• Uncompromising quality

  • Uncompromising quality

  • Uncompromising quality

  • Uncompromising quality

  • Uncompromising quality

  • Uncompromising quality

AISI 4140 (SAE-AISI 4140)

 

CORRESPONDENCE TO INTERNATIONAL DESIGNATIONS

QUALITY EUROPE GERMANY FRANCE SPAIN G.B. USA
EN DIN W.n. AFNOR UNE B.S. AISI/SAE
4140     1,7225     708M40 4140

CHEMICAL ANALYSIS %

STEEL DESIGNATION CHEMICAL ANALYSIS
SYMBOLIC NUMERIC C Mn Si P
max
S
max
Cr Mo Ni V
AISI 4140 1,7225 0,38 ÷ 0,43 0,75 ÷ 1,00 0,15 ÷ 0,35 0,035 0,040 0,80 ÷ 1,10 0,15 ÷ 0,25 - -

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

MECHANICAL CHARACTERISTICS

STEEL NORMALISATION TEMPERATURE 900°C MIN – TEMPERING TEMPERATURE 620°C MIN
SYMBOLIC NUMERICA Re min Rm min  A min Z min Durezza HB KV a -46°C min
N/mm2 % % max J
AISI 4140 1,7225 520 677 20 45 237 27

USUALLY AVAILABLE EX STOCK

M.T. COLORATION QUALITY HEAT TREATMENT SURFACE DIAMETER (mm)
Aisi 4140 Quenched and tempered rolled 30-300

 

 
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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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