Waverley Brownall

Our philosophy is dominated by quality.

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Alloy 625 Fittings, Inconel 625 Super Alloy

Alloy 625 Fittings, Inconel 625 Super Alloy

alloy 625 fittings

Alloy 625 fittings and valves are available from our Super Alloy range. Many special metals with various strengths and benefits are available. We hold stock of raw materials and can manufacture to order for compression tube fittings, pipe fittings or flow control products such as block and bleed valves.

Questions? Email us

enquiries@waverleybrownall.co.uk

Alloy 625 Fittings: Properties

There are many benefits to using alloy 625, otherwise known as Inconel 625 as a material for pipe fittings. Here are the main factors:

  • Alloy 625 is a nickel-based super alloy.
  • Super alloys are defined by characteristics such as high corrosion resistance, stability and strength.
  • Alloy 625 has excellent resistance to oxidation
  • Pitting and crevice corrosion resistance
  • Inconel alloys are frequently used for high temperature applications
  • Used in extreme environments: Natural gas processing, turbocharger rotors, gas turbine blades and in the chemical industry.
  • Non-magnetic and spark resistant
  • Resistant to stress corrosion cracking
  • Excellent fabricability
  • High strength

A Guide To Aqueous Corrosion Resistance For Inconel 625

Organic Acids Alkaline /Salts Sea

water

 Sulfuric Acid Hydrochloric Acid Hydrofluoric Acid

Phosphoric Acid

 Nitric Acid

Chlorine (wet)

A

A

A

A

A

B

A

B

B

A = Excellent, B= Good, C= Acceptable, D = Not Recommended

*Table should be used as a guideline only. Please consult a professional at Waverley Brownall

Industry Application Of Inconel 625

aerospace industry

Alloy 625 has many features that make it high-performance for many applications. Industries that use alloy 625 include: Aerospace, Chemical, Offshore and Marine, Nuclear, Oil and Natural Gas.

Inconel 625 is a good choice for the Offshore industry as in environments with seawater, fresh water and natural salts there is almost no attack. Alloy 625 is part of a broad range on Inconel alloys that are popular within the Aerospace industry. In fact, Inconel alloy 718 has been used by SpaceX for the new SuperDraco engine.

We can generally quote deliveries of less than 8 weeks for alloy 625 raw material, fittings and valves.

SEND AN ENQUIRY

enquiries@waverleybrownall.co.uk

Feel free to speak to us about any bespoke fittings you may require in Inconel 625.

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Titanium Used On Juno SpaceCraft

Titanium Used On Juno SpaceCraft

The spin-stabilised spacecraft Juno has been built with the mighty task to orbit planet Jupiter.

NASA have issued fantastic information reagrding the spacecraft and its travel – including the ability to track Juno’s position using their website. ​

Launched near 5 years ago, we’re right on time as Juno enters orbit around Jupiter.

Titanium And The One Giant Leap For Mankind

This alloy has long been known for its incredible strength.

juno spacecraft jupiter

It provides fantastic resistance to challenges on our planet – such as seawater corrosion.

However, one area we rarely hear about is its durability on spacecraft structures.

Titanium has high strength compared to its weight, but this isn’t the only reason why it is used so often in the aerospace industry.

​The Properties Of Titanium

This metal has the ability to withstand some very high temperatures. As you can imagine, in space, it is essential for materials ​to withstand incredible atmospheric pressures. Although Juno won’t face the same temperature problems as low-Earth orbiting crafts and satellites will, it will be experiencing a lack of sun radiation.

At the centre of Juno, sits the vehicle’s electronics vault that protects the precious electrical set-up from the harsh environment surrounding it. ​Juno will need to endure not only cruising through deep-space, but it will need to endure flying through Jupiter’s intense radiation belts.

Juno’s radiation vault is made of titanium alloy with a thickness of one centimeter.​

The top deck of Juno is planned to receive a radiation dose of 22 Mrad, showing the amazing shielding capability of the vault.

Titanium In Space

Did you know?

Titanium Grade 2

titanium grade 2 alloy

Waverley Brownall are proud manufacturers of fittings and valves in Grade 2 for uses in the aerospace, oil and gas, chemical and processing industries.

For more information on our special metals, email: enquiries@waverleybrownall.co.uk

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Corrosion Resistant Alloys In The Marine Industry

Corrosion Resistant Alloys In The Marine Industry

Corrosion resistant alloys are used extensively within the marine industry.

Applications where seawater is present requires tough alloys that are able to withstand corrosive surroundings.

Corrosion Resistant Alloys

Seawater can have devastating effects on metals such as iron where the surface of the metal will be attacked relentlessly. However, certain high-performance metals will give longevity and durability if they hold a number of certain properties.

Inconel and Monel are two special metals that perform highly within the marine industry. This section will cover the advantages of using these materials within fittings and valves in an aqueous environment.

Monel 400 Alloy

The nickel-based alloy MONEL 400 offers high strength and of course, corrosion resistance. It is an excellent choice for applications where seawater will be attacking the metal fitting, tube or valve.

Inconel 625 

INCONEL 625 offers high resistance against pitting and crevice corrosion. Its high tensile strength makes it the perfect alloy for items such as propeller blades. Inconel 625 ranks within Class I of alloys that are most resistant to the marine environment.

stainless steel tube fittings

625 has good corrosion fatigue strength when seawater is present. Poorer performances will be seen from alloys such as k-500 or x-750, however, this is in regard to evidence of pitting within stagnant seawater.*

* Versatile Corrosion Resistance of INCONEL alloy 625 in Various Aqueous and Chemical Processing Environments, Presented by Inco Alloys International Inc.

Titanium 

Titanium is another metal that holds corrosion resistance properties. It can resist the effects of corrosion within fresh water or steam in temperatures up to 316°C. The temperature of resistance for seawater sits at 260°C. Deposits from marine environments may form, but pitting and crevice corrosion will be completely absent from the alloy itself.

Titanium is considered to be one of the best metals for seawater elements, it is perfect for splash zones and ASTM Grade 2 is essentially immune to seawater stress corrosion cracking. *Offered as a material for fittings and valves by Waverley Brownall.

This hardy material is known for its expense, but alloys with such strong resistances are an investment for the long-term health of structures such as offshore platforms as fatigue will not be an issue with the presence of seawater.

We offer material choices such as Hastelloy C276 and Incoloy 825.

In flowing and stagnant seawater conditions, Hastelloy C276 and Inconel 625 materials give excellent corrosion resistance. Inconel 825 can be susceptible to bio-fueling.

Corrosion Prevention

sailing boat water

Corrosion resistant alloys do not need the consistent maintenance or treatments that other metals may require. Titanium or other metals that work well within the marine industry are investments that will secure health, safety and efficiency of the application in question for years to come.

It is cost-effective for companies in the long term, considering maintenance costs and installation replacements are virtually non-existent within a much longer time frame.

Some fittings manufacturers will charge for a full replacement of tube and fitting after 5 years – with alloys such as Titanium, this will be prolonged substantially.

Titanium alloys are known to be difficult-to-machine materials, which causes an even higher price-tag for fittings and valves. However – Waverley Brownall have been machining titanium alloys for over 40 years with specialist knowledge.

We are happy to take orders for titanium fittings for companies who are willing to invest in this incredible solution.

Types Of Corrosion Within A Marine Environment

seawater
  • Galvanic corrosion
  • Intergranular corrosion
  • Stress corrosion cracking
  • Crevice corrosionm
  • Erosion corrosion
  • Marine growth

Seawater environments can be divided into three main zones.

Zone 1) The first zone covers alloys that are fully immersed or continuously submerged.

Zone 2) Partially immersed such as tidal environments and splash zones .

Zone 3) Zone 3 covers corrosion that is predominantly due to the surrounding environment. As an example, this covers atmospheric and subsoil factors.

Zone 1, Submerged – The main elements that will impact the level of corrosion are temperature, oxygen levels, bio-fueling and pollution. For example, with our standard stainless steel products, pitting and crevice corrosion are the most common concerns for 316 in Zone 1.

For Zone 2 (partially submerged) for areas such as the splash zone, stainless steel has a much higher pitting corrosion rate due to oxygen exposure.

Alloy Selection For The Marine Industry

Do you require more information on the selection of special metals for a range of industries?

We are offering our readers a FREE GUIDE to assist you!

high performance alloy

A Guide In The Selection Of Special Metals

FREE GUIDE
Posted for free directly to your address
Presented by Waverley Brownall Limited

Your A5 sized handbook will be posted to the address that
you fill out and submit in the form.  

Your guide will include:

  • Corrosion by acids
  • Corrosion by alkali and salts
  • Aqueous corrosion resistance chart
  • Material composition chart
  • The benefits and properties of each metal we offer