# Nitronic > Mediated Wiki article. Canonical URL: https://mediated.wiki/source/Nitronic > Markdown URL: https://mediated.wiki/source/Nitronic.md > Source: https://en.wikipedia.org/wiki/Nitronic > Source revision: 1334881803 > License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) {{short description|Stainless steel alloy trade name}} {{for|the nitronic acid [functional group](/source/functional_group)|Nitronate}} {{Use mdy dates|date=August 2024}} '''Nitronic''' is the trade name for a collection of [nitrogen](/source/nitrogen)-strengthened stainless steel [alloys](/source/alloys). They are [austenitic](/source/austenitic) [stainless steels](/source/stainless_steels). ==History== Nitronic alloys were developed by [Armco Steel](/source/AK_Steel). The first of these alloys, Nitronic 40, was introduced in 1961. Since 2022, the [trademark](/source/trademark) has been owned by [Cleveland-Cliffs Steel Corp.](/source/Cleveland-Cliffs), successor to [AK Steel](/source/AK_Steel_Holding).{{cite web | author =United States Patent and Trademark Office | title =NITRONIC Serial# 73219917 | date =March 23, 2022 | pages =1 | url =https://tmsearch.uspto.gov/bin/gate.exe?f=doc&state=4809:hagi3e.2.1 | access-date = January 13, 2023 }} Electralloy is the licensed producer in North America for a wide range of Nitronic products.{{cite web | url =http://www.electralloy.com/ | title =When your application is critical, when there is no room for error, your choice is Electralloy | date = 2017| website =Electralloy | quote =Electralloy is North America's exclusive licensed producer of all NITRONIC® bar, billet, coil rod, master alloy pigs and ingot products as well as NITRONIC® weld wire and weld consumables.}} The Nitronic name is due to the addition of nitrogen to the alloy, which enhances the strength internally rather than being [nitrided](/source/nitrided) on the surface, as some steel are treated. The nitrogen is homogeneous throughout the material. Nitronic materials have about twice the yield strength of [304L](/source/SAE_304_stainless_steel) and [316L](/source/SAE_316L_stainless_steel).{{cite book | author1 = C. G. Fountzoulas |author2=E. M. Klier |author3=J. E. Catalano |editor1= Dan Casem |editor2=Leslie Lamberson |editor3=Jamie Kimberley | title = Dynamic Behavior of Materials, Volume 1: Dynamic Characterization of Nitronic 30, 40 and 50 Series Stainless Steels | date = 2016 | page = 22 |publisher=Springer | isbn=978-3319411323 | url = https://books.google.com/books?isbn=3319411322 | access-date = March 19, 2017 }} ==Uses== Nitronic 30 is used to lighten transportation vehicles.{{cite web | author =Bruce Emmons | title = Ultralight Electric Bus | date = June 27, 2016 | pages = 1 | url =https://contest.techbriefs.com/2016/entries/automotive-transportation/6924 | access-date = March 19, 2017 }} Buses and railcars benefit from the high strength-to-weight ratio for weight savings. Nitronic 40 is used at [cryogenic temperatures](/source/Cryogenics).{{cite book | last =Di Giovanni | first =Mario | title =Flat and Corrugated Diaphragm Design Handbook | publisher =CRC Press | date =1982 | pages =42 | url =https://books.google.com/books?id=_74dBADQSDIC&q=Nitronic+stainless+steel&pg=PA42 | isbn =9780824712815 }} and in the aerospace industry as hydraulic tubing.{{cite book | author =Harold M. Cobb | title =The History of Stainless Steel | year =2010 | pages = 305 | publisher =ASM International | isbn =9781615030118 | url =https://books.google.com/books?id=E30rCBeM8nkC&q=nitronic+40+hydraulic+tubing&pg=PA305 | access-date = March 19, 2017 }} Nitronic 50 is used in marine environments, including boat shafting and solid rod rigging.{{cite magazine | author =Dan Spurr | title =Cruising World | date = Jan–Apr 1982 | pages = 68 | url =https://books.google.com/books?id=ZSIKlK3ZmNIC&q=nitronic+solid+rod+rigging&pg=RA4-PA68| access-date = March 19, 2017 }} Nitronic 60 and a similar alloy Gall-Tough have high resistance to [galling](/source/galling), a form of wear caused by adhesion between sliding surfaces, and metal-to-metal wear.{{cite book | last = Davis | first =Joseph R. | title =Alloy Digest Sourcebook: Stainless Steels | publisher =ASM International | date = 2000| pages =3 | url =https://books.google.com/books?id=chuUynnDVJ8C&q=Nitronic+60&pg=PA3 | isbn = 9780871706492 }}{{Cite web |last=viking |date=January 20, 2023 |title=Advantages of Using Nitronic 60 fasteners in Industrial Applications |url=https://www.zeonfasteners.com/blog/the-advantages-of-using-nitronic-60-fasteners-in-industrial-applications/ |access-date=August 18, 2023 |website=Zeon Fasteners LLP |language=en-US}} ==Composition== Nitronic alloys have widely varying compositions, but all are predominantly [iron](/source/iron), [chromium](/source/chromium), [manganese](/source/manganese) and [nitrogen](/source/nitrogen). {| class="wikitable" style="text-align: center" |- ! rowspan="2" | NITRONIC ! colspan="12" | Element (% by mass) |- ! [Fe](/source/Iron) ! [Cr](/source/Chromium) ! [Ni](/source/Nickel) ! [Mo](/source/Molybdenum) ! [Nb](/source/Niobium) ! [Mn](/source/Manganese) ! [Si](/source/Silicon) ! [C](/source/Carbon) ! [S](/source/Sulfur) ! [P](/source/Phosphorus) ! [V](/source/Vanadium) ! [N](/source/Nitrogen) |- | 30 UNS S20400 {{cite web | author =AK Steel | title = Nitronic 30 Stainless Steel | url =http://www.aksteel.com/pdf/markets_products/stainless/austenitic/NITRONIC_30_Stainless_Steel_PDB_201512.pdf | access-date = March 19, 2017 }} | Bal | 15.0–17.0 | 1.5–3.0 | | | 7.0–9.0 | 1 max | 0.03 max | 0.03 max | 0.04 max | | 0.15–0.3 |- | 32 UNS S24100 {{cite web | author =Electralloy | title = Nitronic 32 Stainless Steel | url =http://www.electralloy.com/images/pdf/Product_Sheets/Electralloy/Nitronic_32.pdf | access-date = March 19, 2017 }} | Bal | 16.5–19.0 | 0.5–2.5 | | | 11.–14.0 | 1 max | 0.15 max | | 0.045 max | | 0.2–0.45 |- | 33 UNS S24000 {{cite web | author =Electralloy | title = Nitronic 33 Stainless Steel | url =http://www.electralloy.com/images/pdf/Product_Sheets/Electralloy/Nitronic_33.pdf | access-date = March 19, 2017 }} | Bal | 17.0–19.0 | 2.3–3.7 | | | 11.5–14.5 | 0.75 max | 0.08 max | 0.01 max | 0.06 max | | 0.–0.4 |- | 40 UNS S21900 {{cite web | author =Electralloy | title = Nitronic 40 Stainless Steel | url =http://www.electralloy.com/images/pdf/Product_Sheets/Electralloy/Nitronic-40.pdf | access-date = March 19, 2017 }} | Bal | 19–21.5 | 5.5–7.5 | | | 8.0–10.0 | 1 max | 0.04 max | 0.01 max | 0.04 max | | 0.2–0.4 |- | 50 UNS S20910 {{cite web | author = Electralloy | title = Nitronic 50 Stainless Steel | url = http://www.electralloy.com/images/pdf/Product_Sheets/Nitronic/Nitronic50HS_main.pdf | access-date = March 19, 2017 | archive-date = March 19, 2017 | archive-url = https://web.archive.org/web/20170319195941/http://www.electralloy.com/images/pdf/Product_Sheets/Nitronic/Nitronic50HS_main.pdf | url-status = dead }} | Bal | 20.5–23.5 | 11.5–13.5 | 1.5–3.0 | 0.01–0.03 | 4.0–6.0 | 0.2–0.6 | 0.03 max | 0.01 max | 0.04 max | 0.1–0.03 | 0.2–0.4 |- | 60 UNS S21800 {{cite web | author =Electralloy | title = Nitronic 60 Stainless Steel | url =http://www.electralloy.com/images/pdf/Product_Sheets/Nitronic/Nitronic60_main.pdf | access-date = March 19, 2017 }} | Bal | 16–17 | 8.0–8.5 | 0.75 max | 0.10 max | 7.5–8.5 | 3.7–4.2 | 0.06–0.08 | 0.03 max | 0.040 max | 0.2 max | 0.1–0.18 |} ==References== {{reflist|35em}} Category:Superalloys Category:Aerospace materials Category:Chromium alloys --- Adapted from the Wikipedia article [Nitronic](https://en.wikipedia.org/wiki/Nitronic) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Nitronic?action=history)). 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