• Uncompromising quality

  • Uncompromising quality

  • Uncompromising quality

  • Uncompromising quality

  • Uncompromising quality

  • Uncompromising quality

chiusura estiva dal 6 al 24 agosto compresi

20MnCr5 (UNI EN 10084)

 

PROPERTIES AND EMPLOYEMENTS
IT IS SIMILAR TO 16MnCr5, BUT IT IS MORE HARDENING AND IT CAN ALSO HAVE GOOD CHARACTERISTICS FOR WHAT CONCERNS THE CENTRE, UP TO A DIAMETER OF MORE OR LESS MM 50.

 

CORRESPONDENCE TO INTERNATIONAL DESIGNATIONS

QUALITY EUROPE GERMANY FRANCE SPAIN G.B. USA
EN DIN W.n. AFNOR UNE B.S. AISI/SAE
20MnCrS5 20MnCrS5 20MnCrS5 1.7147 20MC5      

CHEMICAL COMPOSITION % (EN 10084)

STEEL DESIGNATION CHEMICAL COMPOSITION
SYMBOLIC NUMERIC C Si
max
Mn P
max
S Cr Mo Ni B
20MnCr5 1,7147 0,17 ÷ 0,22 0,40 1,10 ÷ 1,40 0,025 ≤ 0,035 1,00 ÷ 1,30 - - -
20MnCrS5 1,7149 0,020 ÷ 0,040

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

MECHANICAL CHARACTERISTICS (UNI 7846)

STEEL QUALITY BAR'S DIAMETER TENSILE TESTING IMPACT STRENGTH
KCU min
UNIFIED TENSILE STRENGTH
R
DEVIATION FROM PROPORTIONALITY
Rp 0,2 min
ELONGATION
A min
mm N/mm2 kgf/mm2 N/mm2 kgf/mm2 % J
20MnCr5 11
(30)
(63)
1230÷1520
(930÷1230)
(780÷1080)
125÷160
(95÷125)
(80÷110)
930
(690)
(540)
95
(70)
(55)
7
(8)
(9)
17,5
(20)
(25)

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
20MnCr5+H 1,7147+H max 49 49 48 46 43 42 41 39 37 35 34 33 32
20MnCrS5+H 1,7149+H min 41 39 36 33 30 28 26 25 23 21 - - -
20MnCr5+HH 1,7147+HH max 49 49 48 46 43 42 41 39 37 35 34 33 32
20MnCrS5+HH 1,7149+HH min 44 42 40 37 34 33 31 30 28 26 25 24 23
20MnCr5+HL 1,7147+HL max 46 46 44 42 39 37 36 34 32 30 29 28 27
20MnCrS5+HL 1,7149+HL min 41 39 36 33 30 28 26 25 23 21 - - -

USUALLY AVAILABLE EX STOCK

M.T. COLORATION QUALITY HEAT TREATMENT SURFACE DIAMETER (mm)
20MnCr5 Soft-annealed rolled
forged turned
drawn / peeled h11
20-300
310-490
16-80
20MnCr5
high machinability
Annealed rolled
peeled
30-200
28-80

 

 
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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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