Super Duplex Steel F55/S32760/W.Nr.1.4501 Forged Blind Flange
F55 containing 25% chromium, 7% nickel, 3.6% molybdenum as well as copper, tungsten and nitrogen, it is a high-pren, high-alloy super duplex stainless steel suitable for corrosive environments. It is a super biphase steel with a ferritic-austenitic microstructure. The alloy is composed of approximately 40-50% ferrite in the annealed state. The super biphase microstructure has the high strength of ferritic steel grades while retaining the corrosion resistance of austenitic steel grades, making it suitable for a variety of applications in industries such as oil and gas, CPI (chemical processing industry) and Marine environments.
As a high-performance super duplex stainless steel, F55 blind flange may encounter some common problems in practical applications. These issues are often related to general problems with the flange, including:
- Leakage problem: Due to the influence of media corrosion, erosion, temperature, pressure, vibration and other factors, the flange may leak. These problems may be caused by the slider size of the flange sealing surface, the aging of the sealing elements, or improper installation. If the leakage problem cannot be dealt with in time, it may cause material losses, damage to the production environment, and even cause serious accidents, especially when handling In the case of toxic, lethal, flammable and explosive media.
- Issues with the classification and use of Flange: The classification and use standards of French may be different in different industries and regions, which may lead to inconsistencies or non-compliance with specific standards when selecting and using French.
- Problems with connection and sealing forms: The choice of flange connection forms and sealing methods is crucial to ensuring the safe operation of the system. Improper connections or sealing methods may cause leaks or other malfunctions.
- Material and manufacturing quality issues: As a high-performance material, the manufacturing quality of F55 blind flange has an important impact on the safety and reliability of the application. If the material selection is inappropriate or there are quality issues during the manufacturing process, the performance and life of the flange may be affected.
Therefore, when using F55 blind flange, you should ensure that you comply with relevant standards and specifications, and take appropriate maintenance and inspection measures to avoid the above problems.
| Grade |
UNS |
density |
DIN |
| F55 |
S32760 |
7.7g/cm³ |
W.Nr.1.4501 |
| Chemical Composition(%) |
Ni |
C |
P |
Mn |
W |
S |
Mo |
| 6.0-8.0 |
0.03max |
0.03max |
1max |
0.5-1 |
0.01max |
3.0-4.0 |
| Si |
Cu |
Cr |
N |
|
|
|
| 1.0max |
0.5max |
24.0-26.0 |
0.2-0.3 |
|
|
|
Physical
Properties |
Tensile Strength
( Mpa min) |
Yield Strength
( Mpa min) |
Reduction of Area ,min (%) |
Elongation
min(%) |
Hardness
(HRC) |
| 750MPa min |
550 MPa min |
45% min |
25% min |
|
DINGSCO
Hunan Dinghan New Material Technology Co., Ltd. (DINGSCO) specialized in Nickel Based Corrosion Resistant and High Temperature alloys products which used in the world’s most technically demanding industries and applications.We are dedicated to providing our customers with best quality products, fastest possible deliveries, most competitive prices of Nickel Based Corrosion Resistant and High Temperature alloys in bars, rods, forged flanges, valve parts (Ball, Stem, Seat Ring, etc), forged shapes (shafts, discs, blocks, hubs, rings, cylinders and other custom shapes) according to ASTM, ASME, API, AMS, NACE and other industry standards.
PROFESSIONAL NICKEL ALLOY MANUFACTURER
- Monel, Incoloy, Inconel, Hastelloy
- VIM, ESR, Forging, Heat treatment, Machining
- Round Bar, Ball, Stem, Ring, Flange, etc
- ISO9001, API-6A, API-20B, PED, NORSOK
CORE VALUE
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- SCIENCE AND TECHNOLOGY INNOVATION STRATEGY
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