Piyush Steel is a reliable manufacturer and supplier of ASTM A182 F91 Alloy Steel Forged Fittings, known for their performance in high-temperature and high-pressure environments. These forged fittings are made from a special alloy that includes chromium, molybdenum, and vanadium, which gives them strong mechanical strength and helps them resist rust and wear from heat. Used across power plants, petrochemical refineries, and steam processing systems, our F91 forged fittings are manufactured in compliance with international standards, including ASTM A182 and ASME SA182.
What makes 2 F91 forged fittings suitable for demanding applications is their chemical composition and heat treatment. The alloy contains around 9% chromium and 1% molybdenum, which improves its ability to resist scaling and maintain strength even at elevated temperatures. These fittings are typically normalized and tempered, providing a balanced microstructure that enhances both toughness and weldability. Whether you need elbows, tees, couplings, or unions, our range of forged fittings ensures long-term reliability under pressure and heat.
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In industries where safety and performance are critical, choosing the right material is essential. Alloy Steel F91 forged fittings offer a clear advantage over standard carbon steel or lower-grade alloy options like F5 or F9. Pipelines that require resistance to creep, thermal stress, and corrosion particularly benefit from their use. These qualities make them ideal for boiler piping, heat exchangers, reheaters, and other high-temperature service components. At Piyush Steel, we comprehend the technical requirements of these environments and provide comprehensively tested and certified forged fittings.
We provide complete documentation for all our forged fittings, which includes Mill Test Certificates and optional third-party inspection reports. We offer fittings in various pressure ratings, such as 2000, 3000, 6000, and 9000 class, and in sizes ranging from ½" NB to 48" NB. Available in both socket weld and threaded types, our products are suitable for diverse installation needs. With a well-managed inventory and in-house testing facilities, we ensure timely delivery and consistent product quality, whether you're managing a small maintenance job or a large infrastructure project.
Piyush Steel has built a reputation for supplying ASTM A182 F91 alloy forged fittings that meet the highest quality standards. Not only do we use our products in India, but we also export them to customers worldwide. By combining technical expertise with responsive service, we support our clients in choosing the right fittings for their applications. If you're looking for durable, high-temperature alloy steel fittings with excellent service life, our F91 range is a dependable choice for performance and value.
| STANDARD | UNS | WERKSTOFF NR. | Trade Name |
| Alloy Steel F91 | K90901 | 1.4903 | 9Cr-1Mo-V |
Specification : ASTM A182 / ASME SA182
Dimensions : ASME B16.11, MSS-SP-79, MSS-SP-83, MSS-SP-95, MSS-SP-97, BS3799
Size : 1/2" NB TO 48" NB.
Class : 2000 LBS, 3000 LBS, 6000 LBS, 9000 LBS
Type : Socketweld Fittings, Screwed-Threaded Fittings
ASTM A182 - ASME SA182 : Standard Specification for Wrought Alloy Steel Piping Fittings
ASME B16.11 : Socket Welding and Threaded Forged Fittings
MSS SP-43 : Wrought and Fabricated Butt-Welding Fittings for Low Pressure, Corrosion Resistant Applications
MSS SP-95 : Swage(d) Nipples and Bull Plugs
BS3799 : Specification for Alloy Steel pipe fittings, screwed and Socket-welding for the petroleum industry
| Grade | C | Mn | Si | P | S | Cr | Mo |
| Alloy Steel F91 | 0.08 - 0.12 | 0.3 - 0.6 | 0.5 | 0.01 | 0.02 | 8.5 - 9.5 | 0.85 - 1.05 |
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min |
| Alloy Steel F91 | 415 | 585 | 20 |
The full identification of the forged fittings should be continuously marked down its whole length, including :

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With Mill And Third Party Test Certificate.
ASTM A182 Alloy Steel F91 Forged Fittings Price List
Request the latest ASTM A182 Alloy Steel F91 Forged Fittings Price List. Please Call +91 22 23867540 or Send an Email to [email protected] for Chrome Molybdenum UNS K90901, 1.4903 Forged Fittings Ready stock information and updated price list.