Customizable F44 Duplex Stainless Steel Seamless Pipe UNS S31254 for Oil and Gas Extraction
Price:
Negotiable
MOQ:
Negotiable
Delivery Time:
(Sample order) 7 days
Brand:
DINGSCO
Product Description
F44 Duplex Stainless Steel Seamless Pipe UNS S31254 254 SMO Seamless Pipes
F44 Duplex Stainless Steel Seamless Pipe, also known as UNS S31254 or 254 SMO, is a high-performance stainless steel product with the following details:
Composition and Properties:
- Alloy Composition: F44 is a super-austenitic stainless steel containing high levels of chromium, nickel, and molybdenum, which provides excellent corrosion resistance.
- Mechanical Properties: It offers moderate mechanical strength with a yield strength typically over 300 MPa and high ductility.
- Corrosion Resistance: The steel exhibits superior resistance to corrosion in seawater and a variety of industrial environments, including resistance to pitting, crevice corrosion, and stress corrosion cracking.
Standards and Specifications:
- ASTM A789: This standard covers seamless and welded ferritic/austenitic stainless steel tubing for general service, including F44 Duplex Stainless Steel Seamless Pipe.
- UNS S31254: This is the Unified Numbering System designation for the alloy, which is recognized internationally.
Applications:
- Seawater Systems: Due to its high resistance to corrosion in seawater, F44 is used in marine environments, offshore platforms, and desalination plants.
- Chemical Processing: The material is suitable for use in chemical processing equipment where resistance to aggressive media is required.
- Pulp and Paper: Industries that involve corrosive chemicals in paper production find F44 stainless steel suitable for their applications.
- Other Industries: It is also used in the oil and gas, pharmaceutical, and food processing industries.
Sizes and Availability:
- Sizes: F44 seamless pipes are available in various sizes and wall thicknesses, depending on the application requirements.
- Customization: The pipes can often be customized to meet specific project needs, including different lengths, finishes, and end configurations.
Fabrication and Handling:
- Welding: F44 can be welded using appropriate techniques, but care must be taken to prevent hot cracking and to maintain the material’s corrosion resistance.
- Fabrication: The material is generally more challenging to machine compared to standard stainless steels due to its high strength and hardness.
| Grade | UNS |
Tensile Strength (MPa min) |
Yield Strength (MPa min) |
Reduction of Area min (%) | Elongation min (%) | Hardness (HRC) |
| F44 | S31254 | 650 MPa min | 300 MPa min | / | 35% min | / |
Chemical Composition:%
| Ni | Cr | Fe | C | Mn | Si | S |
| 17.5-18.5 | 19.5-20.5 | Balance | 0.02max | 1.0max | 0.8max | 0.01max |
| Mo | P | Cu | N | |||
| 6.0-6.5 | 0.03max | 0.5-1.0 | 0.18-0.22 |
More Grades:
| Grade | UNS | DENSITY | EN/DIN W.Nr | CONDITION |
| Nickel 200 | N02200 | 8.89 | 2.4066 | Annealed |
| Nickel 201 | N02201 | 8.89 | 2.4068 | Annealed |
| MONEL 400 | N04400 | 8.80 | 2.4360 | Annealed |
| MONEL K-500 | N05500 | 8.44 | 2.4375 | Aged |
| INCOLOY 825 | N08825 | 8.14 | 2.4858 | Annealed |
| INCOLOY 925 | N09925 | 8.08 | - | Aged |
| INCOLOY 926 | N08926 | 8.1 | 1.4529 | Sol.Annealed |
| INCOLOY A-286 | S66286 | 7.94 | - | - |
| INCOLOY 800 | N08800 | 7.94 | 1.4876 | Annealed |
| INCOLOY 800H | N08810 | 7.94 | 1.4958 | Annealed |
| INCOLOY 800HT | N08011 | 7.94 | 1.4959 | Annealed |
| ALLOY 20 | N08020 | 8.1 | 2.4660 | Annealed |
| ALLOY 28 | N08028 | 8.0 | 1.4563 | Annealed |
| NIMONIC 80A | N07080 | 8.19 | 2.4952 | Aged |
| NIMONIC 901 | N09901 | 8.14 | 2.4662 | - |
| INCONEL 625 | N06625 | 8.44 | 2.4856 | Annealed |
| INCONEL 718 | N07718 | 8.19 | 2.4668 | Aged |
| INCONEL X-750 | N07750 | 8.28 | 2.4669 | Aged |
| INCONEL 600 | N06600 | 8.47 | 2.4816 | Annealed |
| INCONEL 601 | N06601 | 8.11 | 2.4851 | - |
| HASTELLOY C-276 | N10276 | 8.87 | 2.4819 | Annealed |
| HASTELLOY C-22 | N06022 | 8.69 | 2.4602 | Sol.Annealed |
| HASTELLOY C-4 | N06455 | 8.64 | 2.4610 | Sol.Annealed |
| HASTELLOY B-2 | N10665 | 9.22 | 2.4617 | Annealed |
| HASTELLOY B-3 | N10675 | 9.22 | 2.4600 | Annealed |
| HASTELLOY X | N06002 | 8.22 | 2.4665 | Aged |
| F44 | S31254 | 8.0 | 1.4547 | Annealed |
| F51 | S31803 | 7.8 | 1.4462 | Solution |
| F53 | S32750 | 7.8 | 1.4410 | Solution |
| F55 | S32760 | 7.8 | 1.4501 | Solution |
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Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Hunan Dinghan New Material Technology Co., LTD
Location
No. 2319, Building 2, Dongfang Furong Garden, No. 582 Yuanda 1st Road, Hehuayuan Street,Furong District, Changsha, Hunan Province, China.
Contact Person
Julia Wang

