Home » Steels » Hot work creep steels (ASTM A182) » F11 class 1, 2, 3 Normalized Tempered (+NT) / Annealed (+A)
Uncompromising quality
Uncompromising quality
Uncompromising quality
Uncompromising quality
Uncompromising quality
Uncompromising quality
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F11 classe 1, 2, 3 [ASTM A182] Normalized Tempered (+NT) / Annealed (+A)
F11 (13CrMo4-5) IS A MILD STEEL WITH CHROME, VERY TOUGH, IT CAN BE CASE-HARDENED, IT CAN BE WELDED AND IT IS RESISTANT TO CREEP 550°C. IT IS USED FOR THE FABRICATION OF TUBES, BOILERS AND SUPERHEATERS OR FOR THE TRANSPORTATION OF OVERHEATED STEAM WITH A HIGH PRESSURE. IT IS EASILY MACHINABLE, EVEN AT THE RAW STATE OF ROLLING OR NORMALISED.
CORRESPONDENCE TO INTERNATIONAL DESIGNATIONS
| QUALITY | EUROPE | GERMANY | FRANCE | SPAIN | G.B. | USA | |
|---|---|---|---|---|---|---|---|
| EN | DIN | W.n. | AFNOR | UNE | B.S. | ASTM | |
| F11 | 13CrMo4-5 | 13CrMo4-4 | 1,7338 | ~ 10CD6 | F2631 | 621 | ASTM A182 F11 ASME SA 182 |
CHEMICAL ANALYSIS
| C | Mn | Si | P max |
S max |
Cr | Mo | Cu max |
|---|---|---|---|---|---|---|---|
| 0,10 ÷ 0,20 | 0,30 ÷ 0,80 | 0,50 ÷ 1,00 | 0,040 | 0,040 | 1,00 ÷ 1,50 | 0,44 ÷ 0,65 | 0,35 |
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 | |||
| F11 | 275 | 485 | 20 | 30 | 143÷207 | |
USUALLY AVAILABLE EX STOCK
| M.T. COLORATION | QUALITY | HEAT TREATMENT | SURFACE | DIAMETER (mm) |
|---|---|---|---|---|
 |
F11 | Normalised and stress relieved | rolled / forged turned | 20-450 |
 |
F11 | Annealed | rolled | 20-220 |
 |
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.