ASTM A182 F92 Ultra-Supercritical Advanced Ferritic Steel Flanges Manufacturer & Supplier
Metinox Overseas is predominantly involved in the production and supply of ASTM A182 F92 Advanced Ferritic Steel Flanges, which is the highest grade of ultra-supercritical (USC) and advanced ultra-supercritical (A-USC) type of power plants that need the maximum possible creep strength and oxidation capability at the highest levels of temperature. The materials of our ASME SA182 F92 Forged Flanges are of high quality modified 9Cr-2Mo-V-Nb-W (9% Chromium -2% Molybdenum -Vanadium -Niobium- Tungsten) ultra-high-temperature ferritic steel which has controlled chemical composition containing chromium (8.50-9.50%), molybdenum (1.30-1.70%), tungsten (1.50-2.00%), vanadium (0.15-0.25%), niobium (0.04-0.09%) and nitrogen (0.030-0.070%), specifically designed to provide superior creep strength through the precipitation strengthening (VN, NbC precipitates) and solid-solution strengthening with tungsten. These 9Cr-2Mo A182 F92 Flanges are especially crafted as ultra-high-temperature creep service -29-C (-20-F) to 620-649-C (1150-1200-F), which makes them optimal in ultra-supercritical power plant main steam piping at 600-620-C, in advanced USC boiler superheater /reheater header service, in next-generation high-efficiency combined cycle power plants, in advanced refinery hydrocracking units, and in all applications requiring superior creep rupture strength beyond F91 capabilities.
Tungsten (1.5- 2.0 %) addition to the modified composition of 9Cr- 1Mo- V- Nb has brought about a dramatic increase in creep strength due to the solid solution strengthening and the formation of stable M23C6 carbides, enabling F92 to be used 20-40-C higher than F91. We have ASTM A182 F92 Weld Neck Flanges, Slip-On Flanges, Blind Flanges, Socket Weld Flanges, that have been produced to ANSI/ASME B16.5 (1/2 to 24 NB) and ASME B16.47 Series A and B (26 to 60 NB) dimensional requirements, with pressure classes up to 150 to 2500 #. Both flanges are subjected to a required heat treatment -normalizing and tempering with an exceptionally tight process control (-5-C)-and rigorous quality testing, including dimensional inspection, PMI inspection, tensile testing, Charpy impact testing, creep testing when required, hardness testing, metallographic inspection and ultrasonic inspection in compliance with ASTM A961 requirements.
Table of Contents
- ASTM A182 F92 Flanges Technical Specifications
- ASTM A182 F92 Equivalent Grades
- ASTM A182 F92 Chemical Composition
- Mechanical Properties of ASTM A182 F92 Flanges
- ASTM A182 F92 Flange Dimensions & Pressure Rating Chart
- Types of ASTM A182 F92 Flanges Available
- Standard Flange Sizes & Weight Chart
- Is ASTM A182 F92 Good Quality for Ultra-Supercritical Power Plants?
- Heat Treatment Requirements (Mandatory - Extremely Strict Control)
- ASTM A182 F92 Ultra-Supercritical Flanges Price List 2026
- Applications of ASTM A182 F92 Flanges in Industry
- Why Choose ASTM A182 F92 Flanges from Metinox Overseas?
- ASTM A182 F92 Flange Delivery Time & CIF Pricing by Country
- Other Types of Ultra-Supercritical A182 F92 Flanges
- Popular Locations Where We Supply ASTM A182 F92 Flanges
- Frequently Asked Questions (FAQ)
ASTM A182 F92 Flanges Technical Specifications
| Feature | Details |
| Specifications | ASTM A182 / ASME SA182 / MSS SP-44 |
| Grade | F92 (Next-Generation CSEF - Creep Strength Enhanced Ferritic) |
| Material Designation | Modified 9Cr-2Mo-V-Nb-W (9Cr-2Mo-Vanadium-Niobium-Tungsten) |
| UNS Number | K92460 |
| Dimensional Standards | ANSI/ASME B16.5, B16.47 Series A & B, B16.48, MSS SP-44 |
| Size Range | 1/2" (15 NB) to 60" (1500 NB) |
| Pressure Class | 150#, 300#, 400#, 600#, 900#, 1500#, 2500# (B16.5); 75#, 150#, 300#, 400#, 600#, 900# (B16.47) |
| Flange Types | Weld Neck, Slip-On, Blind, Socket Weld, Lap Joint, Threaded, Orifice, Long Weld Neck, Reducing |
| Flange Face | Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ), Male & Female, Tongue & Groove |
| Manufacturing Type | Hot Forged |
| Microstructure | Tempered Martensite with Fine Precipitates (VN, NbC, M23C6) |
| Heat Treatment | Normalized & Tempered (Mandatory, Extremely Strict Control -5-C) |
| Testing | Tensile, Hardness, Impact, PMI, Metallography, Grain Size, Creep (optional), Ultrasonic |
| Inspection | Third Party Inspection by TUV, SGS, Bureau Veritas, Lloyd's, DNV GL, BV, ABS |
| Certifications | EN 10204 3.1B MTC, NACE MR0175, PED 2014/68/EU, CE Marked, ASME B31.1, B31.3 |
ASTM A182 F92 Equivalent Grades
| STANDARD | USA | GERMANY | EUROPE | JAPAN | INDIA | UK | CHINA |
| A182 F92 | ASTM A182 F92 ASME SA182 F92 UNS K92460 |
1.4901 | X10CrWMoVNb9-2 X10CrWMoVNb9-2 EN 10222-2 |
- | - | - | - |
ASTM A182 F92 Chemical Composition
The detailed composition of this material is given in the following table.
| Element | Composition (%) | Function |
| Carbon (C) | 0.07 - 0.13 | Controlled for strength and toughness balance |
| Manganese (Mn) | 0.30 - 0.60 | Hardenability |
| Phosphorus (P) | 0.020 max | Strictly controlled for toughness |
| Sulfur (S) | 0.010 max | Minimized for ductility and toughness |
| Silicon (Si) | 0.50 max | Oxidation resistance |
| Chromium (Cr) | 8.50 - 9.50 | Oxidation/corrosion resistance, creep strength |
| Molybdenum (Mo) | 1.30 - 1.70 | High-temp strength, creep resistance (higher than F91) |
| Tungsten (W) | 1.50 - 2.00 | Critical element - solid solution strengthening, M23C6 carbides |
| Vanadium (V) | 0.15 - 0.25 | Forms VN precipitates for creep strength |
| Niobium (Nb) | 0.04 - 0.09 | Forms NbC precipitates for creep strength |
| Nitrogen (N) | 0.030 - 0.070 | Forms VN with vanadium for precipitation strengthening |
| Nickel (Ni) | 0.40 max | Toughness |
| Aluminum (Al) | 0.04 max | Deoxidizer, grain refinement |
| Boron (B) | 0.001 - 0.006 | Grain boundary strengthening, creep enhancement |
Note: W (tungsten) addition is the defining characteristic of F92, providing superior creep strength vs F91. Mo increased from F91's 0.85-1.05% to 1.30-1.70% for enhanced high-temperature performance.
Mechanical Properties of ASTM A182 F92 Flanges
The mechanical properties decide the shelflife of the material. The table below gives the information about the mechanical properties of ASTM A182 F92 Flanges.
| Property | Requirement | Testing Standard |
| Tensile Strength | 620 MPa (90 ksi) minimum | ASTM A370 |
| Yield Strength (0.2% offset) | 440 MPa (64 ksi) minimum | ASTM A370 |
| Elongation in 2" | 20% minimum | ASTM A370 |
| Reduction of Area | 40% minimum | ASTM A370 |
| Hardness (Brinell) | 175-265 HB (typical 220-250 HB) | ASTM E10 |
| Charpy V-Notch Impact | 41 J min at 20-C (commonly specified) | ASTM A370 |
Note: F92 provides approximately 30-50% better creep rupture strength than F91 at 600-620-C, enabling higher steam temperatures in USC power plants.
ASTM A182 F92 Flange Dimensions & Pressure Rating Chart
Pressure-Temperature Ratings for A182 F92 Flanges
| Temperature -F (-C) | Class 150 | Class 300 | Class 600 | Class 900 | Class 1500 | Class 2500 |
|---|---|---|---|---|---|---|
| -20 to 100 (-29 to 38) | 285 psi | 740 psi | 1480 psi | 2220 psi | 3705 psi | 6170 psi |
| 200 (93) | 285 psi | 740 psi | 1480 psi | 2220 psi | 3705 psi | 6170 psi |
| 400 (204) | 285 psi | 740 psi | 1480 psi | 2220 psi | 3705 psi | 6170 psi |
| 600 (316) | 285 psi | 740 psi | 1480 psi | 2220 psi | 3705 psi | 6170 psi |
| 650 (343) | 285 psi | 740 psi | 1480 psi | 2220 psi | 3705 psi | 6170 psi |
| 700 (371) | 260 psi | 675 psi | 1350 psi | 2025 psi | 3375 psi | 5625 psi |
| 750 (399) | 230 psi | 655 psi | 1315 psi | 1970 psi | 3280 psi | 5470 psi |
| 800 (427) | 200 psi | 635 psi | 1270 psi | 1900 psi | 3170 psi | 5280 psi |
| 850 (454) | 170 psi | 600 psi | 1200 psi | 1795 psi | 3000 psi | 4995 psi |
| 900 (482) | 140 psi | 550 psi | 1095 psi | 1640 psi | 2735 psi | 4560 psi |
| 950 (510) | 125 psi | 535 psi | 1075 psi | 1610 psi | 2685 psi | 4480 psi |
| 1000 (538) | 110 psi | 505 psi | 1010 psi | 1515 psi | 2530 psi | 4215 psi |
| 1050 (566) | 95 psi | 485 psi | 970 psi | 1460 psi | 2430 psi | 4045 psi |
| 1100 (593) | 80 psi | 410 psi | 825 psi | 1230 psi | 2055 psi | 3430 psi |
| 1150 (621) | 65 psi | 270 psi | 540 psi | 805 psi | 1345 psi | 2240 psi |
| 1200 (649) | 50 psi | 170 psi | 340 psi | 510 psi | 845 psi | 1410 psi |
Note: F92 maintains better pressure ratings than F91 at temperatures above 593-C due to tungsten addition and superior creep strength.
Types of ASTM A182 F92 Flanges Available
ASTM A182 F92 Orifice Flange
ASTM A182 F92 Threaded Flange
ASTM A182 F92 Reducing Flange
ASTM A182 F92 Lap Joint Flange
ASTM A182 F92 Long Weld Neck Flange
ASTM A182 F92 Socket Weld Flange
ASTM A182 F92 Weld Neck Flange
ASTM A182 F92 Blind Flange
ASTM A182 F92 Slip-On Flange
Standard Flange Sizes & Weight Chart
ASTM A182 F92 Weld Neck Flange Dimensions (ANSI B16.5) - Class 300 Sample
| NPS | Outside Diameter (mm) | Thickness (mm) | Bore (mm) | Hub Dia (mm) | Bolt Circle (mm) | No. of Bolts | Bolt Dia | Approx Weight (kg) |
|---|---|---|---|---|---|---|---|---|
| 1/2" | 95 | 14 | 21 | 38 | 66 | 4 | M12 | 0.69 |
| 1" | 124 | 16 | 33 | 54 | 89 | 4 | M16 | 1.42 |
| 2" | 165 | 19 | 60 | 79 | 127 | 8 | M16 | 3.00 |
| 4" | 254 | 24 | 114 | 137 | 200 | 8 | M19 | 9.10 |
| 6" | 318 | 29 | 168 | 197 | 254 | 12 | M22 | 18.1 |
| 8" | 381 | 32 | 219 | 251 | 305 | 12 | M22 | 30.1 |
| 10" | 445 | 35 | 273 | 320 | 370 | 16 | M25 | 44.3 |
| 12" | 521 | 38 | 324 | 362 | 438 | 20 | M25 | 67.4 |
| 16" | 648 | 46 | 419 | 473 | 560 | 20 | M32 | 121.0 |
| 20" | 775 | 51 | 508 | 584 | 673 | 24 | M32 | 189.0 |
| 24" | 915 | 57 | 610 | 681 | 787 | 24 | M38 | 289.0 |
Is ASTM A182 F92 Good Quality for Ultra-Supercritical Power Plants?
Yes, the ASTM A182 F92 is the latest and greatest ferritic steel in ultra-supercritical (USC) and advanced ultra-supercritical (A-USC) power plants, with the highest creep strength of any 9Cr based ferritic alloy. In order to extend the limits of thermal efficiency in coal-fired and other power generation based on fossil fuels, F92 was designed to allow operation at steam temperatures of 600-620-C and pressures in the 25-30 MPa range.
In F92, the main innovation is that tungsten (1.5-2.0%) has been added to the adjusted 9Cr-1Mo-V-Nb base composition, with higher amounts of molybdenum (1.30-1.70% compared to 0.85-1.05% in F91). Tungsten offers a unique solid strengthening solution at higher temperatures and is capable of forming stable M23C6 carbides that cannot coarsen over a long period of time at higher temperatures. This two-step hardening process, F92, has a solid solution and precipitation hardening that offers it about 30-50% higher creep rupture strength compared to F91 at temperatures up to 593-C.
The high creep rate allows the USC power plants to run at higher temperatures in steam (600-620-C) than a supercritical (with F91 540-580-C), which further boosts thermal efficiency to 42-45% (supercritical) and possibly above 50 percent when the A-USC design is developed. This efficiency increase corresponds to massive fuel savings and CO2 emissions-important in the contemporary environmental policies and climate change lowering.
F92 is rated at the highest temperature, highest stress, components of the USC power plants: main steam piping, 600-620-C and 25-30+ MPa, hot reheat piping, 600-620-C and 25-30+ MPa, final stage superheater and reheater headers and tubes, and thick-section components, which demand maximum creep strength. It is contained in ASME B31.1 Power Piping Code with allowable stresses being defined for temperatures up to 649-C (1200-F) in its design.
Although F92 has excellent high temperature characteristics, it benefits even further stricter heat treatment control than F91 (normalizing at 1050-1080-C -5-C, tempering at 750-800-C) and has very demanding welding characteristics because of its complicated composition and martensitic microstructure. Welding is more difficult than F91 due to the tungsten content that needs special filler metals and must be carefully controlled with preheat, interpass temperature and PWHT. Even higher temperatures of about 650-C can be addressed with next generation alloys such as F93 (9Cr-3Mo-Nb-V-N more boron) or nickel-base superalloys, but F92 is the current upper limit of ferritic steels in the power generation industry.
Heat Treatment Requirements (Mandatory - Extremely Strict Control)
| Process | Step / Parameter | Requirement | Critical Remarks |
|---|---|---|---|
| Normalizing (Austenitizing) + Tempering | Normalizing Temperature | 1050-1080-C (1920-1975-F) | -5-C control mandatory due to tungsten (W) content |
| Holding Time | Adequate soaking | Based on section thickness | |
| Cooling After Normalizing | Air cool to below 400-C | Required before tempering | |
| Tempering Temperature | 750-800-C (1380-1470-F) | Mandatory | |
| Tempering Holding Time | Minimum 1 hour per 25 mm | Longer for heavy sections | |
| Cooling After Tempering | Air cool | - | |
| Tempering Cycles | Multiple cycles | May be applied for optimum properties |
Testing & Inspection Requirements (Comprehensive & Mandatory)
| Test / Inspection | Standard / Requirement | Acceptance / Remarks |
|---|---|---|
| Tensile Testing | As specified | Yield = 64 ksi, Tensile = 90 ksi, Elongation = 20%, Reduction of Area = 40% |
| Hardness Testing | Brinell hardness | 175-265 HB, typically 220-250 HB |
| Charpy Impact Testing | As specified | Minimum 41 J at 20-C (mandatory for USC applications) |
| PMI Testing | Positive Material Identification | Verification of Cr, Mo, W, V, Nb, N (W verification critical) |
| Metallographic Examination | Optical microscopy | Tempered martensite confirmed; no d-ferrite; proper precipitates (VN, NbC, M23C6) |
| Grain Size Determination | ASTM grain size | Typically ASTM 6-8, fine grain essential |
| Creep Testing | When specified | Short-term creep tests for critical service |
| Ultrasonic Testing | ASTM A388 | Mandatory for thick sections |
ASTM A182 F92 Ultra-Supercritical Flanges Price List 2026
| Flange Type | Size Range | Pressure Class | Indicative Price Range (USD/Piece) |
|---|---|---|---|
| Weld Neck (WN) | 1/2" - 2" | 150# | $52 - $145 |
| Weld Neck (WN) | 4" - 8" | 150# | $220 - $885 |
| Weld Neck (WN) | 10" - 24" | 150# | $1,320 - $4,850 |
| Weld Neck (WN) | 1/2" - 2" | 300# | $78 - $205 |
| Weld Neck (WN) | 4" - 8" | 300# | $335 - $1,280 |
| Weld Neck (WN) | 10" - 24" | 300# | $1,880 - $6,800 |
| Weld Neck (WN) | 1/2" - 2" | 600# | $115 - $295 |
| Weld Neck (WN) | 4" - 8" | 600# | $520 - $1,880 |
| Slip-On (SO) | 1/2" - 2" | 150# | $42 - $115 |
| Slip-On (SO) | 4" - 8" | 150# | $175 - $705 |
| Blind (BL) | 1/2" - 2" | 150# | $38 - $105 |
| Blind (BL) | 4" - 8" | 150# | $190 - $785 |
| Socket Weld (SW) | 1/2" - 2" | 150# - 600# | $58 - $245 |
Note: A182 F92 flanges are typically 220-280% higher than A105 and 50-65% higher than F91 due to tungsten addition, extremely strict heat treatment requirements (-5-C), comprehensive mandatory testing, and limited availability.
Applications of ASTM A182 F92 Flanges in Industry
The ASTM A182 F92 Ultra-Supercritical Advanced Ferritic Steel Flanges are commonly used in many industrial applications, and some of the common industries are given below.
Ultra-Supercritical Power
Main steam piping at 600-620-C, 25-30+ MPa, hot reheat piping USC conditions
Advanced USC Boilers
Final stage superheater/reheater headers and tubes, thick-section high-temp components
Next-Generation Combined Cycle
Advanced HRSG superheater sections for high-efficiency combined cycle
High-Efficiency Coal
Supercritical/USC coal-fired plants for reduced emissions and improved efficiency
Refinery (Advanced)
Highest temperature hydrocracking reactor effluent, advanced delayed coking
Petrochemical (Severe)
Ultra-high-temperature steam reforming, next-generation ethylene crackers
Hydrogen Production
Advanced reformer outlet piping at extreme temperatures
Why Choose ASTM A182 F92 Flanges from Metinox Overseas?
Metinox Overseas provides certified ASTM A182 F92 ultra-supercritical ferritic steel flanges with a very strict control of heat treatment (-5-C), full test such as impact and creep test and assure maximum creep strength in the most advanced USC power plants in the world. This is to guarantee that all of our F92 flanges are subjected to controlled normalizing temperatures of 1050-1080-C -5-C and temperatures of 750-800-C with continuous furnace inspection and recorded time-temperature profiles.
Each flange is supplied with EN 10204 3.1B Mill Test Certificates with full chemical analysis of W (1.50-2.00%) and Mo (1.30-1.70) verified through ICP analysis, V, Nb, N content checked, tensile properties, Charpy impact tests [=]41J at 20 -C, hardness of 175-265 HB, heat treatment history with -5-C controlled with records, grain size determination, and with full metallographic examination of tempered martensite microstructure confirming the carbides (M23C6) and VN/NbC precipitates for long-term creep strength.
Our technical staff can provide professional advice regarding F92 welding practices with 9Cr-2Mo-W-V-Nb (special filler metals are required, preheat 250-350-C, PWHT at 750-800-C is mandatory), creep rupture information as per ASME Section II Part D and with ASME B31.1 with regard to USC pipe welding. Catering to advanced USC power plants, some of the leading manufacturers of boilers and EPC contractors to next generation high efficiency power generation across the globe.
ASTM A182 F92 Flange Delivery Time & CIF Pricing by Country
| Destination Region | Major Ports / Cities | Estimated Delivery Time | Typical CIF Terms |
|---|---|---|---|
| Middle East (GCC) | Dubai, Dammam | 16-20 Days | CIF Dubai / CIF Dammam |
| Europe | Rotterdam, Hamburg | 30-38 Days | CIF Rotterdam / CIF Hamburg |
| USA & Canada | Houston, New York | 38-48 Days | CIF Houston / CIF New York |
| Southeast Asia | Singapore, Port Klang | 20-28 Days | CIF Singapore / CIF Port Klang |
| Africa | Lagos, Durban | 28-38 Days | CIF Lagos / CIF Durban |
Other Types of Ultra-Supercritical A182 F92 Flanges
ASTM A182 F92 Flanges, Modified 9Cr-2Mo-V-Nb-W Weld Neck Flanges, ASME SA182 F92 Blind Flanges, F92 Ultra-Supercritical Power Plant Flanges, F92 USC Flanges, F92 CSEF Flanges.
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Frequently Asked Questions (FAQ)
F92 has tungsten (1.5-2.0 percent) and increased molybdenum (1.30-1.70 percent) which offers 30-50 percent of creep strength superior to F91 at 600-620-C. F92 allows USC to operate at 600-620-C as compared to 540-580-C with F91. F92 must be subjected to even tighter control over heat treatment (-5-C vs -10-C) and more difficult welding.
Tungsten is an outstanding strengthening solid solution at high temperature and fosters the production of stable M23C6 carbides that cannot be subject to coarsening over extended exposure to high temperatures. This radically raises creep rupture strength to allow a 20-40-C greater operating temperatures than F91.
The amount of tungsten in F92 is very sensitive to problems with normalizing changes in temperature. The temperature should be restricted within -5-C (vs -10-C when F91) at 1050-1080-C in order to obtain adequate austenite grain size and precipitate distribution. Creep strength is greatly decreased with deviations.
F92 is classified to 649-C (1200-F) according to ASME B16.5 but in reality to 620-C in long term creep service. Over 620-C, new generation alloys such as F93, nickel-base superalloys (Alloy 617, 740H) are being developed in high-technology A-USC plants which aim at 650-700-C.
Nickel alloys (Alloy 625, 617, 740H) are the more expensive by a factor of 5-10 than F92, but offer superior creep strength above 650-C. F92 is the best cost-performance of USC plants at 600- 620-C. Nickel alloys to be used in high temperature locations or in future A-USC designs over 650-C.
Yes, to check the suitability of complex martensitic microstructure with tungsten-rich carbides, Charpy V-notch impact testing at 20-C with minimum 41J is normally required in the alloy application to USC power plants.
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