Come meet with us at NACE CORROSION 2017, March 28-30 in New Orleans.
David and Glenda will be at booth # 828. Please stop by and say hello. Existing and past customers have promotional items waiting for them!
If you need a complimentary pass to attend the expo booth, please ask David, Glenda or your salesperson.
As seen on Modern Metals November 2016
Nitrogen-strengthened stainless steels can provide many benefits, says Jeff Kirchner, COO of High Performance Alloys
- MM: How did Nitronic alloys get their name? Are there any common misconceptions about these grades?
Jeff Kirchner: Armco, the inventor of these grades, had several alloys. They were calling them 21-2N, 21-4N/22-4-9, and those became 21-6-9, 18-2Mn, 18-3Mn and 22-13-5. The commonality among these alloys was chromium, manganese and nickel with saturation additions of nitrogen. For marketing purposes in the 1970s, these alloys were branded as the Nitronic series and given alloy designation numbers. A common misconception is that the number relates to strength, when in actuality all the Nitronic grades have yield strengths in the 50-60 ksi range when annealed. The numbering system has more to do with the order in which the alloys were developed than with strength, so it just makes it more literal and associative to the manufacturer.
MM: What are some of the benefits of adding nitrogen to stainless steel?
Kirchner: Adding nitrogen to alloys has several effects on the properties. The most common benefit is an immediate boost in the yield strength, or the point at which a material will deform. The nitrogen also improves the impact resistance of alloys. For an example of the enhanced impact resistance, many of these grades will need to be Charpy tested at sub zero temperatures to conduct a valid V-notch test, which is where it breaks.
MM: Can you briefly touch on the different grades of Nitronic alloys, their characteristics and applications?
Kirchner: Nitronic 30 is a corrosion resistant, or basic, stainless-manganese steel, meaning it is good for abrasion resistance. It is commonly used for liners, chutes, and because of its extra strength and lightweight properties, it is now also being used for body panels in transportation. Nitronic 30 is available primarily in heavy sheet and light plate.
Nitronic 40 is a high-temperature stainless with low magnetic permeability. Common applications include instrument or hydraulic tubing, but it is also found in bar and sheet. 22-13-5 Nitronic 50 is a corrosion-resistant stainless, commonly used for saltwater and marine applications. It has a very low magnetic permeability. 18-8Mn (+Si +N) Nitronic 60 is an oxidation resistant (elevated temperature) as well as a corrosion- and wear-resistant stainless. It is well known for its resistance to wear and galling, but the composition performs well in many environments.
MM: What should material specifiers consider when questioning the applicability of Nitronic alloys?
Kirchner: The obvious advantage to the Nitronic series is an immediate increase in strength. Many times we have recommended Nitronic 60 to replace grade 304L or Nitronic 50 for grade 316L. They are basically quick upgrades with little change in their machining or processing capabilities. Another consideration is that these two alloys excel at the low magnetic permeability, but the biggest difference is the permeability doesn’t change when forming and fabricating. During forming and welding, grades 304L and 316L are known to transform some austenite to ferrite, raising the magnetic permeability. There are definitely some applications where this magnetism potential is not an issue at all, but it can be a concern if you have magnetic fields or sensitive electronics near a rotating assembly.
Nitronic 60 solves a common problem where a stainless or corrosion-resistant grade is needed that must also resist wear and galling. It is unique in that it has these characteristics and can still be formed and fabricated with a moderate price point. There are some great cobalt alloys that can be used for wear and galling and will resist staining from the atmosphere or cleaning, but these cost more as cobalt is normally above $12 per pound.
High Performance Alloys, based in Tipton, Indiana, with locations in Oregon and Texas, is a global distributor of wear-, corrosion- and heat-resistant alloys. Kirchner has been with the company for more than 25 years. Call or browse at 800/472-5569 or www.hpalloy.com.
Source: Modern Metals, November 2016
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Build the item using a top down approach. First select Alloy type from drop down, then the product form offered that you need.
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Enter the thickness of the item you want in decimal format. Then enter the length and or width according to the item need (we cut all the time, so if you need something exact - just enter it here).
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Comments cannot be automatically reviewed or priced, so if you have a tolerance or specification you can list it there - but it doesn't mean that we will accept the order when submitted. If it is out of the ordinary, it is probably best to submit as a custom quote to salesperson.
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With all that information entered, you are ready to get your price. Press the 'Get Price' button to calculate price and check stock.
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If the store cannot process a quotation for you, it provides you the opportunity to let a salesperson review it (use the email button) and quote the item. You do not have to re-renter anything. The salesperson will contact you if there are questions or concerns. If our sales is available, you can use the WebChat feature to message with them live.
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When the store is successful checking the stock available to ensure that we can fill your requirement, it will list the Unit Price and Total Price. At this point, you may add the item to your cart.
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Your terms will be shown, as well as the billing and shipping information on file for your account.
If you need more help - just ask, More help information here.
Hastelloy, Inconel, Monel, Nitronic, Nickel and Cobalt Alloys
Times are tough and you need to get that new project going. Let us help with your sample needs to demonstrate how well your idea will work! Tell us what material samples you need.
Customer service is important. We know, we have to buy products too. We have all experienced bad customer service and we know it is to be avoided. At High Performance Alloys, the service comes before the sale, with the sale and after the sale. We are extremely proud of our customer service. Here are some of the reviews we have received from customers:
"HPA has always been a trusted supplier for our Nitronic stainless steel needs. Quotations are always prompt and clear as to what is being offered if a substitution is being made. That said, HPAlloys is a pleasure to work with."
"I appreciate the ability to easily order small quantities of hard-to-find materials. I also appreciate being able to specify my desires regarding composition and mechanical properties and mostly get exactly what I need."
"Many times the order goes to the company that responds quickest. HP Alloys quotes are always quick. You don't have to nag them to get your quotes. "
"I do like that I go to the same sales rep. for each order not just another operator in the system."
"One area of concern in general with metal suppliers is the quality of packaging / protection during delivery. Your pieces arrive to our shop without marring, packaging intact and ready to machine. We are able to order closer to final dimensions when this is done which saves us time and money."
"High Performance always help us find the materials we need with the quickest turn around possible. We normally don't have a lot of time to too work with and they always seem to help us get the job done."
Still not convinced? Read more
Give us a call at +1 (765) 945-8230 or toll free in the US @ (800) 472-5569
NITRONIC: A material TradenameMaterial definition - Nitrogen strengthened stainless steel series
The NITRONIC family of alloys was developed by Armco in the 1960s. The name NITRONIC comes from the addition of Nitrogen that is added to the composition of the alloys in this series. Typically this Nitrogen addition is made to the full solubility of the alloy. There are other ways that Nitrogen is used to enhance various materials, such as Nitriding or using liquid Nitrogen as a tempering medium. Unique to these alloys is that prior to these grades being developed, adding Nitrogen to the alloy was as a by-product.
A common misconception about NITRONIC alloys pertains to the grade designation, or numbering system within the material series. Some people think the grade numbers designate the strength of the alloy. People were saying they could use 40, 50 or 60. While all three of these grades are corrosion resistant to some extent, with low magnetic permeability - they are not normally used in similar applications. They are all Nitrogen strengthened grades, which helps the impact properties and lowers the ferrite number (pushing further to full Austenitic). Read the embedded article below for more information about how each grade came along. Nitronic 60 being the last one in the series, developed primarily for heat resistance.
The primary engineer working on this project was Bill Schumacher (now retired). I reached out to Bill for a clarification of the naming and he had a great write up about it. Bill's story of "Naming the NITRONICS" follows, in its entirety.
NAMING the NITRONICSBill Schumacher, May 18, 2016
Over the years, some end users have questioned the origination of the Trade name “Nitronic”. They even speculated that it might be a reflection of the alloy's strength level. However, this is not the case. The term relates to the fact that these stainless steel alloys are nitrogen-strengthened, and thus, "nitronic".
The addition of nitrogen (N) to stainless steels has a long history dating back to the early '50's during the Korean War. To conserve on the expensive nickel (Ni) content in austenitic stainless alloys like 301 and 304, N and Mn (manganese) were added and later identified as the 200 Series grades: 201, 202 and 205. N has the most benefit to replace Ni, but the Mn was usually added to increase the N solubility so higher levels could be introduced. These changes had little detrimental effect on corrosion resistance but made the alloys functional and available at a fair price. The N was low enough to not greatly increase the strength and impair fabricability.
In some cases N was added to very high levels for high temperature strength for automotive engine valves. These were called 21-2N and 21-4N and a plate version 22-4-9. These alloys also increased the carbon level such that the C+N total = 1%. A further refinement of 22-4-9 led to 21-6-9 for sheet and strip products with intermediate N and low C levels respectively.
As markets were developed and stainless steel melting became more economical, other N + Mn alloys were developed for specific applications and not necessarily for low cost. Armco, (the original trademark owner of Nitronic), added 18-2Mn, 18-3Mn and 22-13-5 austenitic stainlesses. In the early '70's these alloys were becoming more accepted in the market, so Armco decided to streamline the names using the Nitronic trademark and help “brand” these modern alloys. Armco 18-2Mn became Nitronic 32. Armco 18-3Mn became Nitronic 33. Armco 21-6-9 became Nitronic 40 and Armco 22-13-5 became Nitronic 50. During all this name changing, a new alloy was being developed that also contained N and Mn but also a high silicon content. This alloy was released under the Nitronic name as Nitronic 60, an anti-galling grade.
All the above Nitronics have similar yield strengths of about 50-60 ksi. Later developments included Nitronic 30, a leaner version of Nitronic 33 and Nitronic 19D, a duplex stainless steel with a 50% mixture of austenite and ferrite. This last alloy also has much higher yield strength due to its mixed microstructure. The original intent of the name was to follow the level of alloy content-the lower numbers tended to be leaner in expensive elements like Ni. However, later alloys diverged from this. Nitronic 60 is not richer in alloy content than Nitronic 50 and Nitronic 19D even less so, but they both had high Mn and added N levels.
Hopefully this helps to straighten out some of the questions about the NITRONIC grades and how they were named.
NITRONIC is now a registered tradename of AK Steel.