Sachiya Steel International is a well-known firm that distributes a wide range of SS 321 Threaded Forged Fittings, where post weld heat treatment is not necessary. Stainless Steel 321 Forged Threaded Fittings is used for welding under conditions which prevent a 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 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.
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Special consideration in Stainless Steel 321 Forged Threaded Cross Fittings is required to avoid weld “hot cracking” by assuring formation of ferrite in the weld deposit. Stainless Steel 321H Forged Threaded Cap Fittings is often used for Expansion joints and Thermal oxidizers.
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 |
SS 321/321H Forged Fittings Chemical Composition
| 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 |
Stainless Steel 321 Threaded Fitting Mechanical Properties
| 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 % |
Equivalent Grades for 321/321H Stainless Steel Round Bar
Equivalent Grades for 321 Stainless Steel Forged Fittings
| STANDARD | WERKSTOFF NR. | UNS | JIS | EN |
| SS 321 | 1.4541 | S32100 | SUS 321 | X6CrNiTi18-10 |
| SS 321H | 1.4878 | S32109 | SUS 321H | X12CrNiTi18-9 |
Stainless Steel 321/321H Forged Fittings Application Industries
- Off-Shore Oil Drilling Companies
- Power Generation
- Petrochemicals
- Gas Processing
- Specialty Chemicals
- Pharmaceuticals
- Pharmaceutical Equipment
- Chemical Equipment
- Sea Water Equipment
- Heat Exchangers
- Condensers
- Pulp and Paper Industry
SS 321/321H Forged Threaded Fittings Test Certificates
We at Sachiya Steel International provide Manufacturer TC (Test Certificate) in accordance to EN 10204/3.1B, Raw Materials Certificate, 100% Radiography Test Report, Third Party Inspection Report. We also provide Standard certificates like EN 10204 3.1 and additional requirement like. NACE MR 01075. FERRIT CONTENT as per norms if requested by clients.
• EN 10204/3.1B,
• Raw Materials Certificate
• 100% Radiography Test Report
• Third Party Inspection Report, etc.
Material Testing
We at Sachiya Steel International ensure that all our materials go through strict quality tests before dispatching them to our clients.
• Mechanical Testing Such as Tensile of Area
• Hardness Test
• Chemical Analysis – Spectro Analysis
• Positive Material Identification – PMI Testing
• Flattening Test
• Micro and Macro Test
• Pitting Resistance Test
• Flaring Test
• Intergranular Corrosion (IGC) Test
Documentation
• Commercial Invoice which includes HS Code
• Packing List including net weight and gross weight, number of boxes, Marks and Numbers
• Certificate of Origin legalized/attested by Chamber of Commerce or Embassy
• Fumigation Certificates
• Raw Material Test Reports
• Material Traceability Records
• Quality Assurance Plan (QAP)
• Heat Treatment Charts
• Test Certificates certifying NACE MR0103, NACE MR0175
• Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2
• Guarantee Letter
• NABL approved Laboratory Test Reports
• Welding Procedure Specification/Procedure Qualification Record, WPS/PQR
• Form A for the purposes of the Generalized System of Preferences (GSP)
Stainless Steel 321/321H Forged Fittings Packaging
We focus on every procedure to assure quality, the package we usually take is pack SS 321 Threaded Fittings with environmental poly bags, and then in free fumigation wooden cases or wooden plate. Also can accept customized package such as OEM by negotiation. We offers just about everything to meet your 321 Stainless Steel Forged Threaded Fittings pack requirements. Lot of emphasis is placed on the packing and packaging. The Stainless Steel 321 Threaded Fittings are packed in wooden corrugated boxes foiled in plastic wraps and bubble wraps.
