• Uncompromising quality

  • Uncompromising quality

  • Uncompromising quality

  • Uncompromising quality

  • Uncompromising quality

  • Uncompromising quality

chiusura estiva dal 6 al 24 agosto compresi

31CrMoV10 (UNI 8077)

 

CORRESPONDENCE TO INTERNATIONAL DESIGNATIONS

QUALITY EUROPE GERMANY FRANCE SPAIN G.B. USA
EN DIN W.n. AFNOR UNE B.S. AISI/SAE
31CrMoV10 31CrMoV10            

CHEMICAL COMPOSITION % (UNI 8077)

STEEL DESIGNATION CHEMICAL COMPOSITION
SYMBOLIC NUMERIC C Si Mn P
max
S
max
Cr Mo Ni V
31CrMoV10   0,29 ÷ 0,34 0,15 ÷ 0,40 0,40 ÷ 0,70 0,030 0,035 2,30 ÷ 2,80 0,30 ÷ 0,40 - 0,10 ÷ 0,20

CONCENTRATION LIMITS OF THE ELEMENTS THAT ARE NOT INDICATED IN THE TABLE CAN BE DEDUCED IN THE EN 10020 REGULATION.

MECHANICAL CHARACTERISTICS (UNI 8077)

STEEL 16mm < d ≤ 40mm 40mm < d ≤ 100mm 100mm < d ≤ 160mm
SYMBOLIC NUMERIC Re min Rm A min KCU Re min Rm A min KCU Re min Rm A min KCU
N/mm2 % J N/mm2 % J N/mm2 % J
31CrMoV10   785 930 to
1080
13 31,5 735 885 to
1030
14 32 710 835 to
980
15 32

JOMINY HARDENABILITY (UNI 8077)

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
31CrMoV10   max 55 55 55 55 55 55 55 55 54,5 54 54 53,5 53
min 48 47,5 47 47 46,5 46 45,5 45,5 45 44,5 44 43,5 43

USUALLY AVAILABLE EX STOCK

M.T. COLORATION QUALITY HEAT TREATMENT SURFACE DIAMETER (mm)
  31CrMoV10 Quenched and tempered, stress relieved rolled peeled 30-250

 

 
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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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