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Gayatri Tubes is one of the prominent suppliers, manufacturers, exporters and wholesalers of the product SS 321 / 321H Forged Fittings in the competitive market today. In order to maintain long term relations and trust with all our new and old clients, we make our products as a high-quality product. Our forged fitting is a much-demanded product in the local as well as an international market for many years now. One of the main reasons for this demand is that it is available in variant shape, thickness, dimension, size, designations specifications, standards, grades, ranges, type and alloys. But above all types of forged fittings, our SS 321 / 321H Forged Fittings is the most popular product.
The Stainless Steel in the grade 321 / 321H offers great features like really great weldability and forming capacity thus this makes this alloy as the most suitable alloys for using in the operating temperature conditions up to 500 degrees C and more than it as well. In other words, this grade is also known as UNSS32109. In addition to this, it also provides higher temperature strength in various extreme conditions.
Forged fittings are generally known as the fittings which can also be availed in the threaded as well as socket forms. It is useful in connecting the nominal bore pipeline to many areas and applications. Additionally some of the characteristics offered by SS 321 / 321H Forged Fittings are greater reliability, toughness, strong product, durable fitting which can be used for a longer period of time, higher strength, excellent corrosion resistance, resistance from the crevice corrosion, excellent pitting resistance, outstanding creep strength, higher resistance to inorganic chemical, organic chemicals, enhanced intergranular corrosion, etc.
On the other hand, it is widely used in the application where there are greater vibrations, pressure, as well as corrosion circumstances exist. Some of the major application industries where this type of forged fitting is widely used are- oil refinery equipment, pressure vessels, and petrochemical refineries. Along with this the chemical process like heat exchangers, industrial boilers, power generation, offshore oil drilling industries, many more. Some of the material testing done on our product are hardness tests, PMI tests, pitting resistance tests, etc.
| STANDARD | WERKSTOFF NR. | UNS | JIS | EN |
| SS 321 | 1.4541 | S32100 | SUS 321 | X6CrNiTi18-10 |
| SS 321H | 1.4878 | S32109 | SUS 321H | X12CrNiTi18-9 |
| Specifications | ASTM A182 / ASME SA182 |
| Dimensions | ASME 16.11, MSS SP-79, 83, 95, 97, BS 3799 |
| Size | 1/8” NB to 4” NB (Socketweld & Screwed-Threaded) |
| Type | Socketweld Fittings, Screwed-Threaded Fittings |
| Class | 2000 LBS, 3000 LBS, 6000 LBS, 9000 LBS |
| Grade | C | Mn | Si | P | S | Cr | N | Ni | Ti |
| SS 321 | 0.08 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 - 19.00 | 0.10 max | 9.00 - 12.00 | 5(C+N) – 0.70 max |
| SS 321H | 0.04 – 0.10 | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 - 19.00 | 0.10 max | 9.00 – 12.00 | 4(C+N) – 0.70 max |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.0 g/cm3 | 1400 °C (2550 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
