Inconel 825 Flanges are corrosion-resistant, specialized pipe connectors that join two pipes together. The flange is typically made from an alloy of nickel and chromium with added molybdenum, titanium, aluminium and copper for increased strength and resistance to oxidation. They provide a seal that can withstand extreme pressure while resisting cracking or splitting from environmental factors such as heat, humidity and oxidation. They are commonly used in cryogenic applications because they protect against corrosion caused by acidic environments.

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UNS N08825 flanges corrosion Resistance

High Nickel Alloy 825 is a nickel-iron-chromium alloy with excellent corrosion resistance in oxidizing and reducing environments. Weldneck flanges overlaid with an Inconel 825 cladding offer exceptional corrosion resistance to corrosive chloride environments, such as seawater and brackish water. Moreover, these weld neck flanges have superior heat resistance, making them suitable for applications up to 600°C (1112°F).

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825 Inconel flanges Machining

Machining of ASTM B425 UNS N08825 Flanges is a process in which metal components are cut to exact specifications using cutting tools. The most common type of machined flange is the Weldneck Flange, which consists of an alloy such as Inconel 825 that requires specialized cutting tools to be machined successfully. This process involves grinding and/or milling the surface for accurate size and shape, drilling holes for mounting purposes, etc. The original design requirements are met with precision and accuracy for a strong and reliable product.

Incoloy 825 Flanges

Incoloy 825 Flanges

Inconel Alloy 825 flanges chemical composition

Alloy 825 flanges are a type of weld neck flange made from nickel and chromium alloy, making them highly corrosion-resistant. It also has additions of molybdenum, copper, and titanium that give it excellent strength at high temperatures and good metallurgical stability and formability. Inconel 825 is a versatile material for many applications due to its exceptional properties, such as resistance to pitting, stress-corrosion cracking, high-temperature strength and elevated thermal conductivity.

Inconel 825 flanges heat treatment

Heat treatment of Inconel 825 flanges involves a process of heating and cooling them in order to achieve desired properties. Heating at high temperatures (1000°C- 1200°C) for 1 hour or more followed by rapid quenching is done. This improves the fatigue strength, stretching limits, hardness and ductility. Finally annealing is done at 600-650°C for 4 hours to improve ductility and corrosion resistance characteristics. Proper heat treatment of Inconel 825 flanges must be conducted as it helps enhance the mechanical properties significantly making it one of the most used materials in various types of engineering applications.

Inconel 825 flanges Uses

Inconel 825 Alloy are mainly used for high-temperature applications in petrochemical, chemical and power generation industries. They are especially useful for connecting pipes that require Weldneck Flange connections due to their extremely strong construction, corrosion resistance and heat-resistant properties. Inconel 825 Flanges also feature exceptional strength-to-weight ratio and machinability, making them ideal for many industrial applications.

What is incoloy 825 Flanges?

Incoloy 825 Flanges are a type of flange made from an alloy of nickel & iron. Incoloy 825 Flanges can also be used in chemical manufacturing plants, power generation & desalination systems. They provide excellent durability due to their non-magnetic properties, making them ideal for applications requiring high accuracy and precision.

What is the difference between Incoloy 825 Flanges and Inconel 825?

Incoloy 825 Flanges & Inconel 825 utilize a nickel and iron-based alloy also there are some critical differences between the two. Incoloy 825 Flanges offer better corrosion resistance & pressure than Inconel 825, making it ideal for use in oil & gas industry applications. Incoloy 825 Flanges is more cost-effective than Inconel 825 due to its lower manufacturing costs.

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Incoloy® Alloy 825 Socket Weld Flanges Specification

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 1/2″NB TO 60″NB

Class / Pressure 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.

Flange Face Type Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)

Grade 825 UNS (N08825), DIN (2.4858)

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Incoloy 825 Flanges Equivalent Indian Standard

STANDARD UNS WNR. AFNOR EN JIS BS GOST OR
Alloy 825 N08825 2.4858 NC22DNB4M NiCr22Mo9Nb NCF 825 NA 21 ЭП703 ЭИ602

ASTM B564 Incoloy® Alloy 825 Forged Flanges Chemical Composition

Grade C Mn Si S Al Ti Fe Ni Cr
Incoloy 825 0.10 max 0.50 max 0.50 max 0.015 max 0.40 max 0.40 max 5.0 max 58.0 min 20.0 - 23.0

825 Incoloy ASME SB564 Threaded / Screwed Flanges Mechanical Properties

Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
8.4 g/cm3 1350 °C (2460 °F) Psi - 1,35,000 , MPa -930 Psi - 75,000 , MPa - 517 42.5 %

Other Types of 825 Incoloy Industrial Flanges

  • Incoloy 825 Slip On Flanges
  • 825 Incoloy® Pipe Flanges
  • Nickel Alloy 825 Blind Flanges
  • Incoloy® Alloy 825 Orifice Flange
  • Incoloy Alloy 825 Long Weld Neck Flanges

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