Machining Nitronic Grades

Posted by Jeff Kirchner on Nov 16, 2017 2:57:00 PM


Based on 1" Dia Annealed (RB 95) 5 hour form tool life using high-speed tools. Carbide tools are suggested, for rates better than 50% of Type 304. These rates are for carbide tools, Type C-2 for roughing, drilling and reaming. Type C-3 for finishing. 

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Topics: NITRONIC 50, NITRONIC 60, NTRONIC 30, NITRONIC 40, Machining Nitronic

Manufacturing highlight: Mechanical property enhancement through the use of grain refinement

Posted by Jeff Kirchner on Feb 10, 2017 2:05:00 PM

Grain refinement

There are many applications that can benefit from grain refinement. Grain refinement is a result of specific manufacturing techniques which allow for a finer grain. In almost every case, a finer grain material will outperform a coarser grain item of the same material. The basis of finer grains being stronger is that while there are more dislocations in the material, it is more difficult to make all these dislocations line up. Finer grains also typically have less precipitates in the boundaries. Precipitates are oxides, carbon, and interstitial elements that are not in solution of the grain. Precipitates are normally not as strong as the material itself - tending to make a precipitated material more brittle.
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Topics: elevated strength materials, enhanced mechanical properties, HASTELLOY C-22, HASTELLOY C-276, INCONEL 622, INCONEL 686, INCONEL 718, L605, NITRONIC 50, NITRONIC 60, superalloy grain refinement

High Strength NITRONIC 60 Bridge Hinge Pins

Posted by Jeff Kirchner on May 12, 2016 9:00:00 AM
High Performance Alloys, a distributor of Nitronic 60 and producer of high strength Nitronic 60. This alloys makes bridge hinge pins for use in high strength applications. Nitronic 60 a chromium nickel stainless steel that is excellent for high strength situations. It also has good corrosion resistance and great galling resistance. These characteristics of the high strength steel help it to be very effective in construction projects such as bridge repairs and construction.
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Topics: NITRONIC 60, bridge hinge pin, bridge pin, gall tough plus pin, pin and hanger bridge system

Joint Strike Fighter (JSF) F-35

Posted by Jeff Kirchner on Jun 24, 2015 4:11:00 AM
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Topics: F-35, NITRONIC 60, nitronic 60 wear applications

NITRONIC 60 is out of this world

Posted by Jeff Kirchner on Sep 23, 2014 12:02:00 PM
High Performance Alloys worked with NASA on another project, one that keen observers can see in the night sky.  The International Space Station (ISS), which is the third brightest object in the night sky according to NASA, was another high-profile project for High Performance Alloys.
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Topics: NASA, NITRONIC 60, impact resistance in space, ISS

Mars Rover

Posted by Jeff Kirchner on Aug 29, 2014 6:00:00 AM

For nearly two decades, NASA has been acquiring information from rovers sent to explore the surface of Mars. High Performance Alloys played an integral role in the first Mars rover mission, Pathfinder and its successors, the twin rovers Spirit and Opportunity’s assembly.

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Topics: MarsRover, NASA, NITRONIC 60, JPL

Passivating NITRONIC 60

Posted by Jeff Kirchner on Nov 25, 2013 9:00:00 AM

Passivation of materials is needed from time to time due to potential contamination of processes, aesthetic  appearance or function within a system. It is used to remove surface contaminants from forming, machining, shot peening and heat treating. This surface preparation generally does not change the tolerances, and should not etch or pit the surface.

For aerospace applications using NITRONC 60, AMS 2700 Method 1 or 2 can be employed to clean the surfaces. Usually just a small amount of nitric will clean it up nicely in Method 1, such as a Type 1 or 6.    We have found the citric acid in Method 2 to be ineffective to sufficiently brighten the appearance, though it may be employed as a process. 

Typically, materials being removed are due to a free iron concern. Free iron from tool steels, racks for storage and rollers can leave trace amounts during transfer. The free iron then will oxidize and give the appearance that the stainless is rusting, even when it is only the surface. 

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Topics: NITRONIC 60, cleaning nitronic 60, NITRONIC 60 passivation, passivation

NITRONC 60 in H2S, NACE application

Posted by Jeff Kirchner on Apr 8, 2013 9:45:00 AM

NITRONIC 60  in H2S  has had three annealed heats (Rb95/98) tested for the NACE MR-01-75 standard, and it passed. Unfortunately, the committee wanted to see results up to Rc22 for annealed material (a larger barrage of testing) and it was never completed.

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Topics: NITRONIC 60, H2S, ISO 15156, NACE MR0175

Super Austenitic Stainless Steels

Posted by Jeff Kirchner on Dec 17, 2012 2:50:00 PM

A stainless is defined as 12% minimum Chromium, which can encompass many stainless grades. There are sub categories of this Austenitic type stainless though. Depending on the composition, some materials are more Austenitic than others; primarily due to their Nickel (Ni), Manganese (Mn), Carbon (C) and Nitrogen (N) contents. To consider this further, you need to understand the corollary to Austenite; Ferrite and Martensite are what many people are looking for when they require magnetism, or magnetic permeability. When you mix Austenite and Ferrite it is a Duplex (contains both, nearly equal amounts). A low Ferrite number generally indicates a lower magnetic permeability. Stainless that is high in Ni, Mn, C, or N or a combination thereof can be an indicator that it will have a lower Ferrite content. Some stainless steels with generous amount of these attain a negative ferrite calculation, using Schaefflers diagram you can predict these on a graph or us a Ferrite Number (FN) formula to arrive at the estimate.

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The F-35 Makes its Inaugural Flight in Britain

Posted by Jeff Kirchner on May 9, 2012 9:44:00 AM
It was a brief 45 minute flight. No sonic speed records were broken; no oceans or English Channels were crossed; no flag-waving crowds were expectantly assembled. Yet it was surely one of the most historic moments to date in the history of the Royal Air Force: the inaugural test flight of Britain’s new F-35B Lightning II. The $259 million vertical takeoff and landing stealth fighter is England’s first so-called “5th generation” combat aircraft, making the U.K. the only other country in NATO (besides America) to have stealth capabilities for its air force as of yet.
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Topics: F-35, High Performance Alloys, NITRONIC 60

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