Nitre bluing salts

Nitre bluing salts. Material name: NitreBlue (TM) Bluing Salts, 10 lbs. here's the results of blue and beyond for the three steels - the candy cane effect comes out much better. Nitre Blue. The classic color is "peacock blue. Posts: 44. 00. Proven in small shops for over 50 years and used by top firearms manufacturers. Jul 21, 2010 · Yes, the Brownell's product you want is called "Nitre Blue". http://www. You can use a Coleman propane gas burner to heat and melt the salts which will began melting at about 600 degrees F. (4. All for just a few dollars more than those "bare bones" kits. $ 66. After degreasing, it moves to a hot rinse tank which generally is distilled water. Member. Fire bluing adds the finishing touches The Process. May 9, 2023 · Try niter bluing. Tyler Gun Works produces some of the best custom finish work in the United States. Put ingredients on a large, flat pan. Browse stories related to nitre bluing on the Turnbull Restoration blog. 2. You need a professional set up and very powerful ventilation, as well as several very large tanks and a controllable heat source. Avoid contact with eyes and skin. controls all of you find most useful for your low temp salts. Gorgeous "Fire Blue" Colors & No-Scale Tempering – A Master Metal Finisher’s Secret Useable In Any Shop. The colors usually range from a straw yellow, to dark purples or robins egg blues. I also have to wonder what happens if a fuel were introduced to the melt. ago. 250g Bluing Salts. Clean the back of your stock, in this case, the panel, and apply blue tape. and some more experimenting with longer soaks this afternoon, in the 10-30 minute range, still with the salts around 615F. Sodium Nitrate was the commonly used 'salt' for the process. All you need is a stove. NO Additives - NO Iodine - NO Anticaking - NO Microplastics. pails supplied. 21/Ounce) FREE delivery Sat, Mar 16 on $35 of items shipped by Amazon. edu Fire bluing or Nitre bluing is a traditional finish that gunsmiths and major firearms manufactures, used during the later part of the nineteenth century, and is an visually pleasing side effect of the heat treating process. Bake salts in oven at 200°F for 15 minutes, stirring every 5 minutes. I have used melted potassium nitrate to blue steel. Some of it depends on what the steel alloy is, so some experimentation is also needed. Mar 2, 2017 · Laredo, Texas. Feb 27, 2022 · After initial preparations, hot salt bluing usually is a five or six-step process. $84. This liquid keeps the temperature of the hands even so that filigree hands blue evenly. Color Case Stainless POR. In the nitre bluing process, polished and cleaned steel parts are immersed in a bath of molten salts—typically potassium nitrate and sodium nitrate (sometimes with 9. Once the stuff comes to the right temp, dip the parts in until the desired color is attained. [I use a steel deep fry thermometer. SaveShare. #6 · Feb 7, 2017. OXYNATE™ NO. Heat bluing is also tempering, and 700-800F is too hot for most parts. And consists of the following basic steps: 1 - Clean the properly polished gun and parts in Dicro-Clean 909™. As an added bonus, the salts can be used for the drawing operation when heat-treating springs and parts. The brilliant blue finish can be used on any type of metal using the convenienct aerosol can. Store in a glass, airtight container. The salts (potassium nitrate) are heated to about 700 degrees F and the parts submerged in it. I nitre blue with straight potassium nitrate from Lowes and it melts around 400 or so (I forgot) and starts off with a straw color, but as you get up to 700 the parts turn a deep navy blue. Heat up to the desired temperature and dip the polished and de-greased parts in it. Remove the parts and proceed as directed with the parts. 7 hot salts bluing is the type most commonly used by firearms manufacturers and offered Jun 15, 2022 · One of these is Nitre bluing. Niter or nitre is the mineral form of potassium nitrate, KNO 3. 250 gms Jar. One that I wanted to get a handle on is nitre bluing. The mixture is heated to 310 to 321 °C (590 to 610 °F) and the parts are May 15, 2020 · Nitre bluing is a process for producing a colored patina on metal parts. Colt used bones to a heavy degree, that were completely dried. There are also hot bluing solutions that require use of a blowtorch or other heating device to process the bluing. I found that a consistent 650 degrees worked best. Apr 7, 2016 · As for tempering gun steel: Hot salts aren't hot enough to temper gun metal. These parts are generally polished to a mirror like sheen to greatly enhance the beauty. Nitre bluing is a common way of bluing small steel parts such as screws and pins. You need to melt the salts and slowly bring them and the barrel up to 600 degrees and hold until you get the color you want. Oct 7, 2007 · The NitreBlue salts will melt. Seems to me that the bulk of the steel that goes into mosaic damascus blades is 1085/95 and 15N20 also known as L6. However, for a better blue on knife hardware, set up a niter bluing po It is nitrate salts that melt around 450F. You need to get into the 700 to 750F range for that bright Spring Temper Blue color. It is a soft, white, highly soluble mineral found primarily in arid climates or cave deposits. Supplied in a jar. Nitre bluing produces a peacock or electric blue color and is a nice contrast against a high polished black bluing job This is what I am talking about Oct 15, 2015 · 65. Place polished pistol into the heated Nitre bluing salts. SPECS: 10 lb. Lower temperatures give a "straw" color like the older Luger parts. Apr 20, 2021. cominstagram: @357. Description. It looks like you are utilizing a different salting method, as the Brownells salts become molten at 275F (135C) - but pure potassium nitrate seems not to become molten until 334C. Hightemptools sells the salts an well as places like Brownell's. Do all the prep you would for express or rust blueing, especially degreasing. “Nitre Bluing” is a highly decorative process in which parts are dipped in a solution heated to 600 degrees. This particular early 1892 I restored by hand polishing to 600 grit followed by 0000 wool and semi chrome polish which mimics the leather backed wheel sheen but doesn't do any harm to hand polishing. 7 Our Oxynate No. 4 grams (0. Salts heating up. 11-28-2012, 11:15 AM #6. In today's Triple-T (tools, tips and talk) #82, I'll be demonstrating how to do both hot bluing and hot blackening with hot salts! (links below)NitreBlue: Jan 13, 2012 · Precision32. Bath operates at 285 to 295 degree F. There is no chemical reaction. Hot Bluing is also known as Caustic or Hot Salt bluing, and can be very dangerous. Not transferrable to Feb 22, 2014 · Do this and if the salts get hotter than around 330 degrees the high temperature will destroy the salts. Feb 18, 2019 · Nitre bluing is limited to small, non critical parts, heat bluing or tempering of springs. Typically referred to as fire, heat, or temper bluing, this provides a unique blue color. The Bluing Procedure is Simplicity itself . It is not identical to "Mar-Quench B" from HeatBath, but it is very very near the same. It makes a bright royal blue on mild steel. The salts play a factor in the coloration too, but it is mostly a heat reaction. highveldt said: Real Nitre Bluing (liquid Potassium Nitrate bath at 800 -900+ degrees F 20-30 minutes) tolerates use much better than the so called "niter bluing" salts (not real) sold by Brownells and used by a large number of gun finishers--because it is easy, not the best way. The most controlled method I found was to buy a lead melting pot, hi-temp thermometer, and nitre bluing salts. Fumes from the oil and charred Dec 4, 2023 · Spring covers and extractors were heat treated polished and tempered using Nitre bluing salts to bring the parts to peacock blue . 23 shipping. May 11, 2016 · Brownell's has a neutralizing process that's more intensive than the bluing its self! If any of you guys remember an outfit called Numrich Arms, they had to dissolve the company on paper and open it by a new name The Gun Parts store because they polluted about 7 homes water wells with dead bluing salts that were located near the store. It is an ionic salt of potassium ions K + and nitrate ions NO 3−, and is therefore an alkali metal nitrate. 6kg) in plastic, resealable plastic pail. Heat up the crystals, which will melt Sep 6, 2009 · Nitre bluing salts can be purchased from Brownells. I use a Lee Pro casting furnace. Personally the hot caustic bluing is my preference as a deep blue / black on well polished steel is my fave. One recommended chemical method is to brush or sponge over the previously polished surface of the steel with a solution consisting of 2 parts of crystallised chloride of iron, 2 parts solid chloride of antimony, and Feb 1, 2012 · The Colt "Royal Blue" ultra polish finish was first used on the Colt Python in 1955, and for many years the Royal Blue finish was known inside the Colt factory as "the Python finish". Slide Only. Bluing Salts. Nitre bluing Niter and colour case. Plus, we include our step-by-step Bluing Apr 2, 2023 · DIY Rust Bluing Recipe:4 TBSP Peroxide1TBSP White Vinegar3/4 TSP Non-iodized SaltBoil in Distilled Wateremail: 357mdad@gmail. In this way, you can get small parts straw, white, gold, purple, and most commonly royal blue by nitre bluing at a specific temperature. Two of the different colors you can get. Turn parts and small pieces a deep, rich, lustrous blue with a finish that’s tougher and prettier than most of the cold blues. 477 posts · Joined 2010. Due to the high temperature used in Nitre Bluing parts that are subject to high pressure such as the barrel, bolt and receiver Mar 6, 2022 · Nitre Bluing sometimes referred to as strawing or hot bluing, is more akin to heat treating (like color case hardening) than bluing. OXYNATE NO. 1440 Version #: 01 Issue date: 11-07-2017 SDS US. Middle of the road blue is pretty cool. EVERYTHING! All the basics - Tanks, Stands, Burners, Cleaners, Salts and Oil that the "other guys" sell - PLUS everything else you need to start bluing guns. Historically, the term niter was not well differentiated from natron, both of which have been very vaguely defined but generally refer to compounds of sodium or potassium joined with carbonate or nitrate ions. Immerse item whilst lifting out occasionally to allow oxidation to take place. $6. #3. Cold blueing solutions usually just don’t wear well. magdadMusic: May 3, 2009 · It's called a "bluing salt" but it is not like the cold blues you have been using. Birchwood Casey Perma Blue Liquid Blue Gun Bluing Kit. Aside from the salts (082-090-019WB), a casting thermometer or heat treating thermometer (084-069-225WB ) can be used to monitor the salt's temp. Supplied in crystal form, which is heated to make a liquid. That would pretty much destroy the myth that nitre bluing and flame bluing can't be used for entire firearms because it would weaken them. ” The caustic salt mixture must be warmed in a metal basket to a temperature from 275 to 310 degrees F, relying on the composition of the traditional caustic black. Description: Nitre Bluing set for pistols. 3. Add cold water to the Bluing Tank and Dulite`s Steel Kote at the rate of 7lbs per gallon of water. 2 LB (1 KG) Box. Plan ahead and allow 20-30 minutes to boil. It was used as a tempering process to draw back parts that had been case hardened, and it was used as a final finish on parts that would not see pressure. " But nitre bluing is capable of producing yell Nov 29, 2012 · Just boil in distilled or rain water after rusting for a few hours (Summer humidity), and it turns nicely blue/black. not your usual tempering spectrum obviously ranging from almost purple at the end, through Jun 6, 2023 · I often blue screw heads by this method - polish the head with #220 wet-dry paper, degrease with acetone, and then apply Birchwood Casey paste blue with a que tip. Jun 22, 2014 · Nitre Bluing is not the same as Hot Salts Bluing (although heat and salts are used). Brownells Nitreblue~ Bluing Salts. For many years it was often difficult to have a gun blued and have it match the exact shade it may have been before and nearly impossible to bring a firearm to a gunsmith and have the blue match what may have been Sep 26, 2014 · Niter Bluing is mostly a heating technique to achieve different color to the steel. Keep water well away from it. jb0356 • 7 yr. Does nitre bluing alter the Rc of the blade and makeke for a blade that is not sufficiently hard to make a good working tool. Free in-store pickup at Blue Ash, OH. SOLD - $245. 390F Do not get Oxynate salt. It occurs in nature as a mineral, niter (or nitre in the UK). Feb 3, 2020 · Combat Weapon System. For quantity work (one to a dozen guns a week or month) the cost per gun is extremely low. Seriously, be freakin' careful. Feb 5, 2015 · The first one is a warm bluing (boiling) method that uses lye (caustic soda) and either sodium, potassium or ammonium nitrate (fertilizer) in a 2:1 ratio. plus a separate HazMat surcharge (God know what that costs). Nitre Bluing creates an array of colors from deep blues and purples to a pale yellow. It Works Great! Apr 28, 2023 · 353. Winchester used to add a small amount of Manganese Dioxide to it. Most Like-Sized Receivers. May 10, 2020 · The function of the charcoal is pretty much the same as the liquid nitre salts, to provide a way of controlling the temperature and making it uniform around the firearm. Use super glue ( cyanoacrylate) between the layers of tape to stick the part to the table. You can improve your results by doing two things: 1. This produces a blue much like what we see on Colt screws. Jun 21, 2017 · I nitre blue small screws, triggers and so forth in a small stainless steel container that you can buy in the pet food area at Walmart or a pet store. One drop of water and you are wearing 650* molten liquid. I am going to go with Brownell's NitreBlue but am wondering what sorts and sizes of containers and burners/temp. Set the rinse tank off to the side away from the heat but close enough to work easily from. Mar 3, 2017. There are two principal methods of obtaining a blue finish on steel parts, namely, (1) the chemical, and (2) the heating methods. Here's some pics of my first attempt at Nitre bluing. (they are NOT dissolved in water, they're used straight). 600F is more around blue, and an appropriate temper for lots of parts. Bulldogger. Feb 22, 2016 · Express blueing, slow rust blueing, hot salt blueing, nitre blueing, carbona blueing – all are better than cold blueing. The same NitreBlue Bluing Salts can be used to draw the temper on steel parts that have been hard-ened, such as knife blades and tools. Whether we are working for you, the end user, or a major manufacturer, we strive for 100% satisfaction. EDL Discussion starter. • NEVER add any chemical or additives to NitreBlue Bluing Salts or molten NitreBlue Bluing Bath. Some do not. Oct 31, 2013 · Today we are going to teach you how to Nitre blue without Nitre salts. The bluing process has changed a lot over the years both in the preferred methods and the chemicals used. In this case, you take a mixture of potassium nitrate salt and sodium hydroxide salt and melt them (700 °F (371 °C). Sep 1, 2013 · Essentially, the nitre bluing salts acts as a substrate for the metal parts to be controlled in a more precise temperature to achieve the desired "charring" of the metal, which gives it that nitre blue look. let sit, and wipe off. Brownells sells chemicals specifically for bluing stainless, I doubt yours will. #6. Instructions are here. Colt used the same mixture of ground charcoal and charred animal bone in the bluing furnace except the small parts were put in cast iron pots for the bluing process. Dip the parts in, watch for the color change. The "cold" bluing process is more common among gun owners who can easily return their barrel's blue finish without the need Jun 2, 2015 · I used the nitre bluing salts and a Lee casting pot to do the firing bluing of the small parts on these guns. when you get the color you want, quench it. They just provide a liquid that can be brought up to temperatures of 900 degrese before breaking down. (245 cubic cm). It is a process that is often used to temper springs or heat treat small parts without Single Shot Receiver. Colors range from a yellowish golden color to blue and finally to a beautiful blue black finish depending on how long the pistol is left in the salts. Place crystals in a strong container that will stand frequent heating to high temperatures. Aug 12, 2011 · For this and other MidwayUSA videos visit the MidwayUSA Video Library: https://www. ] Takes 15 to 45 min. Apr 18, 2015 · Nitre Bluing Jump to Latest Follow 762 views 5 replies 5 participants last post by reconciler Apr 19, 2015 Potassium nitrate is a chemical compound with a sharp, salty, bitter taste and the chemical formula K N O. May 27, 2004. Sponsored. #7. Mar 9, 2021 · Mount a semi-sacrificial block on the table, and face it off level, then clean it with isopropyl, and apply blue tape. Turn parts and small pieces a deep, rich, lustrous blue with a finish that's tougher and prettier than most of the cold blues. Solvents, tank covers, personal safety gear, extra additives and lots more. Put the parts in for a few seconds to a minute and they come out beautiful blue. The process is really quite simple: Heat the salts up to 570° F. Oct 3, 2016 · Heat bluing works fine. Make sure the one you buy will reach the bottom of your pot. The "hot" process uses nitre bluing salts and requires liquid heated to 650 degrees to activate the salts. 7 is manufactured by one of the country’s chief producers of manufacturer’s chemicals and sold by us to the gun trade by exclusive Brownells provides four basic types of bluing; Oxy-nate™ No. The other is nitre bluing which actually can impart a range of hues to metal from straw to black. Most double shotguns represented here. View 360° Image. It is for caustic gun bluing (hot black oxide), and is not at all the same thing. I use lead or a small pan of brass chips and a propane torch. 1 lb. We use melted salts to get to the right temperatures. (2) 40 lb. Card with a super fine wire wheel (like you can put your finger in it when running at 1750 rpm), repeat 4-6 times, done. I also use a propane deep fryer kit. Like. 2 - Rinse and scrub in cold, clean water. [ 1] Item. Remove from oven and allow to cool to room temperature. Initial investment around $120 and you can do all kinds of small parts or basically anything that will fit in the pot. If you were charcoal or nitre blueing, then you might be losing some of the quench in the steel (these blueing methods are done at about 600F), but not with hot salt blueing. One 6oz Trustrip Cleaner/Degreaser. For eyes: Flush with water for 15 minutes. midwayusa. The part will achieve a nice bluing when dipped into the solution for. 33 oz) of manganese dioxide per pound of total nitrate). Oct 9, 2014 · The bluing of metal is an oxidation process. Mix all ingredients together well. Oven bluing is basically the same, but with the surrounding air you don't get as good a color. 250g. (247) $22. DICRO-CLEAN 909 ™ - Use in a heated soak tank to remove the dirt and grime from gun steel that can ruin a bluing job. I just polished the parts to a mirror finish with Flitz on a Dremel polishing wheel, degreased with breakclean and submerged the parts in the solution for about 5 minutes. Oct 22, 2015. There is also Parkerizing which gives the best protection of traditional metal finishes and is often recommended under many spray on finishes. 171 posts · Joined 2011. In this GunTec presentation Larry Potterfield, Founder and C Mar 26, 2012 · Nitre bluing the small parts is best done by stripping them from the action and bluing separately - actually most bluing/blacking is best done by stripping to component parts. Also known as Fire Blue, Nitre Bluing was historically seen on small parts of handguns and long guns. #2 · Jan 14, 2012. 7 hot salts bluing is the type most commonly used by firearms manufacturers and offered Apr 20, 2021 · 2,054. Bluing is primarily cosmetic with some forms of bluing (or parkerizing) providing a level of man doing the bluing, and an asset no other bluing supplier can claim, or provide, for their hot bluing salts. Nitre bluing will not hurt the barrel. When melted it's basically a thick liquid that will not boil and will go to a very high temperature. That blue you're looking for should occur about 600-650 degrees. Clean your tanks with Dulite #31 cleaner. Dec 01, 2021 · Herbal bath salts recipe directions. Join Date: June 27, 2018. Heat up crystals which will melt and form a liquid. Location: Mount Sterling Kentucky. See PDF for full instructions. $90. You can get a lot of different colors from niter bluing, not just blue. SDI. The bluing solution applied in hot bluing is a caustic salt mixture of potassium nitrate and sodium hydroxide recognized as “traditional caustic black. Or fastest delivery Fri, Mar 15. Hot Caustic Salt Blue. Nitre bluing is more closely related to heat treating or heat bluing. DuraBlue Nitre Aerosol Kit Contains: One DuraBlue Nitre Aerosol Can. Those of you that have followed my posts on this forum or on my blog are aware that I have been experimenting with different types of bluing. Used for bluing steel clock hands. It also scares the c&^p out of me. I can always order those salts, I suppose, but seems like so many others have had success with just potassium nitrate. You could achieve this by just waving a piece above a propane torch, but that isn't very precise and is done by eyeballing. Rinse. Oxynate No. $749($0. 7 has, for more than 55 years, been the popular bluing salts for the professional gun trade. Translucent white color. Nitre Bluing (photos) These are some recent 1911 parts I Nitre Blued at the shop. Apply a couple of times. Getting moisture of of everything was noted as critical. NITREBLUE~ BLUING SALTS (No Reviews) SKU: Model: UPC: 050806107342. Jun 10, 2014 · Brownells sells the Nitre bluing salts and you can use a lead casting pot to heat them to the melting point. Chemicals and cast iron tank. Consult physician immediately. In practise it’s a little trickier to use and most people find the results uneven; the chemical seems to bond to different Jul 31, 2010 · Some salts mix with water. The salts will blue in a temperature window- stay in the 253-280 degree area, using ladled cold water to drop the temp back down, don’t add water to parts in the boil. Depending on the temperature of the salt bath. Some of the methods of include “Hot Caustic Salt”, ” Slow Rust”, “Express Rust” and Nitre bluing. At least, that’s the theory. E. Cold Bluing is a relatively straightforward process: you buy the bluing compound (typically selenium dioxide) paint it on, rinse it off, and you’re done. Brownells provides four basic types of bluing; Oxy-nate™ No. Danger: Oxidizer - Contains Sodium Nitrite, Sodium Nitrate and Potassium Nitrate. Color Case 1911. Get The Sought-After Look of Nitre Bluing. [5] Aug 17, 2011 · Flame bluing is a process that dates back to early British gun-making and is still in use today. Dec 13, 2018 · How to Blue a Gun: Cold Bluing. Nitre blue salts consist of sodium nitrate, sodium nitrite and potassium nitrate. It can be achieved in several ways. com/video-library Feb 5, 2017 · 13911 posts · Joined 2013. The only thing Nitre bluing salts do is enable you to hold a steady temperature and to be able to heat the whole piece uniformly. This coloring is done by heating the metal up until it tempers to the right hue. Medium size salt particles -aka- "Kosher Salt" or "Rock Pretzel Salt" Great for pretzel topping & meat etc. May 15, 2016 · Niter (Nitre) bluing is nothing more than temper bluing in a controlled and air free environment. Cold blueing is OK for touchups, at best. Work that blue into the screw slot with a tooth pick. Additional information. Royal Blue didn't refer so much to the color as to the brilliant polish, the finest polish ever done on a semi-production pistol. 25 sold. or Best Offer. box supplied. To achieve 58/60 Rc the tempering temperatures of 1085/95 are in the 570 -600 Deg F Nitre salts are designed to completely change the temperature of a small part, in order to heat treat it, and leave behind the residual coloring associated with heat treating at that temperature. Most folks know it for the peacock blues found on Colt's, Winchesters A short video showing the process of using nitre bluing salts to color small steel gun parts. Niter bluing is the hottest form of bluing. 99. Lower temperatures give a "straw Nov 21, 2003 · Then it came to me, low temp salts would be cheaper than buying a second oven, and be useful not only for tempering but also for marquenching, martempering, and heat coloring. Yes, it uses molten salts in its processes but the finish change is more of a by-product when it is used for heat treatment. 95. If you don't have a thermometer, heat until a sample part will just sizzle cold water. --- The NitreBlue salts cost 10lbs=$40 and 20lbs=$62. Frame Only. May 27, 2004 · 3. depending on the steel and how dense a film you want. The process is simple, and what you are getting is essentially a temper color. HoroSolv. Feb 10, 2024 · Nitre bluing Niter and colour case. Jun 13, 2011 · Nitre blue is just a method of bluing using heat. Oxpho Blue Professional Grade Cold Gun Blue CREME. For skin: Wash with soap and water. Provides a deep, blue-black color on most gun steels (except stainless). (1) 24 lb. #1. These pots were put in another coal fired furnace and heated until the desired color was reached. 7, hot salts bluing; Dicropan IM™, a hot wa-ter blue; Nitre Blue™ Bluing, a heat blue; Dicropan T4™, Oxpho-Blue™ and 44/40® cold blues. Set up your stand and place the Bluing Tank, next to the Soap Tank. That's interesting but sodium hydroxide is what is used in hot blue. May 13, 2016 · 05-14-2016, 11:40 AM. Frame and Slide. The parts are suspending in a salt solution that contains Potassium Nitrate, Sodium Nitrate and other chemicals (Brownell's recipe also contains Sodium Nitrite, other recipes include Manganese Dioxide) that is heated to 600 degrees. May 28, 2016 · May 28, 2016. One of these is Nitre bluing. of salts will take up approximately 15 cubic in. Fire fighting equipment/instructions Aug 7, 2019 · What are gun bluing salts? The nitre bluing process (sometimes referred to as fire bluing, peacock bluing or niter bluing) is a gun metal finishing process involving a salt bath solution of sodium and potassium nitrates, heated to exact temperatures. First, your workpiece is placed into a hot degreasing tank to ensure that any particulates or oils that you may have missed are washed away. Surface finish is everything in heat bluing. Double gun shotguns - Side by Side shotguns, and over under shotguns - Including drillings, double barreled rifles, SxS double rifles, combination guns. Jan 7, 2009 · Just the bluing salts alone will set a person back about fifty bucks, not to mention the specialty tanks to use the solutions! However, niter-bluing uses nothing except potassium nitrate for its active ingredient, and potassium nitrate in a suitably pure form is as far away as the local hardware store, nursery supply shop or home improvement mart! Apr 9, 2022 · No, have only done this type of heat bluing with nitre salts. It uses boiling lye solutions. A hot blue salt bath is about 285F to 292F - the lower temps are for higher altitudes. The melting point is slightly higher, with liquidus at aprox. - 650° F. The salts do not cause the color change. The salt can be controlled to within 5 degrees witch is near impossible to do with open flame. As with other 19th Century technology, it is fairly easy to do for the advanced tinkerer. NitreBlue Bluing is a controlled heating process that will color virtually all carbon and tool steels. . These are some tests with 52100, 5160, O-2, O-1, L-6, W-2 SA202-E and Nickel using NitreBlue bluing salts from about 540 degrees to 565 degrees. ob wa xv bc zw do ne ka wf io