Austenitic SS Sanrico 28 Flanges and Fittings
Alloy 28 fittings and Alloy 28 flanges are nickel-iron-chromium-based alloys with additions of molybdenum and copper which has an incredible resistance to both reducing and oxidizing acids to the local corrosive environment.
These flanges are excellent resistant to stress-corrosion cracking, and to localize attacks such as pitting and crevice corrosion. The Sanrico 28 alloy is especially resistant to sulphuric and phosphoric acid.
Incoloy 28 or UNS N08028 flanges and fittings with the addition of molybdenum, copper, and nitrogen, gives excellent resistance to stress-corrosion cracking, and to localize attacks such as pitting and crevice corrosion.
Chemical Composition
| GRADE | Cr | Ni | Mo | Mn | Si | P | Cu | S | C | Cu | Fe | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ALLOY 28 | Min | 26 | 30 | 3 | – | – | – | 1 | – | – | 0.75 | – |
| Max | 28 | 32 | 4 | 2 | 0.7 | 0.03 | 2 | 0.01 | 0.02 | 1.5 | BALANCE |
Properties
Physical Properties
| Grade | Density (g/cm3) | Thermal Conductivity (W/m.K) | Specific Heat ( J/Kg.K) | Electrical Resistivity (Ωmm2/m) |
|---|---|---|---|---|
| at 100°C | 0-100°C | at 20°C | ||
| ALLOY 28 | 8 | 12 | 450 | 1 |
Mechanical Properties
| Grade | Tensile Strength | Yield Strength | Elongation |
|---|---|---|---|
| [MPA] | [MPA] | (% in 50mm) min | |
| Sanrico 28 | 650 | 250 | 40 |
Flange Specifications
As per application and uses in pipes and tubes Sanrico 28 flange are broadly categorized into different sort, for instance, Welding Neck Flange (WNF) & Long Welding Neck Flange or (LWNF), Slip-on Flange or (SOF), Lap Joint Flange or (LJW), Blind Flange, Socket Welding Flange or (SWF), Threaded Flange or (THW), Plate Flange.
Incoloy 28 Flange, for the most part, has different face types, for instance, Flat Face (FF), Raised Face (RF), Ring Type Joint (RTJ), blind flange, with numerous class ratings as follows – 50 LBS, 600 LBS, 300 LBS, 900 LBS, 1500 LBS, 2500 LBS, and DIN Standard ND-6,10, 16, and, din 2.4856, 25, 40 & ANSI B16.5, and with manufacturing standards such as ANSI/ASME B16.5, B16.47, BS4504, B 16.47 Series A & B, BS 10, EN-1092, DIN, etc
Specification of Fittings
Sanrico 28 Fittings are particularly available as Elbow, Reducer, Tee, Coupling, Bend, Stub End, Cap, Nipple, Cross, Washer, Union, etc which are available in different types such as Welded, Seamless and Fabricated having a thickness range from 5s, 10s, the 40s, 80s, 10, 20, 40, STD, 60, 80, XS, 100, 120, 140, 160, XXS available with NACE MR 01-75.
Application
Sanrico 28 alloy is especially resistant to sulphuric and phosphoric acid. Used for chemical processing, pollution control equipment, oil and gas well piping, nuclear fuel reprocessing, acid production, and pickling equipment.
