Nimonium

These guys might know: http://bangalore.indiabizclub.com/profile/1609956~vasantha+lakshmi+engineering+works~bangalore_india

(Possibly a trade name or local name for some more commonly known material?)

Is it possible you are inquiring about Niobium???

No this is Nickel - chrome Iron, Nickel-chrome and nickel-chrome-molybedinum alloys.

Most popular are Nickel Chrome type and is nothing to do with Niobium

Dollars to donuts this is the best answer. Niobium is the IUPAC name for what us Americans used to call columbium, It is used as a deoxidizer in steel making, In nuclear reactors and superconducting materials.

http://srf2003.desy.de/talks/Myneni/SRF%202003_my.pdf

Milo

"Dollars to donuts" by Jove, I think he's got it! Check out the Austrian silver-niobium coins. They are a silver washer with a niobium central disc-donut shaped. You would need to convert 25 Euros to Dollars to make a direct comparison, but I have a computer program to do that. Looks like the niobium guys win, unless OP wants to weigh in with additional data.

It's the next element over on the periodic table from Unobtanium.

... could it be an ammonium? compound?

Nimonium appears to be musical material. Ask or look for technical sheet here.

I think this could also be what he's looking for.. they use this material for gas turbine components (hot sections)...or maybe not. Would be nice if you explained your interest in the material or the application you wish to use it on so you could get the correct information.

Good Luck!

nimonic 80a (tm) super alloys [nicrofer 7520 ti (tm),udimet 80a (tm)] material property data sheet Search:
	Metal Suppliers Online: Material Property Data Super Alloy Nimonic 80A (tm) Specifications Related Tradenames and Metal Names Chemistry Data Welding, Machining/ General Data Physical Data Mechanical Data Links to Related Data Specifications The following specifications cover Super Alloy Nimonic 80A (tm) Property Results Related Metals: Nicrofer 7520 Ti (tm) Udimet 80A (tm) Chemistry Data : [top] Aluminum 1 - 1.8 Boron 0.008 max Carbon 0.1 max Chromium 18 - 21 Cobalt 0.2 max Copper 0.2 max Iron 3 max Manganese 1 max Nickel Balance Phosphorus 0.045 max Silicon 1 max Sulphur 0.015 max Titanium 1.8 - 2.7 Principal Design Features A nickel-chromium alloy strengthened by additions of titanium and aluminum. The alloy is used for high temperature, high strength applications. Applications Gas turbine hot section components. Machinability Conventional machining techniques used for iron based alloys may be used. This alloy does work-harden during machining and has higher strength and "gumminess" not typical of steels. Heavy duty machining equipment and tooling should be used to minimize chatter or work-hardening of the alloy ahead of the cutting. Most any commercial coolant may be used in the machining operations. Water-base coolants are preferred for high speed operations such as turning, grinding, or milling. Heavy lubricants work best for drilling, tapping, broaching or boring. Turning: Carbide tools are recommended for turning with a continuous cut. High-speed steel tooling should be used for interrupted cuts and for smooth finishing to close tolerance. Tools should have a positive rake angle. Cutting speeds and feeds are in the following ranges: For High-Speed Steel Tools For Carbide Tooling Depth Surface Feed Depth Surface Feed of cut speed in inches of cut speed in inches inches feet/min. per rev. inches feet/min. per rev. 0.250" 25-35 0.030 0.250" 150-200 0.020 0.050" 50-60 0.010 0.050" 325-375 0.008 Drilling: Steady feed rates must be used to avoid work hardening due to dwelling of the drill on the metal. Rigid set-ups are essential with as short a stub drill as feasible. Heavy-duty, high-speed steel drills with a heavy web are recommended. Feeds vary from 0.0007 inch per rev. for holes of less than 1/16" diameter, 0.003 inch per rev. for 1/4" dia., to 0.010 inch per rev. for holes of 7/8"diameter. Milling: To obtain good accuracy and a smooth finish it is essential to have rigid machines and fixtures and sharp cutting tools. High-speed steel cutters such as M-2 or M-10 work best with cutting speeds of 30-40 feet per minute and feed of 0.004"-0.006" per cutting tooth. Grinding: The alloy should be wet ground and aluminum oxide wheels or belts are preferred. Forming This alloy has good ductility and may be readily formed by all conventional methods. Because the alloy is stronger than regular steel it requires more powerful equipment to accomplish forming. Heavy-duty lubricants should be used during cold forming. It is essential to thoroughly clean the part of all traces of lubricant after forming as embrittlement of the alloy may occur at high temperatures if lubricant is left on. Welding The commonly used welding methods work well with this alloy. Matching alloy filler metal should be used. If matching alloy is not available then the nearest alloy richer in the essential chemistry (Ni, Co, Cr, Mo) should be used. All weld beads should be slightly convex. It is not necessary to use preheating. Surfaces to be welded must be clean and free from oil, paint or crayon marking. The cleaned area should extend at least 2" beyond either side of a welded joint. Gas-Tungsten Arc Welding: DC straight polarity (electrode negative) is recommended. Keep as short an arc length as possible and use care to keep the hot end of filler metal always within the protective atmosphere. Shielded Metal-Arc Welding: Electrodes should be kept in dry storage and if moisture has been picked up the electrodes should be baked at 600 F for one hour to insure dryness. Current settings vary from 60 amps for thin material (0.062" thick) up to 140 amps for material of 1/2" and thicker. It is best to weave the electrode slightly as this alloy weld metal does not tend to spread. Cleaning of slag is done with a wire brush (hand or powered). Complete removal of all slag is very important before successive weld passes and also after final welding. Gas Metal-Arc Welding: Reverse-polarity DC should be used and best results are obtained with the welding gun at 90 degrees to the joint. For Short-Circuiting-Transfer GMAW a typical voltage is 20- 23 with a current of 110-130 amps and a wire feed of 250-275 inches per minute. For Spray-Transfer GMAW voltage of 26 to 33 and current in the range of 175-300 amps with wire feed rate of 200-350 inches per minute are typical. Submerged-Arc Welding: Matching filler metal, the same as for GMAW, should be used. DC current with either reverse or straight polarity may be used. Convex weld beads are preferred. Heat Treatment Solution anneal at 1975 F for 8 hours and air cool. The hold at 1300 F for 16 hours to precipitation harden and air cool. Forging Forging may be done in the temperature range of 2150 F to 1800 F. Hot Working Hot working may be done in the temperature range of 2150 F to 1800 F. Avoid hot working at temperatures of 1000 F to 1800 F. Cold Working Cold forming may be done using standard tooling although plain carbon tool steels are not recommended for forming as they tend to produce galling. Soft die materials (bronze, zinc alloys, etc.) minimize galling and produce good finishes, but die life is somewhat short. For long production runs the alloy tool steels ( D-2, D-3) and high-speed steels (T-1, M-2, M-10) give good results especially if hard chromium plated to reduce galling. Tooling should be such as to allow for liberal clearances and radii. Heavy duty lubricants should be used to minimize galling in all forming operations. Bending of sheet or plate through 180 degrees is generally limited to a bend radius of 1 T for material up to 1/8" thick and 2 T for material thicker than 1/8".

This is a classic case of an insufficient question requiring inferences to understand, resulting in confusion and differences in OPINION.

We are of course familiar with the Nimonic alloys. What we don't get is how one gets from "nimonic" to "nimonium."

Even non native speakers are unlikely to confuse a long vowel o from a short vowel o sound, or an "ic" sound with "ium."

If we presume that the vowel sounds don't shift, and the "ium" ending remains the same, then it is much easier (occams razor) to see how the "b" of niobium could be mistaken for the second 'n' in Nimonium. The first 'm' is a soft sound, and likely an insertion resulting from OP's Original tongue.

My 2 sense.

Milo

Hence my flippant remark. I truly get tired of trying to read minds. More often than not the OP never comes back and clarifies what he or she really means anyway.

thank everybody for information

So can you help us figure out which were you interested in?

Milo

Hi Milo

I thing , I was looking for 80A. Me and my friend are angeged in engine tune and he find nimonium info that is perfect valve material. All factories use different marks for their products therefore I wanted to know all possibilities and to be sure we make valves from right material.

Thank everybody again

Thanks. CNCNucking You called it. Milo

Thank you Milo... I knew it had to be one of the two. It was a coin toss given the missing application information. That's what you call a crossword puzzle post!

Thanks for the clarification. Niobium would not be a good material choice to make valves from.

welderman, I'm not familiar with the mechanical properties of pure niobium, but I know it is used as a surface treatment and alloying element for alloys that must withstand high temperature oxidizing environments (jet engine hot section parts, rocket nozzle bells, etc. so it might not be such a bad choice either.....

I looked at the properties at the reference Milo gave us and noticed that niobium has a low elastic modulus, low elastic limit and yield strength, and a plastic range so wide that fracture was never achieved. This is likely why Austria makes coins out of it, but these properties do not seem appropriate for a valve. Even high strength alloys sometimes fracture at the stem/valve junction. A yielding valve stem would not be helpful or tolerated.

Using any pure element as the base metal for a mechanical part is usually a bad idea, but as a surface treatment or alloying element niobium would be fairly ideal for an engine valve. Niobium has a affinity for chromium and can form Delta phase in the grain boundaries if the alloying chemistry and the thermal history is right. Depending on the application this might be a good or a bad thing. (but usually bad.)

The engine bells of rocketdyne rockets were plated with Niobium (aka Columbium at the time). And Niobium is an alloying element for a number of high temp nickel alloys used in Turbine Blades and other hot section parts. A trick I was told of by a Gas Turbine Metallurgist was a means of reconditioning turbine blades that had undergone high temp oxidation/carbourization was to essentially "pack carbourize" (for lack of a better term) the blade in a vacuum furnace, but not with carbon but with powdered niobium and allow the niobium to diffuse into the surface of the blade where it strips the oxygen and the carbon off the oxides and carbides. There was some grain growth, but not a lot.

"Columbium" is a term I've seen in welding literature. Explanations I have seen before equate it to vanadium. This is the first time I have seen niobium mentioned. I wonder if "columbium" was some kind of catch-all term.

I think CNC... has best captured the sense of the OP's question.

Hi Tornado.

Columbium was the original Name for element #41, which the Union of Pure and Applied Chemists later Named "Niobium." You can tell if someone is an engineer geologist or a chemist by what they call element # 41- Engineers and geologists tend to say Columbium, (columbite for the mineral) the Chemists- Niobium.

The original specimen in the British Mseum was an ore named 'columbite' from which Charles Hatchett chemically isolated the first oxide of this element. Hatchett named it columbium, a poetic name for "America" from which the British museum's sample of the mineral had been obtained.

Because Hatchett didn't isolate the pure metal, and because the mineral also contains Tantalum, It fell to another Chemist, Heinrich Rose to first isolate the pure metal. He named it Niobium in honor of Niobe, the Goddess of Grief.

It falls right below Vanadium on the Periodic Table in Group VB.

Because of its outer shell electron structure it reacts more aggressively than Iron and Manganese to scavenge oxygen, and so is used as a deoxidizer/ grain refiner in steel.

I discuss this in my blog post here: http://cr4.globalspec.com/blogentry/13358/Killed-Steel.

Also Here: http://pmpaspeakingofprecision.com/2010/05/05/the-difference-between-microalloy-and-regular-alloy-steels/

Other uses of Niobium include superconducting materials (Think magnets for Magnetic resonance imaging in labs and in health care ), Cathodic protection, alloyed with zirconium for corrosive alkaline alloy application, and in stainless steel applications.

Niobium is also used in surgical implants as it is not reactive with our tissues.

Milo