AISI 904L Blind Flanges
AISI 904L Blind Flanges are flat circular type flanges which are used as blank for terminating the pipeline. AISI 904L blind flanges are produced with flat face, raised face, tongue and groove, male-female, and ring joint facing for sealing.
Anand Steels is a manufacturer, stockist and supplier of AISI 904L blind flanges from 3/8” to 60” NPS. AISI 904L flanges are manufactured by means of hot forging to ASTM A182 F904L material specification and machined to suit dimensions of ANSI/ASME B16.5, B16.36, B16.47 Series A, Series B, B16.48, BS 10, BS 1560, EN 1092-1, API 6A, 6B, 6BX, ISO, GOST and various DIN standards. AISI 904L blind flanges can also be machined from plates to ASTM A240/A240M Type 904L (UNS N08904) material specification. Stainless steel 904l blind pipe flanges are duly marked for traceability. We offer worldwide shipping by Sea or Air freight options.
For more information on AISI 904L Blind Flanges, see below details.
- Sizes: 3/8” to 60” NPS
- Pressure Ratings: Class 75/150/300/400/600/900/1500/2500; PN6, PN10, PN16, PN25, PN40, PN64, PN100.
- Facing: Flat Face, Raised Face, Ring Joint, Tongue and Grooved, Male and Female.
- Construction: Hot Forged and Plate Machined
- Dimensions & Tolerances;: ASME / ANSI , BS, EN, ISO, GOST and DIN Standards
- Material Specifications: ASTM / ASME A182 F904L, ASTM A240/A240M Type 904L / UNS N08904, Uranus® B6, X1-Ni-Cr-Mo-Cu-25-20-5, DIN/EN/Werkstoff Number 1.4539
- Origin: India, China, Taiwan, Korea, Japan, Sweden, Italy, France, Germany, UK & USA
Chemical Requirements for AISI 904L Blind Flanges
| Elements | Composition, % |
|---|---|
| Carbon (C) | 0.02 Max |
| Manganese (Mn) | 2.00 Max |
| Phosphorus (P) | 0.04 Max |
| Sulfur (S) | 0.03 Max |
| Silicon (Si) | 1.00 Max |
| Chromium (Cr) | 19.00 – 23.00 Max |
| Nickel (Ni) | 23.00 – 28.00 Max |
| Molybdenum | 4.00 – 5.00 Max |
| Copper (Cu) | 1.00 – 2.00 Max |
| Nitrogen (N) | 0.10 Max |
Mechanical Requirements for AISI 904L Blind Flanges
| Elements | Composition | |
|---|---|---|
| Tensile Strength, min ksi [MPa] | 71 [490] | |
| Yield Strength, min ksi [MPa] | 31 [215] | |
| Elongation in 2 inch or 50mm (or 4D), min % | Longitudinal | 35 |
| Transverse | 25 | |
Applications for AISI 904L Blind Flanges
- Process equipment in chemical industry
- Petrochemical industry
- Bleaching equipment in the pulp and paper industry
- Flue gas cleaning
- Desalination
- Seawater handling
- Hydrometallurgy
- Food and beverage
- Pharmaceuticals
- Heat exchangers