Ninthore Overseas is one Of the Leading Manufacturer And Exporter of Hastelloy B3 Flanges , which has some excellent features to offer such as fine finish, durable, accurate dimensions, and more. Hastelloy B3 Threaded Flanges (UNS N10675) has great resistance to knife – line and heat – affected zone attack. Hastelloy B3 Slip On Flanges has a special chemistry designed to achieve greater thermal stability than B-2 alloy, resulting in easier fabrication. Hastelloy B3 Spectacle Blind Flanges have good creep and oxidation resistance. Hastelloy B3 Weld Neck Flanges is not recommended for use in the presence of ferric or cupric salts because these salts can cause premature failure.

Hastelloy B3 Lap Joint Flanges has a special chemistry designed to achieve a level of thermal stability greatly superior to that of its predecessors, e.g. B2 alloy. Meanwhile, these Hastelloy B3 Nippon Flanges are also being offered in customized sizes and shapes to our customers. Ninthore Overseas is one of the prominent seller and exporter of Hastelloy B3 Socket Weld Flanges, which is dual-certified to meet both SS 316 and SS 316L.

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Our Hastelloy B3 Ring Type Joint Flanges is ideally suited for applications requiring corrosion resistance superior to SS 304 and has good elevated temperature strength. Hastelloy B3 Spacer Flanges does not rust, because of the interaction between its alloying elements and the environment. In fact, our Hastelloy B3 Long Weld Neck Flanges by definition contain at least 10 percent chromium.
Hastelloy B3 Pipe Flanges Specifications
Specifications : ASTM B564 / ASME SB564
Size : 1/2″NB TO 60″NB
: ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc.
Class / Pressure : 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.
Standard : ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc.

Hastelloy Alloy B3 Pipe Flanges Chemical Composition

Grade Ni Mo Cr Fe W Mn C Al Ti Si
Hastelloy B3 65.0 min 28.5 1.5 1.5 3.0 max 3.0 max 0.01 max 0.50 max 0.2 max 10 max

Hastelloy B3 Plate Flanges Mechanical Properties

Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
9.2 g/cm3 1370 °C (2550 °F) Psi – 1,15,000 , MPa –760 Psi – 52,000 , MPa – 350 40%

Equivalent Grades for B3 Hastelloy Industrial Pipe Flanges

Hastelloy B3 2.4600 N010675

Alloy B3 Flanges 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

Hastelloy B3 Pipe Flanges Test Certificates

We at Ninthore Overseas 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 Ninthore Overseas 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


• 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)