncompromising quality

chiusura estiva dal 6 al 24 agosto compresi

18CrNiMo7-6 (UNI EN 10084)

 

PROPERTIES AND EMPLOYEMENTS
IT IS A CASE-HARDENING STEEL THAT IS SIMILAR TO 17NICRMO6-4, BUT IT HAS A MORE ELEVATED HARDENABILITY, BECAUSE OF THE HIGHER CONTENT OF CHROMIUM AND MANGANESE. IT IS SUITABLE FOR THICK PARTS OR WITH AN ELEVATED DIAMETER, WHICH REQUIRE A HIGH RESISTANCE AND TOUGHNESS AT HEART, AFTER CASE-HARDENING, HARDENING AND STRESS RELIEF TEMPERING.

 

 

CORRESPONDENCE TO INTERNATIONAL DESIGNATIONS

QUALITY EUROPE GERMANY FRANCE SPAIN G.B. USA
EN DIN W.n. AFNOR UNE B.S. AISI/SAE
18CrNiMo7-6 18CrNiMo7-6   1.6587        

CHEMICAL COMPOSITION % (EN 10084)

STEEL DESIGNATION CHEMICAL COMPOSITION
SYMBOLIC NUMERIC C Si
max
Mn P
max
S
max
Cr Mo Ni B
18CrNiMo7-6 1,6587 0,15 ÷ 0,21 0,40 0,50 ÷ 0,90 0,035 0,035 1,50 ÷ 1,80 0,25 ÷ 0,35 1,40 ÷ 1,70 -

CONCENTRATION LIMITS OF THE ELEMENTS THAT ARE NOT INDICATED IN THE TABLE CAN BE DEDUCED IN THE EN 10020 REGULATION. IT CAN BE PROVIDED WITH AN ADDITION OF LEAD 0,12-0,35% OR SULPHUR CONTROLLED UP UNTIL 0,40% FOR AN IMPROVED MACHINABILITY.

JOMINY HARDENABILITY (EN 10084)

STEEL DESIGNATION RANGE LIMITS HRC HARDNESS MEASURED FROM THE QUENCHED END OF THE TEST TUBE (MM)
SYMBOLIC NUMERIC 1,5 3 5 7 9 11 13 15 20 25 30 35 40
18CrNiMo7-6+H 1,6587 max 48 48 48 48 47 47 46 46 44

43

42 41 41
min 40 40 39 38 37 36 35 34 32 31 30 29 29

USUALLY AVAILABLE EX STOCK

M.T. COLORATION QUALITY HEAT TREATMENT SURFACE DIAMETER(mm)
  18CrNiMo7-6 Soft-annealed rolled
forged turned
30-300
310-520

 

 
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Steels

Our steel always comes from the same European steelworks, which guarantee a continuity for what concerns quality. The constant quality of the supplies allows to have repetitive parameters in mechanical processing and a greater control over deformations during heat treatment.

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Machining

Precise cuttings of small and big series are guaranteed by the employement of latest generation automatic saws that were projected and realized in order to guarantee precision standards required by customers, reducing processing wastage.

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Quality

The certification and introduction of the Quality System management allowed M.T.Acciai to improve not only its efficiency, but also the quality that is offered, in order to better meet our customers’ needs.

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