Stainless Steel 321 Threaded Forged Fittings Manufacturer

Sachiya Steel International Is One Of The Leading Manufacturer And Exporter Of High Quality 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 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.

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Stainless Steel 321 Threaded Forged Fittings
Stainless Steel 321 Threaded Forged Fittings

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. 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
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 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)