• Uncompromising quality

  • Uncompromising quality

  • Uncompromising quality

  • Uncompromising quality

  • Uncompromising quality

  • Uncompromising quality

chiusura estiva dal 6 al 24 agosto compresi

34CrAlNi7 (UNI 8077)

 

PROPERTIES AND EMPLOYEMENTS
THIS STEEL HAS AN ELEVATED HARDENABILITY, DISCREET TOUGHNESS AND IT IS SUITABLE FOR THE CONSTRUCTION OF BIG PARTS THAT ARE SUBMITTED TO ELEVATED DYNAMIC STRESSES. IT HAS THE BEST MACHINABILITY AMONG NITRIDING STEELS THAT CONTAIN ALUMINIUM. FOR THIS REASON IT IS PREFERRED OVER OTHER NITRIDING STEELS, BECAUSE AN ESSENTIAL CHARACTERISTIC IS THE TOUGHNESS OF NITRITED LAYERS AT ELEVATED HARDNESS (GUARANTEED BY ALUMINIUM).

 

 

CORRESPONDENCE TO INTERNATIONAL DESIGNATIONS

QUALITY EUROPE GERMANY FRANCE SPAIN G.B. USA
EN DIN W.n. AFNOR UNE B.S. AISI/SAE
34CrAlNi7 34CrAlNi7-10 34CrAlNi7 1,8550       K52440

CHEMICAL COMPOSITION % (UNI 8077)

STEEL DESIGNATION CHEMICAL COMPOSITION
SYMBOLIC NUMERIC C Si
max
Mn P
max
Sb
max
Al Cr Mo Ni V
34CrAlNi7-10 1,8550 0,30 ÷ 0,37 0,40 0,40 ÷ 0,70 0,025 0,035 0,80 ÷ 1,20 1,50 ÷ 1,80 0,15 ÷ 0,25 0,85 ÷ 1,15 -

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 160mm < d ≤ 250mm HV1b
SYMBOLIC NUMERIC Re min Rm A min KV min Re min Rm A min KV min Re min Rm A min KV min Re min Rm A min KV min
N/mm2 % J N/mm2 % J N/mm2 % J N/mm2 % J
34CrAlNi7-10 1,8550 680 900 to
1100
10 30 650 850 to
1050
12 30 600 800 to
1000
13 35 600 800 to
1000
13 35 950

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
34CrAlNi7-10 1,8550 max 60 59 58 57 56,5 56 55,5 55 53,5 52,5 51 49 47,5
min 49 48 47 46,5 45,5 44 43,5 42 39 37 35 34 33

USUALLY AVAILABLE EX STOCK

M.T. COLORATION QUALITY HEAT TREATMENT SURFACE DIAMETER (mm)
34CrAlNi7 Quenched and tempered, stress relieved rolled peeled 130-250

 

 
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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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