Uncompromising quality
Uncompromising quality
Uncompromising quality
Uncompromising quality
Uncompromising quality
Uncompromising quality
chiusura estiva / summer closing: 05-26 Agosto/August
F91 (ASTM A182)
F91 (X10CrMoVNb9-1), IS AN ALLOY STEEL WITH CHROME AND AN ADDITION OF NB, WHICH HAS ELEVATED MECHANICAL CHARACTERISTICS AND IT IS VERY OFTEN USED IN THE CHEMICAL AND PETROCHEMICAL INDUSTRIES FOR THE FABRICATION OF FLANGES, VALVES, TUBES AND FOR EQUIPMENTS THAT REQUIRE AN EXCELLENT CREEP RESISTANCE AND TO EMBRITTLEMENT BECAUSE OF HYDROGEN UNDER PRESSURE AND AT AN ELEVATED TEMPERATURE (UP TO 600°C).
CORRESPONDENCE TO INTERNATIONAL DESIGNATIONS
| QUALITY | EUROPE | GERMANY | FRANCE | SPAIN | G.B. | USA | |
|---|---|---|---|---|---|---|---|
| EN | DIN | W.n. | AFNOR | UNE | B.S. | ASTM | |
| F91 | X10CrMoVNb9-1 | X10CrMoVNb9-1 | 1,4903 | - | - | - |
ASTM A182 F91 ASME SA 182 |
CHEMICAL ANALYSIS
| C | Mn | Si |
P max |
S max |
Cr |
Ni max |
Mo |
Zr max |
Al | N | Nb | V |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0,08 ÷ 0,12 | 0,30 ÷ 0,60 | 0,20 ÷ 0,50 | 0,020 | 0,010 | 8,00 ÷ 9,50 | 0,40 | 0,85 ÷ 1,05 | 0,01 | 0,020 | 0,03 ÷ 0,07 | 0,06 ÷ 0,10 | 0,10 ÷ 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 | Re min | Rm min | A min | Z min | Durezza HB | |
| N/mm2 | % | % | max | |||
| F91 | 415 | 620 | 20 | 40 | 190÷248 | |
USUALLY AVAILABLE EX STOCK
| M.T. COLORATION | QUALITY | HEAT TREATMENT | SURFACE | DIAMETER (mm) |
|---|---|---|---|---|
 |
F91 | Normalised and stress relieved | rolled peeled / forged turned | 30-400 |
 |
F91 | Annealed | rolled | 30-220 |
 |
Download technical sheet |
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.
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.
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.