Sachiya Steel International is one of the Leading Manufacturer And Exporters of Stainless Steel 321 Threaded Forged Fittings, where post-weld heat treatment is not necessary. Stainless Steel 321 Forged Threaded Fittings is used for welding under conditions that prevent post-weld anneals. Some typical areas of application of Stainless Steel 321H Forged Threaded Fittings are furnace components. Stainless Steel 321 Forged Threaded Elbow Fittings cannot be hardened by thermal treatment, but strength and hardness can be increased substantially by cold working, with subsequent reduction in ductility.
The added titanium content of minimum of five times the carbon % content (max 0.7 %) means that Stainless Steel 321H Forged Threaded Tee Fittings also possesses good creep strength and good resistance to chromium carbide precipitation. Special consideration in Stainless Steel 321 Forged Threaded Cross Fittings is required to avoid weld “hot cracking” by assuring the formation of ferrite in the weld deposit. Stainless Steel 321H Forged Threaded Cap Fittings is often used for Expansion joints and Thermal oxidizers.
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Stainless Steel 321 Forged Threaded Bend Fittings is similar to Type 304 stainless steel; however, it contains a Titanium addition of at least five times the carbon content. Stainless Steel 321H Forged Threaded Coupling Fittings is also used for Bellows and Furnace parts. Stainless Steel 321 Forged Threaded Union Fittings is used principally for applications involving welding or sustained elevated temperature operations where re-annealing is not practical.
Stainless Steel 321/321H Forged Threaded Fittings Specifications
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Specifications | : | ASTM A182 & ASME SA182 |
Size | : | 1/8” NB to 4” NB (Socket weld & Screwed-Threaded) |
Standards |
: | ASME 16.11, MSS SP-79, 83, 95, 97, BS 3799 |
Class | : | 2000 LBS, 3000 LBS, 6000 LBS, 9000 LBS |
Type | : | Threaded Fittings |
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 | 1457 °C (2650 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
STANDARD | WERKSTOFF NR. | UNS | JIS | EN |
SS 321 | 1.4541 | S32100 | SUS 321 | X6CrNiTi18-10 |
SS 321H | 1.4878 | S32109 | SUS 321H | X12CrNiTi18-9 |
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- Power Generation
- Petrochemicals
- Gas Processing
- Specialty Chemicals
- Pharmaceuticals
- Pharmaceutical Equipment
- Chemical Equipment
- Sea Water Equipment
- Heat Exchangers
- Condensers
- Pulp and Paper Industry
About Us:
Sachiya Steel International are manufacturers & exporters of Pipes, Tubes, Pipe Fitting, Fasteners.
Sachiya Steel International is an internationally acclaimed Pipes And Tubes manufacturing company that exports to more than 90 countries worldwide. We export our high-quality fasteners in Saudi Arabia, Oman, UAE, Dubai, Kuwait, Qatar, Mexico, USA, Malaysia, Iran, and many other countries.
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