Applications, Specification and Benefits of Al6XN Tubing

AL6XN Tube is known for its amazing corrosion resistance property. Because of its high strength, weldability, formability and magnificent corrosion resistance, it is widely used. Owners can establish an accurate return on investment, as it offers a stable and reliable value. The loss in unplanned downtime, cost of maintenance and product loss with AL-6XN also contribute to this value.

AL-6XN Tubing is commonly used for its unique mechanical properties. It contains density (kg/m3) 8.055 gm/cm3. Because of its Tensile strength and Electrical Resistivity which is 8.89 x 10^ -7 Ω⋅m, AL-6XN Tubing offers satisfactory outcome.

AL-6XN Tubing alloys with Carbon (0.03 max), Phosphorous (0.04 max), molybdenum (6– 7), Silicon (1.00 max), Manganese (2 max), Copper (0.75 max), Chromium (20.0 – 22) and Iron.

Applications of Al6XN Tubing

AL6XN Tube is widely used in petrochemical, power generation, Gas Tube, Heat exchanger, Fluid Tube,

Oil Tube, Boiler. Apart from this, it is also being used in chemical industries, petrochemical, ore, power generation etc. Use of AL6XN Tubing in thermal processing applications is also increasing each passing day. It is used in Heat exchangers, Agitators and mixers, biopharma tanks and fermenters, Reverse osmosis, FGD scrubbers, Distillation columns, desalination, Pressure vessels, Manways, Seawater coolers in nuclear plants and many thermal processing applications.

Special Features of AL6XN Stainless Steel Tubing

AL6XN Stainless Steel Tubing is known for its high strength, excellent corrosion resistance property and many more features which are as follows-

  • AL6XN Gas Tube is one of the best Stainless Steel Tubing which has high strength and rigidity.
  • AL6XN has high weldability, It meets all the welding standards which can be welded using any welding techniques.
  • AL6XN Stainless Steel Tubing has outstanding corrosion resistance property at high temperatures to crevice corrosions.

Why you Should use AL-6XN and its Benefits?

AL-6XN is the primary choice of the customers, because, it is a super austenitic alloy which exhibits excellent resistance. At the time, when a high concentration of chlorides, acidic pH levels, high temperature, and time of contact is introduced to the process, AL-6XN comes in 300 alloys series which include 316L/1.4435 and 304. ASME BPE standards accredited this alloy AL-6XN. The use of this alloy is rapidly increasing, because it offers a good return on investment by decreasing the loss of product and maintenance time repairing and replacing corroded parts. Because of many reasons, AL-6XN alloy attracts too many industries, it exhibits excellent corrosion resistance, cost-effective and easily available. The reason why industries prefer this alloy is that it offers a high return on investment and resistant. In 304 and 316 stainless steel, AL-6XN alloy exhibits strongest corrosion resistance in the forms of the crevice, pitting, and stress corrosion cracking.

  • This alloy is very useful as it is resistant in hot and cold conditions to corrosion from different acids and salt solutions.
  • It provides many cost benefits.

Classifications of AL6XN Tube

AL6XN Seamless and Welded Tubes are classified into followings tubes-

  • AL6XN Welded Tube
  • AL6XN Seamless Tube

Final Take

In today’s market, there are many kinds of super austenitic, nickel-based alloys are available which offers excellent corrosion resistance. But other than corrosion resistance, many other factors should also be kept in mind while selecting such alloys. Good mechanical properties, fabrication characteristics of alloy and commercial availability should also be taken into consideration.

Strength, Uses and Properties of 4130 Tubing

Steel is an alloy of iron and carbon which is considered as the strength of almost every city. Because of its high tensile strength and low cost, it is used in ships, trains, buildings, infrastructure, cars, machines, electrical appliances, Aircraft & Aerospace and in many other fields. Due to its versatile properties, it is influencing the world of metal. It is highly beneficial and has a high-strength application that is why it has been outlined in several grades of steel including 4130 tubing which is built for specific uses by American Iron Steel Institute (AISI) and Society of Automotive Engineers (SAE). These are classified into 3 to 5-digit identifiers.

Because 4130 steel has an excellent strength-to-weight ratio and is considerably stronger and harder, it is commonly used alloy steel for many projects. 4130 tubing is not only harder than 1026 tubing but also has low carbon content, and its machines as quickly as 1018 carbon steel tubing. The only reason why 4130 tubing is the primary choice of the clients is that it is highly effective, flexible and provides many fabrication advantages. In this article, we will explore the strength and properties of 4130 steel. Besides this, this article will also help readers regarding why they should select 4130 steel and whether it will be fit for their specific jobs or not.

Industries Using 4130 TUBING –

The industries, which are using 4130 tubings are as follows-

  • Military
  • automotive
  • machine tools
  • auto racing
  • Aircraft
  • Hydraulic lines and tools
  • motorcycle and bicycle frames

Know About The 4130 Steel’s Strength and Properties-

The AISI and SAE outline 4130 steel for its specific uses. The class of steel is designated by the alloy’s first digit, which includes one of its major alloying component(s). In contrast, the second digit represents the relative percentage of the alloying element. The last two digits represent the carbon concentration by 0.01%. 4130 steel is considered the part of the chromium-molybdenum steels with approximately 1% molybdenum/chromium. This high strength steel also includes 0.30% carbon. As per the study, it is found that 4130 steel is alloyed with 0.28 – 0.33% Carbon, 0.7 – 0.9% Manganese, 0.15 – 0.35% Silicon, 0.8 – 1.1% Chromium, 0.15 – 0.25% Molybdenum, less than and equal to 0.035% Phosphorus and less than and equal to 0.04 % Sulphur.

4130 steel is one of the best examples of low carbon steel; it has 0.28 – 0.33% Carbon with tolerance. It is useful in many ways, as it is 7.85 g/cm3 (0.284 lb/in3) in density and provides advantage from its heat-treatment hardening. The best thing about 4130 steel is that it is weldable in all commercial methods, and it can be easily machined in its tempered condition.

Final Take

4130 steel is one of the strongest and harder steels with excellent strength. It has 205 GPa of modulus of elasticity and it cannot be bent easily and can return to its original form which is considered a great characteristic. The main objective of 4130 steel is to remain rigidly in place. Therefore, it is the primary choice of industries.

A Brief Guide to AL-6XN Alloy

The AL-6XN alloy was originally designed to be a material with resistance to seawater. Since its creation, it has proven to be resistant to a lot of different corrosive environments. The resilience, corrosion resistance, and durability of this material make it ideal for various applications. It proves to be a better and more cost-effective alternative to more high-end nickel-based alloys.

Applications of AL-6XN

The high content of nickel and molybdenum offers more resistance to corrosion and cracking caused by chloride stress. Copper content has been kept at a residual level for better performance in seawater applications. Moreover, the composition of high allow in the AL-6XN alloy tubing protects from crevice corrosion and pitting corrosion. Following are some of the major applications of AL-6XN alloy –

  • Water piping systems for nuclear power plants
  • Process systems for offshore gas and oil platforms
  • Chemical process pipelines and tanks
  • Heat exchanger, condenser, piping for crude oil or seawater storage
  • Vats, press oils, filter washed in pulp bleaching plants
  • Tall oil distillation packing
  • Transformer cases that are exposed to marine water
  • Food processing equipment
  • Pharmaceutical equipment
  • Power plant fuel as a scrubber

Benefits Of Using Al-6xn Alloy

Following are some of the main benefits of using AL-6XN alloy tubing –

  • It is Cost-Effective

It is often used as an effective alternative to non-metallic materials. The latter materials offer high corrosion resistance but come with high installation and maintenance costs. However, AL-6XN alloy has considerably fewer expenses than a lot of nickel-based alloys.

  • It Offers Resistance to Corrosion

This alloy offers high corrosion resistance in acidic as well as alkaline environments. This ability offers protection against contamination and quick degradation of alloy-based components.

  • It Comes with As-Welded Specifications

AL-6XM features low carbon and high nitrogen contents. This mitigates the carbides precipitation and secondary phases while welding. Therefore when suitable metal is being used, and the assembly is properly cleaned, as-welded materials can be placed in the process. This alloy can be efficiently welded into the field through a similar procedure used in other austenitic stainless steel.

  • It is Highly Functional

The sturdiness and ductility of the AL-6XN alloy make the fabrication process easier both in the shop and field. The weldability and formability of the alloy are significantly better in comparison to duplex stainless steel or high alloy ferritic. And these materials offer similar corrosion resistance abilities.

Final Thoughts

AL-6XN alloy has an extensive application as it is denoted as a 6% moly super austenitic alloy offering chloride resistance found in sports brine, active pharmaceutical substance, barbecue sauce, and ketchup. Moreover, this alloy is an upgrade to 300 series alloy like 3014 and 316L/1.4435. It is identified as the UNS or Unified Numbering System designation of NO03867.

It contains 24% nickel, 6%molybdenum, 22% chromium and 10% nitrogen. There are many manufacturers who offer AL-6XN alloy tubing, but it is up to you to make an informed decision. Ensure that you choose a reputable manufacturer who uses the right chemical composition and high-quality raw materials to make the tubing.

Chromium Molybdenum for Tubing: What Is It and How Does It Fare?

There are many different materials for tubing, and your choice ultimately depends on either what your business needs or what will work best for your situation. Some of the most popular materials for tubing include stainless steel, titanium, and nickel. There is one material in particular, however, that has its slew of benefits and stands out in a couple of unique ways, yet there is often some confusion and misconception behind it. It is called chromium molybdenum, but, as a matter of fact, it goes by a handful of different names.

What is Chromium Molybdenum?

Chromium molybdenum is a material composed of the two titular elements in its name. Chromium, used in metal, is hard, shiny, and appeals cosmetically. Chromium is also used to make other alloys including stainless steel. Molybdenum is a light silver metal that makes the tubing ductile and resilient to corrosive substances. Together, they create an alloy that is strong, hard, rigid, resistant to corrosion, durable, and easy to fabricate.

Manufacturers, distributors, or merchants sometimes combine the two words and call it “chromoly”, “chromalloy”. or “chromimoly”. Some will even just combine their Periodic table abbreviations: CrMo. Regardless of what you or your provider calls this metal, it is associated with a four-digit code “4130”, which is a number assigned by The American Iron & Steel Institute. This code consists of two parts. The number “41” refers to a lot-alloy steel included in both these elements. The number “30” refers to the alloy’s carbon content, meaning that it contains a content of 0.30 percent. Thus, a low-carbon steel with a carbon content of 0.3 percent will happen to be 4130 tubing.

Chromium molybdenum is considered a high-quality metal with many advantages, but that also means the price for it is higher than other metals. Many buyers, though, have been willing to pay that price, knowing they have an alloy that works great and does not falter.

Uses for Chromium Molybdenum

Due to the durability and visual appeal of chromium molybdenum, it has a wide range of uses inside and outside industrial settings.

Conventional Pipes

4130 tubing is capable enough of transferring liquid and gas from one place to another. Ideal for housing, boilers, and other important purposes, this tubing will be greatly beneficial in the sense that it will last for a number of years and will not rust doing so.


4130 is tough enough to be able to crush stone, earth, and other hard material. This alloy can be used to make blades, teeth, and other devices as part of a machine that can cut or break apart said materials.

Vehicle Assembly

Chromium molybdenum is used to make parts both for automobiles and bicycles. The alloy can easily be welded to make car bodies, but it can also be used inside of vehicles for parts that are designed to withstand fluids and last a long time without wearing out. Chromium molybdenum is highly dependable in these regards. Bike frames can also be made from 4130 tubing.

Power Tools

Chromium molybdenum can also be made into parts for power tools, especially drill bits and taps. This alloy is a strong, tough material that can pierce or drill through softer materials, such as wood or drywall, with enough torque.


Chromium molybdenum is a metallic alloy that is highly durable and strong, used for many different purposes. It is classified by a scientific code of 4130, and goes under several different names. Consider buying 4130 tubing for what you need inside or outside any industrial setting.


Infographic: 7 Benefits of Stainless Steel


Stainless steel is commonly used in numerous applications. There numerous benefits associated with stainless steel which make it an ideal material for use in various applications. It includes highly corrosion-resistant chromium. If you need resistance in a pure water environment, then lower alloy grades are suitable for use. Stainless steel with alloyed nickel grades and high chromium ensures that high strength is retained. It checks scaling at extremely high temperatures also. Stainless steel as a material is highly affordable and has an extended life expectancy. Continue reading “Infographic: 7 Benefits of Stainless Steel”

How To Buy The Best Stainless Steel Pipes?

Are you in search of the best quality of stainless steel pipes for use in a project? If you are, then you need to stick to the basics. First and foremost, find out what size of stainless steel pipe you require for the project. All pipes made from stainless steel are not of the same type. They have various shapes, measurements and applications. Take into consideration the measurement of the pipe which you want to buy. Tubing can be measured by the nominal inner diameter, or length and pipe schedule. Continue reading “How To Buy The Best Stainless Steel Pipes?”

4 Industrial Uses of Stainless Steel

Steel is used as a raw material in a wide range of industrial processes. From zippers to skyscrapers, stainless steel is an indispensable part of our daily life. There are more than 150 varieties of stainless steel, out of which 15 are used in industrial applications. 316 stainless steel tube suppliers provide stainless steel tubes that are commonly used in the metal tubing industry. Stainless steel is used in different forms such as plates, bars, sheets and tubings. Continue reading “4 Industrial Uses of Stainless Steel”

3 Things To Consider When Choosing A Stainless Steel Tube of Right Grade

Stainless Steel Tube

Are you looking for a high-quality stainless steel tube for use in your factory? To ensure that you buy a good one, you need to have a good knowledge of the different grades of stainless steel. If the application requires good formability, don’t opt for a martensitic group of stainless steel. Instead, go for an austenitic grade of stainless steel such as 304 or a ferritic grade like 430. Continue reading “3 Things To Consider When Choosing A Stainless Steel Tube of Right Grade”

Alloy Steel

7 Essential Facts You Should Know About Alloy Steel

Alloy Steel

Alloy steel is a type of steel which contains different elements like nickel, silicon, copper and manganese. Elements like nickel, copper, cobalt and copper help to increase the temperature range between which austenite exists. Minor metals such as titanium and zirconium create carbides that increase the strength and hardness of steel. Silicon, molybdenum and aluminum extracts can decrease the effect of solubility of carbon. Cobalt, nickel and silicon can reduce the carbide stability of steel. This causes breakdown and creation of new graphite. Continue reading “7 Essential Facts You Should Know About Alloy Steel”

5 Common Applications for Stainless Steel Tubes

A variety of industries depend on stainless steel tube for different applications. Its versatility makes it the best choice for different applications. With the application of nickel, molybdenum, and chromium in various amounts, manufacturers come up with different grades to suit different purposes.

The use of stainless steel tube in the different industries is mainly supported by the fact that it is low maintenance and doesn’t affect the metals and other materials it comes in contact with. Let us take a look at the most common applications for these pipes.

High-Pressure Applications

In factories where liquids are pumped through at high pressure, stainless steel is the best material to use. The grade may vary depending on the pressure that will be passed through the pipes. Some of these may be welded together while others are seamless and there are some grades that can handle high temperatures combined with high pressure.

Aviation Application

Different parts of an aircraft will utilize stainless steel. The engine probably uses the most steel, especially where high temperatures will be experienced. The kind of steel used usually has a composition of chromium and nickel. Aircraft engineers prefer lighter steel which is also strong. 304 is a common grade used for tubing and wiring. The jet engine utilizes 321 grade because of its high resistance to temperatures that reach 1500°F. it is also used for the exhaust ducts. Other grades commonly used are 316 and 430.

Food Processing

In industries that deal with food as well as pharmaceuticals, stainless steel tubes are used because they do not contaminate the food. Nothing in the steel will sip into the food so it will remain safe and clean. Any process that needs to maintain the purity of the substance that washes through the pipes can use stainless steel. 304 grade is a common food grade steel that is used for this purpose. However, sometimes it has to be substituted for a more corrosion-resistant grade like 316 which can even withstand acidic chemicals and heat without getting corroded.


The mining process uses a lot of pipes. In most cases, these pipes need to be corrosion resistant as well as withstand high pressure. Stainless steel pipes meet those criteria and that is why they are used. For offshore mining, alloys that contain molybdenum can provide good piping without getting affected by the salty water. Sometimes the pipes through which the oil is transported need to be heated to keep the crude oil in liquid state, this requires pipes that can withstand repeated exposure to heat.

Decorative Application

In construction, stainless steel pipes provide decorative railing because of their shiny nature. Various grades have this property and at times it depends on what one is ready to pay to have a particular grade. At the same time though, they need to consider where the pipes will be placed. Some places may expose the pipes to a higher degree of corrosion.

There are many more applications for stainless steel pipes, but these 5 are the most common. Sometimes, a special grade of steel can be made for special projects. You would need to ask the manufacturer about having that done.