Nguyen Fittings and Plates supplies durable Alloy Steel F91 Forged Fittings that are perfect for high-pressure and high-temperature applications. Made to ASTM A182 F91 and ASME B16.11, these forged fittings feature socket weld and threaded designs used in superheaters, boilers, power plants, and nuclear facilities. F91 is a modified 9Cr-1Mo-V alloy steel known for its excellent creep strength, resistance to thermal fatigue, and oxidation resistance. Our fittings ensure secure, leak-proof performance in the most challenging industrial settings, providing long service life and operational safety.
| Specification : | ASTM A182 F91 Forged Fittings |
|---|---|
| Size | Threaded Fittings = ½” – 4” |
| Pressure Rating | Threaded Fittings = Class 2000, Class 3000, Class 6000 |
| Type Of Pipe systems | 45 Deg Elbow, Equal tee, Full Coupling, Reducing Tee, 90 Deg Elbow, Half Coupling, Street Elbow, Bull Plug, Boss, Union (Male/Female), Lateral Outlet, 45 Lateral Tee, Equal Cross, Pipe Cap, Branch Outlets, Swage Nipple. |
| Thread Connections | ASME B16.11 (Socket Welding and Threaded) Fittings, MSS-SP-83 (Class Unions) Fittings, ASME B16.3 (Malleable Iron Fittings) Fittings, ASME B16.4 ( Gray Iron Fittings) Fittings, ASME B16.39 (Malleable Iron Unions) Fittings, ASME B16.34 (Valves — Flanged) Fittings, ASME B16.39 (Malleable Iron Pipe Unions Fittings, 150#, 250#, Or 300#). |
| Standards | ASME B16.11 (American Standard), Bs3799, MSS SP 79, JIS B2302, MSS-SP-97 (Threadolet), MSS-SP-83 (Union), ASME B36.19 (Nipple) |
| Types Of Thread | NPT Fittings, BSPP Fittings, BSPT Fittings, PF Fittings, PT Fittings, MPT Fittings |
| Applications | Oil and Gas Chemical Power station Water Pipeline Noncritical Applications Fire Protection |
| Advantages Of | Simple Usage Easy installation Economic as cheaper |
Alloy Steel F91 contains 9% chromium, 1% molybdenum, vanadium, and niobium. It offers tensile strength up to 620 MPa and yield strength of at least 415 MPa, along with superior creep rupture resistance. The alloy is tempered and normalized to enhance its mechanical properties and stability under constant heat exposure. F91 exhibits excellent hardness, impact strength, and resistance to scaling at temperatures above 600°C, making it suitable for thermal and pressure-critical systems.
| Gr | C | Mn | Si | S | P | Cr | Mo |
| ASTM A182 F91 Forged Fittings | 0.15 | 0.3 – 0.6 | 0.5 | 0.03 | 0.03 | 4 – 6 | 0.044 – 0.65 |
| Grade | Tensile Strength (Mpa) | Yield Strength (Mpa) | Elongation % |
| ASTM A182 F91 Forged Fittings | 275 | 485 | 20 |
Nguyen Fittings is a leading supplier of Alloy Steel F91 Forged Fittings in Da Nang, Vietnam. We offer an extensive range of Alloy Steel F91 Forged Fittings, renowned for their excellent corrosion resistance and high strength, which makes them perfect for demanding industrial applications like chemical processing, marine environments, and high-temperature systems. With a commitment to quality and reliable delivery, we ensure our clients receive top-tier products tailored to meet the specific needs of various industries.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Choose Alloy Steel F91 Forged Fittings from Nguyen Fittings for superior quality, exceptional corrosion resistance, and reliable performance in extreme conditions. We offer customized solutions backed by expert support and industry experience.
Alloy Steel F91 Forged Fittings offer numerous advantages, including exceptional strength, making them suitable for high-pressure and high-temperature applications. Their excellent corrosion resistance and thermal stability ensure long-term durability in harsh environments. With superior creep resistance and oxidation protection, they perform reliably in critical industrial systems. These fittings also offer excellent weldability, machinability, and ease of installation. Their resistance to fatigue and wear under extreme conditions ensures minimal maintenance and downtime, making them a preferred choice for industries such as power generation, petrochemical, and aerospace, where performance and safety are paramount.
Yes, custom sizes for Alloy Steel F91 Forged Fittings are available at Nguyen Fittings. We offer tailored solutions to meet your specific requirements, ensuring optimal performance for your projects. For more information, please contact us at sales@nguyenfittings.com.
| STANDARD | UNS | WERKSTOFF NR. | Trade Name |
| ASTM A182 F91 Forged Fittings | K90901 | 1.4903 | 9Cr-1Mo-V |
| DN | NPS | Center to End NPT Elbow, NPT Tee, NPT Cross A | Center to End 45 Deg Elbow C | O.D. of Band H | Min. Wall Thick. G | Length of Thread. Minimum (1) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Class 2000 | Class 3000 | Class 6000 | Class 2000 | Class 3000 | Class 6000 | Class 2000 | Class 3000 | Class 6000 | Class 2000 | Class 3000 | Class 6000 | B | L2 | ||
| 6 | 1/8 | 21 | 21 | 25 | 17 | 17 | 19 | 22 | 22 | 25 | 3.18 | 3.18 | 6.35 | 6.4 | 6.7 |
| 8 | 1/4 | 21 | 25 | 28 | 17 | 19 | 22 | 22 | 25 | 33 | 3.18 | 3.30 | 6.60 | 8.1 | 10.2 |
| 10 | 3/8 | 25 | 28 | 33 | 19 | 22 | 25 | 25 | 33 | 38 | 3.18 | 3.51 | 6.98 | 9.1 | 10.4 |
| 15 | 1/2 | 28 | 33 | 38 | 22 | 25 | 28 | 33 | 38 | 46 | 3.18 | 4.09 | 8.15 | 10.9 | 13.6 |
| 20 | 3/4 | 33 | 38 | 44 | 25 | 28 | 33 | 38 | 46 | 56 | 3.18 | 4.32 | 8.53 | 12.7 | 13.9 |
| 25 | 1 | 38 | 44 | 51 | 28 | 33 | 35 | 46 | 56 | 62 | 3.68 | 4.98 | 9.93 | 14.7 | 17.3 |
| 32 | 1-1/4 | 44 | 51 | 60 | 33 | 35 | 43 | 56 | 62 | 75 | 3.89 | 5.28 | 10.59 | 17.0 | 18.0 |
| 40 | 1-1/2 | 51 | 60 | 64 | 35 | 43 | 44 | 62 | 75 | 84 | 4.01 | 5.56 | 11.07 | 17.8 | 18.4 |
| 50 | 2 | 60 | 64 | 83 | 43 | 44 | 52 | 75 | 86 | 102 | 4.27 | 7.14 | 12.09 | 19.0 | 19.2 |
| 65 | 2-1/2 | 76 | 83 | 95 | 52 | 52 | 64 | 92 | 102 | 121 | 5.61 | 7.65 | 15.29 | 23.6 | 28.9 |
| 85 | 3 | 86 | 95 | 106 | 64 | 64 | 79 | 109 | 121 | 146 | 5.99 | 8.84 | 16.64 | 25.9 | 30.5 |
| 100 | 4 | 106 | 114 | 114 | 79 | 79 | 79 | 146 | 152 | 152 | 6.55 | 11.18 | 18.67 | 27.7 | 33.0 |
| Normal Pipe Size | A | B | QTY | Weight In KG |
|---|---|---|---|---|
| ¼ | 0.81 | 0.88 | 160 | 0.20 |
| ⁄ | 0.97 | 1.00 | 130 | 0.26 |
| ½ | 1.12 | 1.31 | 100 | 0.57 |
| ¾ | 1.31 | 1.5 | 75 | 0.71 |
| 1 | 1.5 | 1.81 | 40 | 1.08 |
| 1 ¼ | 1.75 | 2.19 | 25 | 1.68 |
| 1 ½ | 2.00 | 2.44 | 18 | 2.38 |
| 2 | 2.38 | 2.97 | 10 | 3.55 |
| 2 ½ | 3.00 | 3.62 | 4 | 6.22 |
| 3 | 3.38 | 4.31 | 2 | 10.36 |
| 4 | 4.19 | 5.75 | 1 | 23.91 |
Get in touch with one of our Technical Sales Representatives to request a quote or get answers to any questions you may have.
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