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.
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 |
CORRESPONDENCE TO INTERNATIONAL DESIGNATIONS
| QUALITY | EUROPE | GERMANY | FRANCE | SPAIN | G.B. | USA | |
|---|---|---|---|---|---|---|---|
| EN | DIN | W.n. | AFNOR | UNE | B.S. | ASTM | |
| F9 | X12CrMo9-1 | 12CrMo9-1 | 1.7386 | - | - | - | ASTM A182 F9 ASME SA 182 |
CHEMICAL ANALYSIS
| C max | Mn | Si | P max | S max | Cr | Ni | Mo | Cu max |
|---|---|---|---|---|---|---|---|---|
| 0,15 | 0,30 ÷ 0,60 | 0,50 ÷ 1,00 | 0,030 | 0,030 | 8,00 ÷ 10,00 | - | 0,90 ÷ 1,10 | 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 | |||
| F9 | 380 | 585 | 20 | 40 | 179÷217 | |
USUALLY AVAILABLE EX STOCK
| M.T. COLORATION | QUALITY | HEAT TREATMENT | SURFACE | DIAMETER (mm) |
|---|---|---|---|---|
 |
F9 | Normalised and stress relieved | rolled / forged turned | 25-400 |
 |
F9 | Annealed |
rolled billet |
25-380 |
|
Download technical sheet |
F5 (12CrMo19-5), IS AN ALLOY STEEL WITH CHROME THAT HAS ELEVATED MECHANICAL CHARACTERISTICS AND IT IS SUITABLE FOR THE FABRICATION OF PARTS OF INSTALLATIONS THAT REQUIRE AN EXCELLENT RESISTANCE TO EMBRITTLEMENT UNDER PRESSURE AND AT 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 | |
| F5 | 12CrMo19-5 | ~ 12CrMo19-5 | 1,7362 | ~ Z15CD5-05 | - | 625-520 |
ASTM A182 F5 ASME SA 182 |
CHEMICAL ANALYSIS
|
C max |
Mn |
Si max |
P max |
S max |
Cr |
Ni max |
Mo |
Cu max |
|---|---|---|---|---|---|---|---|---|
| 0,15 | 0,30 ÷ 0,60 | 0,50 | 0,030 | 0,030 | 4,00 ÷ 6,00 | 0,50 | 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 | |||
| F5 | 275 | 485 | 20 | 35 | 143÷217 | |
USUALLY AVAILABLE EX STOCK
| M.T. COLORATION | QUALITY | HEAT TREATMENT | SURFACE | DIAMETER (mm) |
|---|---|---|---|---|
 |
F5 | Normalised and stress relieved | rolled / forged turned | 20-400 |
 |
F5 | Annealed | rolled / forged | 20-360 |
|
|
Download technical sheet |
F22 cl.3 (102CrMo9-10), IS THE MOST COMMONLY USED FOR THE APPLICATIONS WHERE IT IS REQUIRED A GOOD RESISTANCE TO CREEP UP TO 600°C, FOR EXAMPLE IN THERMAL AND NUCLEAR POWER PLANTS AND FOR ROTORS OR PIPINGS THAT TRANSPORT HOT FLUIDS UNDER PRESSURE.
CORRESPONDENCE TO INTERNATIONAL DESIGNATIONS
| QUALITY | EUROPE | GERMANY | FRANCE | SPAIN | G.B. | USA | |
|---|---|---|---|---|---|---|---|
| EN | DIN | W.n. | AFNOR | UNE | B.S. | ASTM | |
| F22 cl.3 | 10CrMo9-10 EN 10222-2 | ~ 10CrMo9-10 | 1,7380 | ~ 12CD9-10 | F2632 | 622-515 |
ASTM A182 F22 ASME SA 182 |
CHEMICAL ANALYSIS
| C | Mn |
Si max |
P max |
S max |
Cr | Mo |
|---|---|---|---|---|---|---|
| 0,05 ÷ 0,15 | 0,30 ÷ 0,60 | 0,50 | 0,040 | 0,040 | 2,00 ÷ 2,50 | 0,87 ÷ 1,13 |
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 | |||
| F22 | 310 | 515 | 20 | 30 | 156÷207 | |
USUALLY AVAILABLE EX STOCK
| M.T. COLORATION | QUALITY | HEAT TREATMENT | SURFACE | DIAMETER (mm) |
|---|---|---|---|---|
 |
F22 cl.3 | Normalised and stress relieved | rolled / forged turned | 40-400 |
 |
F22 cl.3 | Annealed | rolled | 40-220 |
|
|
Download technical sheet |
F11 class 1, 2, 3 (~1.7338)
ASTM A182
Normalized Tempered (+NT) / Annealed (+A)
ASTM A182 Alloy Steel grade F11 is a chromium-molybdenum alloy steel widely utilized across critical industries, including oil and gas, petrochemical, chemical processing, and power generation. Its primary applications lie in high-pressure and high-temperature environments, making it essential for components within oil and gas pipelines, steam boilers, pressure vessels, heat exchangers, and other critical equipment requiring robust performance. 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.
A key advantage of ASTM A182 Alloy Steel grade F11 is its combination of high strength and excellent corrosion resistance. The specific alloying elements, notably chromium and molybdenum, contribute to its high resistance to oxidation and sulfidation at elevated temperatures, ensuring long-term reliability in demanding conditions.
CORRESPONDENCE TO INTERNATIONAL DESIGNATIONS
| QUALITY | EUROPE | GERMANY | FRANCE | SPAIN | G.B. | USA | |
|---|---|---|---|---|---|---|---|
| EN | DIN | W.n. | AFNOR | UNE | B.S. | ASTM | |
| F11 class 1,2,3 | ~13CrMo4-5 | ~13CrMo4-4 | ~1.7338 | ~ 10CD6 | F2631 | 621 | ASTM A182 F11 ASME SA 182 |
CHEMICAL ANALYSIS % (ASTM A182)
| 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 (ASTM A182)
| 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 class 1,2,3 | 275 | 485 | 20 | 30 | 143÷207 | |
USUALLY AVAILABLE on STOCK
| M.T. COLORATION | QUALITY | HEAT TREATMENT | SURFACE | DIAMETER (mm) |
|---|---|---|---|---|
|
F11 | Normalised and stress relieved (+NT) | rolled / forged turned | 20-450 |
 |
F11 | Annealed (+A) | rolled | 20-220 |