Stainless Steel 321 Nuts Manufacturer

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Sachiya Steel International is One Of The Leading Manufacturer And Exporter Of High Quality Stainless Steel 321 Nuts And Bolts, which is a heat resistant grade and supplied into numerous industry sectors. Low carbon grades like Stainless Steel 321 Bolts have insufficient carbon to deplete the chromium content generally throughout the structure. Stainless Steel 321H Bolts has similar corrosion behavior to Stainless Steel 304 with the exception of improved inter-granular corrosion resistance due to the titanium addition for stabilization. Stainless Steel 321 Nuts is primarily used in applications that involve continuous and intermittent service temperatures within the carbide precipitation range of 800°-1500°F.

Stainless Steel 321 Nuts

       Stainless Steel 321 Nuts

Solution Treatment (Annealing) – heat this Stainless Steel 321H Bolts up to 950-1120 °C and cool rapidly for maximum corrosion resistance. Stainless Steel 321H Nuts is titanium stabilized austenitic stainless steel that is known for its general corrosion resistance. These Stainless Steel 321 Hex Head Bolts can be easily welded and processed by standard shop fabrication practices.

Our Stainless Steel 321H Hex Head Nuts is non-magnetic in the annealed condition and can be hardened only by cold working. These Stainless Steel 321 Square Bolts resists polythionic acid stress corrosion cracking in hydrocarbon service. Our Stainless Steel 321H Square Nuts can also be utilized in chloride or fluoride free caustic solutions at moderate temperatures. These Stainless Steel 321 U Bolts has molybdenum content which increases resistance to marine environments.

SS 321/321H Bolt/Nut Specifications
Specifications : ASTM A 193 ASME SA 193
Standard : DIN, ASTM, BS and all International Standards
Length : 3 mm to 200 mm
Size : M3 – M56 | 3/6″ to 2″ | Custom Sizes
Type : Hex Head Bolts, Square Bolts, U bolts, Eye bolts, T bolt, Hex Bolt, Lag Bolts, Counter sunk Bolts, Hex Head nuts, Square nuts, Lock nuts, Eye nuts, wing nuts, T nuts, Panel Nuts, Coupling Nuts, Dome nuts, Acorn Nuts.
321/321H Stainless Steel Bolt/Nut 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 321/321H Bolt/Nut 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 Bolt/Nut
STANDARD WERKSTOFF NR. UNS JIS EN
SS 321 1.4541 S32100 SUS 321 X6CrNiTi18-10
SS 321H 1.4878 S32109 SUS 321H X12CrNiTi18-9
SS 321/321H Bolt/Nut 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
321/321H Steel Bolt/Nut 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)

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