• Uncompromising quality

  • Uncompromising quality

  • Uncompromising quality

  • Uncompromising quality

  • Uncompromising quality

  • Uncompromising quality

 

CORRESPONDENCE TO INTERNATIONAL DESIGNATIONS

QUALITY EUROPE GERMANY FRANCE SPAIN G.B. USA
EN DIN W.n. AFNOR UNE B.S. AISI/SAE
ASTM A350 - LF2 S355J2G3~ St52.3~       EN50D LF2

CHEMICAL ANALYSIS (ASTM A350M-07)

STEEL DESIGNATION CHEMICAL COMPOSITION
SYMBOLIC C
max		 Mn Si P
max		 S
max		 Cr
max		 Mo
max		 Cu
max		 Ni
max		 V
max		 Nb
max
ASTM A350 - LF2 0,30 0,60 ÷ 1,35 0,15 ÷ 0,30 0,035 0,040 0,30 0,12 0,40 0,40 0,08 0,02

MECHANICAL CHARACTERISTICS (ASTM A350M-07)

STEEL  
SYMBOLIC NUMERIC Re min Rm A min Z min Kv -46°C cl.1
N/mm2 % % J
ASTM A350 - LF2   250 485 ÷
655		 22 30 27

USUALLY AVAILABLE EX STOCK

M.T. COLORATION QUALITY HEAT TREATMENT SURFACE DIAMETER (mm)
  ASTM A350 - LF2 Normalised rolled
peeled h13
forged turned		 40-300
90-280
300-530

 

 
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CORRESPONDENCE TO INTERNATIONAL DESIGNATIONS

QUALITY EUROPE GERMANY FRANCE SPAIN G.B. USA
EN DIN W.n. AFNOR UNE B.S. AISI/SAE
AISI 4130 25/30CrMo4   1.7218     708A25 4130

CHEMICAL ANALYSIS

STEEL DESIGNATION CHEMICAL ANALYSIS
SYMBOLIC C Mn Si P
max		 S
max		 Cr Mo V Al
max
AISI 4130 0,28 ÷ 0,33 0,40 ÷ 0,60 0,15 ÷ 0,35 0,035 0,040 0,60 ÷ 1,10 0,15 ÷ 0,25 - -

MECHANICAL CHARACTERISTICS

STEEL d ≤ 16mm 16mm < d ≤ 40mm 40mm < d ≤ 100mm 100mm < d ≤ 160mm
SYMBOLIC NUMERIC Re min Rm A min KCU min Re min Rm A min KCU min Re min Rm A min KCU min Re min Rm A min KCU min
N/mm2 % J N/mm2 % J N/mm2 % J N/mm2 % J
AISI 4130 1,7218 685 880 ÷
1080		 12 32,5 635 830 ÷
1030		 12 32,5 520 740 ÷
880		 13 30 420 690 ÷
830		 15 30

JOMINY HARDENABILITY

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
AISI 4130 1.7218 max 56 55 53 51 49 47 45 42 39

37

 35 33 32
min 46 45 42 38 35 30 28 26 24 23 21 20 -

USUALLY AVAILABLE EX STOCK

M.T. COLORATION QUALITY HEAT TREATMENT SURFACE DIAMETER (mm)
  AISI 4130 Quenched and tempered rolled 80-350

 

 
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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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CORRESPONDENCE TO INTERNATIONAL DESIGNATIONS

QUALITY EUROPE GERMANY FRANCE SPAIN G.B. USA
EN DIN W.n. AFNOR UNE B.S. AISI/SAE
B16 40CrMoV4-6 40CrMoV4-6   40CrMoV4-6   1506-661 ASTM-A193 B16

CHEMICAL ANALYSIS (ASTM A193)

STEEL DESIGNATION CHEMICAL COMPOSITION
SYMBOLIC C Mn Si P
max		 S
max		 Cr Mo V Al
max
B16 0,36 ÷ 0,47 0,45 ÷ 0,70 0,15 ÷ 0,35 0,035 0,040 0,80 ÷ 1,15 0,50 ÷ 0,65 0,25 ÷ 0,35 0,015

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 Re min Rm min  A min Z min Hardness HB max
N/mm2 % % J
B16 655 760 17 45 321

USUALLY AVAILABLE EX STOCK

M.T. COLORATION QUALITY HEAT TREATMENT SURFACE DIAMETER (mm)
B16 (40CrMoV4-6) Quenched and tempered rolled 70-150

 

 
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Subcategories

Hot work creep steels (ASTM A182)

HOT WORK CREEP STEELS ARE STEELS THAT HAVE TO RESIST PLASTIC DEFORMATION OVER TIME AT HIGH TEMPERATURES (FROM 350° TO 700°C). THESE STEELS ARE EMPLOYED FOR THE CONSTRUCTION OF VALVES, FLANGES, TIE RODS, TUBES, PLATES ETC. FOR THE CHEMICAL INDUSTRY, PETROCHEMICAL INDUSTRY, THERMAL AND NUCLEAR POWER PLANTS, OVERHEATED STEAM CONVEYORS, ROTORS AND PIPINGS THAT TRANSPORT HOT FLUIDS UNDER PRESSURE. THE SPECIFIC EMPLOYMENTS OF THESE STEELS REQUIRE AN ELEVATED WELDABILITY, FOR THIS REASON THEY ALL HAVE A LOW CARBON CONTENT (MAX. 0,20%).

WE CAN PROVIDE FORGED PARTS WITH SPECIFIC DESIGN UP TO 1000 KG OF WEIGHT WITH MAXIMUM Ø 700 MM.

 

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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