ASTM B564 Inconel 625 Weld Neck Flanges

Flanges, made from different materials, have been a staple in various industries, such as oil and gas, chemical processing, and construction. These are crucial connections to any piping system as they facilitate easy assembly, disassembly, and maintenance. However, when opting for flanges in corrosive environments, one must choose materials that can endure the harsh effects of chemicals and extreme temperatures without compromising quality.

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Inconel 625 Weld Neck Flanges come in various types based on the facing types - raised face, flat face, and Ring Type Joint(RTJ) flanges. ASTMB564 Inconel 625 Weld Neck Flanges are commonly used as RTJ flanges, and RTJ flanges are used in critical applications such as high-pressure and high-temperature applications. The RTJ facing ensures a tight and leak-proof seal essential for applications that work with corrosive fluids and gasses.
Inconel 625 Weld Neck Flanges are designed for use in harsh environments where high strength, corrosion resistance, and a temperature tolerance of up to 1100 degree Celsius are required. They are ideal for applications where weldability is a concern, as it is difficult for other materials to weld to Inconel 625. These flanges are also used in heat exchangers, seawater piping, condensers, and valves.

The benefits of using ASTM B564 Inconel 625 Weld Neck Flanges are extensive. Besides being able to function in high-temperature and corrosive environments, they are also highly durable, which means they can last for years without requiring replacement or maintenance. Inconel retains its strength in temperatures as low as cryogenic and up to 1100 degree Celsius. Due to its excellent corrosion resistance, Weld Neck Flanges made of Inconel 625 can withstand aggressive media such as seawater, acid, and oxidizing environments. Unlike other materials, such as Stainless Steel, Inconel 625 does not experience stress corrosion in chloride environments. Weld Neck Flanges provide easy alignment, making it easier to bolt the flange to the pipework, thus reducing the risk of leakage or spillage.
The use of ASTM B564 Inconel 625 Weld Neck Flanges in various applications is essential. When dealing with corrosive media and high-temperature and pressure environments, one must go for materials that can withstand harsh conditions without losing their quality and functionality. The Inconel 625 Weld Neck Flanges are robust, durable, easy to maintain, and provide an unbeatable seal necessary to ensure efficient and safe industrial applications.


ASTM B564 Inconel 625 Weld Neck Flange has excellent corrosion resistance, high strength & good weldability, making it suitable for use in high-pressure & high-temperature applications.

The advantages of using ASTM B564 Inconel 625 Weld Neck Flange include its high resistance to corrosion and oxidation, excellent strength at high temperatures & its suitability for use in harsh environments.

ASTM B564 Inconel 625 Weld Neck Flange has a working temperature range of -196°C to 980°C (-320°F to 1800°F).

Specification of Inconel 625 Weld Neck Flanges

Spec bag
Specifications: ASTM B564 / ASME SB564
Dimensions: ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc.
Standard: ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc.
Size: 1/4" - 48"
Class/Pressure: 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.
Flange Face Type: flat face (FF), Raised Face (RF), Ring Type Joint (RTJ)

Types of Inconel Weld Neck Flanges

Inconel 625 WNRF Flanges

Inconel 625 WNRF Flanges

  • - ASTM B564 Inconel 625 WNRF Flanges
  • - N06625 WNRF Flanges
  • - 2.4856 WNRF Flanges
  • - 625 Inconel Alloy WNRF Flanges
  • - ASME SB564 Inconel 625 WNRF Flanges
  • - Alloy 625 WNRF Flanges Supplier
  • - Inconel 625 WNRF Flanges Manufacturer
Inconel 625 WNRTJ Flanges

Inconel 625 WNRTJ Flanges

  • - ASTM B564 Inconel 625 WNRTJ Flanges
  • - N06625 WNRTJ Flanges
  • - 2.4856 WNRTJ Flanges
  • - 625 Inconel Alloy WNRTJ Flanges
  • - ASME SB564 Inconel 625 WNRTJ Flanges
  • - Alloy 625 WNRTJ Flanges Supplier
  • - Inconel 625 WNRTJ Flanges Manufacturer

Equivalent Grades for Inconel 625 Weld Neck Flanges

STANDARD WERKSTOFF NR. UNS JIS BS GOST AFNOR EN
Inconel 625 2.4856 N06625 NCF 625 NA 21 ХН75МБТЮ NC22DNB4M NiCr22Mo9Nb

Alloy 625 Weld Neck Flanges Chemical Composition

Grade C Mn Si S Cu Fe Ni Cr
Inconel 625 0.10 max 0.50 max 0.50 max 0.015 max - 5.0 max 58.0 min 20.0 - 23.0

Mechanical Properties of Inconel 625 WNRF Flanges

Element Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
Inconel 625 8.4 g/cm3 1350 °C (2460 °F) Psi – 1,35,000 , MPa – 930 Psi – 75,000 , MPa – 705 42.5 %

Application Industries

  • Refineries
  • Petrochemicals Industry
  • Oil & Gas Industry
  • Mining
  • Construction
  • Pharmaceuticals
  • Automobile