Tag: Flanges

monel alloys
Written by Raaj Sagar Steels18Jan, 2022

Guide to Monel 400: Insights and Advantages

Before getting into the crux of the matter i.e., getting to know the Benefits of using Monel 400 alloy, let us have a brief overview of what exactly does “Monel alloy” means.

Monel Alloys- Description, definition, overview:

Monel Alloy is an amalgamation i.e., a perfect mix of elements such as nickel and copper. Monel alloys were mainly discovered with the sole purpose of defending the components used in various applications from corrosive media. 

The most commonly used and worldwide recognized grade of Monel Alloy is the Monel alloy 400. 

Monel 400 Threaded Fittings is generally referred to as a binary alloy (Ni-Cu). This grade of Monel alloy was first made in a nickel lab in the early 1900’s. The name Monel has descended from that of the president of the company that discovered the Monel alloy. 

Monel 400 alloys contain 60-65% of nickel and copper. Thus, the major components or composing elements are nickel and copper. Besides these, elements including iron, manganese, carbon, silicon, etc. are used. 

How does Monel alloy work compare to stainless steel?

When directly compared with the alloying composition, properties, and applications of Stainless Steel grades, Monel alloys are harder to machine and work with as they harden quickly. 

In what forms can one find Monel 400 alloy?

Monel 400 alloy just like stainless steel, carbon steel, and other materials and alloys is available in numerous forms including flat bars, shields, rods, round bars, etc. Monel 400 bars have a good strength-to-weight ratio and thus can be used in heavy gauge applications demanding light-weighted components. 

Direct comparison between Stainless Steel and Monel 400 Alloy:

  • Both stainless steel and Monel alloys can be cold worked with ease. 
  • SS grades such as 316 have exceptional thermal expansion similar to that of Monel alloy grades. Monel 400 alloys can withstand extreme temperatures above 1000 degrees Celsius.
  • The heat tolerance of Monel alloys is two times that of SS grades.
  • Monel alloys outshine and outperform stainless steel even in terms of corrosion resistance and high-temperature applications. 

Applications and Uses of Monel 400:

  • Marine engineering
  • Chemical industries
  • Valves
  • Pumps
  • Shafts
  • Fittings
  • Fasteners
  • Heat exchangers
Inconel 625 Flanges
Written by Raaj Sagar Steels24Sep, 2021

Quick guide to Inconel 625 Flanges

Inconel is a nickel-chromium alloy 625 is used for its high strength, excellent, fabricability (including joining), and out-standing corrosion resistance. Inconel belongs to the so-called ‘super alloys’ group, which includes especially austenitic nickel-chromium-based alloys. Temperatures in use vary from cryogenic to 1800°F (982°C).

Inconel 625 is made or processed from the stiffening effect of nio-biumon and molybdenum, its nickel-chromium matrix; thus precipitation do not require hardening treatments. This blend of elements is also responsible for excellent resistance to a wide variety of unusually harsh corrosive conditions, as well as high-temperature effects such as oxidation and carburization.

What are Inconel 625 Flanges

A flange is a device used to connect pipes or tube, valves, pumps, and other pieces of equipment to develop a piping structure. It also allows for simple washing, inspection, and alteration. Flanges are welded or screwed. Flanged joints are created by bolting two flanges together with a gasket between them to provide a seal.

One of  benefits of Inconel is its potential to be used under severe environments. Such extremes are either high temperatures or heavy pressure. This is because when Inconel is exposed to very high temperatures, it forms a very stable oxide layer, which prevents the metal’s surface from further corrosion.

High temperatures or high pressure are examples of those extremes. This is due to the fact that when Inconel is exposed to very high temperatures, it forms a very durable oxide coat, which protects the metal’s surface from further corrosion.

Inconel flanges have great oxidising and decreasing content of corrosion resistance, making them ideal for a variety of high corrosive applications. It is used in chemical processing applications due to its high resistance to sulphuric acid and hydrochloric acid. Inconel valve flanges are widely found in fuel and water pipelines. It has a longer operating life and is therefore less expensive to maintain.

Inconel 625 flanges are in a variety of configurations, including 

  • Slip on Flange
  • Weld Neck Flanges
  • Flanges Reduction
  • Socket Weld Flange
  • Threaded Flange
  • Blind Flanges
  • Lap Joint Flanges, and more.

Inconel 625 Flanges are the most prominent and durable corrosion-resistant alloy. After being diluted and partly oxidised, it has a very high corrosive resistance. They are limited, and the fastener are only produced in larger diameters.

Benefits of Inconel 625 Flanges

  • Corrosion resistance
  • Mechanical properties at high temperatures is excellent
  • Suitable for sulphuric and hydrochloric acid environments.
  • Outstanding resistance to stress corrosion cracking.

Applications Inconel 625 Flanges

Inconel 625 flanges are used in Chemical industries, Oil and gas factories, gas processing industries, petrochemical industries, food processing industries, sugar industries, power generation industries, and fertiliser industries etc.

Inconel 625 Flanges has a range of applications that has a wide and is widely used for high performances equipment. It is popular to find it in chemical and pressure vessel, pump motor shafts, steam turbine and also in Turbine blades, combustors and seals in oil and gases industries.

When it comes to highly critical uses, 625 Flanges is also one of the key components of nuclear pressurised water reactors.

Inconel 625 Flanges are more durable and robust flanges which are mostly applicable.