Go. Owning a stainless steel grill, it is important to be aware of some discoloration that can happen with heat exposure. What are the reasons for the discoloration of stainless steel screws, The main application of stainless steel hexagon screw. Offer Dropshipping Service: Offer Dropshipping Service. A chromium-rich scale is formed, which is typically not very protective, and the stainless steel surface becomes chromium-depleted: these effects may impair the corrosion resistance of stainless steel … It is just a matter of the argon shielding envelope leaving the hot metal before it has a chance to cool enough to not oxidize. As you can see in the control panel here, the stainless steel has been badly discolored from the heat. You Will Need: Club soda; Soft cloth; Elbow grease; Steps to Remove the Heat Stain: For any formulation of stainless steel alloy, there is always some combination of temperature, chemicals, mechanical force, and other stress factors that could compromise the appearance of the steel. Over the years, industrial concerns have discovered that BlueAway is perfect for removing heat-caused discoloration on stainless steel welds. Next Last. Copyright @ Lizhan Hardware Co., Ltd. All Rights Reserved. The three most important variables that determine stainless steel weld discoloration/oxidation are amperage, travel speed, and quality of shielding gas coverage. With more chromium and oxygen, the outer layer of steel becomes thicker and loses its transparency. This type of flatware resists rust and corrosion. The rainbow stain on stainless steel is what we call "heat tint." Heat stains on stainless steel can result from multiple reasons. 3. Heat treaters are tasked with developing the right balance. "We took some Phosphoric Acid (10% by volume) and used reverse current gotten from a few flashlight batteries wired together. In the process of stainless steel screw quenching, if the oil is too aging, it may also cause the screw to turn black. While most stainless steels are resistant to oxidation at low temperatures, the various metal in the steel formulation (iron, chromium, molybdenum, etc.) However, the real problem concerns the underlying chromium-depleted layer of the alloy which becomes susceptible to corrosion and rusting. However, stainless can become discolored. Under these conditions, the surface is passive, or resistant to corrosion. Heating the stainless steel to temperatures in excess 800 °F can cause metallurgical changes and reduce corrosion resistance in a manner that is not corrected by surface cleaning or chemical passivation. The color combination depends largely on the amount of heat used during welding – darker colors (brown, blue, and purple) are usually formed at higher temperatures (> 370 °C or 698 °F). Machine screws manufacturers Hangzhou Lizhan Hardware Co., Ltd. will come to talk to you about the reasons and solutions. Weld cleaning | The color of the "stain" is a function of the layer thickness. iPhone . The cleaning fluid still remains on the surface of the stainless steel screw, so after a period of use, the cleaning fluid will react with it. For instance, setting a hot pan on the stainless steel surface leaves a mark behind. Stainless Steel Brightener Designed to remove heat discoloration (yellowing) from stainless steel surfaces. Figure 2 | 13-8Mo precipitation hardening stainless steel medical part discolored by air in the backfill gas. What are heat tints and how are they created. Usually this is a discoloration that cannot be removed. Cleaning stainless steel pans with baking soda brings them back to the shine they had when you first purchased them. The characteristic color spectrum is just a visual manifestation of this process. Temperature Tolerances for Grade 316 Stainless Steel. Response from weldingtipsandtricks.com on stainless steel welds. May 27, 2017 500 1,024 Netherlands. ONLY use to remove heat discoloration. How to Clean Stainless Steel That Is Discolored From Heat Step 1. 2a 2b 2c 2d 2e 2f 12 ppm Oxygen level 60 - 70 ppm Oxygen level 70 - 90 ppm Oxygen level 200 ppm Oxygen unacceptable 250 ppm Oxygen unacceptable 500 ppm Oxygen unacceptable Tint Chart 24-05-2018 … If your amperage and travel speeds are within range of the stated upper limit with respect to the overall heat input, then you may want to take a closer look at your shielding gas quality and coverage. This covers the surface with an iron-free chromium oxide layer and gives it the shine that stainless steel is famous for. Stainless steel is a sturdy and reliable material commonly used in kitchen sinks, appliances and cookware. How to remove discoloration from heat? Q. I'm new to the whole method of heat treating but I've got a question that I hope some of you have the answers to. As the steel structure changes through melting, the free iron particles begin to accumulate on the surface where they react with oxygen and cause corrosion. Fill the pan with water to cover the burnt food marks (1-3 inches depending on the depth of the pan) Pour ~¼ cup of baking soda into the pan, mix well, and bring mixture to a boil. Blue Away is available in small bottles with 60 ml or money-saving 1000 ml bottles. During welding, the structure of the steel changes, and a chemical reaction (oxidation) occurs which separates the chromium from the metal base while also pushing it towards the outer layer. Surface discoloration and red rust after heat treatment of the phosphate film on the surface of the stainless steel screw. The surface discoloration on stainless steel after grinding or welding is surface oxidation. My plant machines small cones for a valve assembly out of 17-4 PH Condition A Stainless Steel. Despite its name, even stainless steel can get stains. I was wondering about the discoloration of Stainless steel TIG welds . NBAasDOGG macrumors 6502a. 2007. A discussion started in 2007 but continuing through 2019. Balance is achieved when heat treating and annealing stainless steel parts is precisely matched to their makeup and intended use. Most metals, including stainless steel, have an oxide layer at the surface. Heat treaters are tasked with developing the right balance. Several methods are commonly used to remove discoloration on stainless steel after welding – electrochemical cleaning, chemical pickling, and mechanical grinding & brushing are just few of them. Possibly an acid I could immerse the part in? Packing: 1pc/white/Color Box. Thus, we are dealing with a twofold problem. discoloration of stainless steel due to heat. When cooking with stainless steel, we recommend that you use lower heat to cook your food. When your stainless steel has heat damage, it is possible to get some discoloration. The surface discoloration on stainless steel after grinding or welding is surface oxidation. This is a very difficult material to heat treat without discoloration. While stainless steel is famous for its resistance to oxidation and discoloration in most “normal” use cases, it’s important to note that no alloy is 100% impervious under all situations. can form oxides at higher temperatures. iPhone. 4. Heat discoloration could happen on flatware if it falls in the heating unit in your dishwasher or if you leave the flatware in a pot while on heat or directly on a hot stove. Please do not burn your house down. After the stainless steel screw is quenched, the water quenching medium remaining in the stainless steel screw will easily cause the rust imitation performance of the stainless steel screw to decrease and the phenomenon of blackening after a period of time. All of them indicate a change in color on the top layer of stainless steel – around the weld bead and within the HAZ (heat-affected zone). We explained all the important health & safety reasons here. It's covered with a protective coating. Pressure and heat as integral parts of the welding process are directly responsible for the formation of rust on stainless steel surfaces. But sometimes it can happen to the outside of your grill. Logo Printing: Customer`s Logo. Sometimes i get a beautiful rainbow coloration of the welds and sometimes they are just gray and plain looking. As stated in an AK Steel data sheet for grade 316 stainless steel, the melting range of 316 SS is 2,500 ° F – 2,550 ° F (1,371 ° C – 1,399 ° C), roughly 50 to 100 degrees Fahrenheit lower than the melting point of grade 304 stainless. Don't use cooking sprays on stainless steel pots and pans, as this leads to discoloration. somewhere else on the web I saw a solution to bluing. What I am concerned about is a line that is welded to a thermal oxidizer which operates around 600 deg.C which is around 1112 deg. Slow down. Step 3. This discoloration is sometimes known as “bluing.” The discoloration of stainless steel is generally caused by the screw not being cleaned during the cleaning process after the screw is hardened. Oxidation of stainless steel indicates that the metal temperature at the oxidized surface was in excess of 1000 °F. Welding and the loss of passivity on stainless steel surfaces. Drinks such as coffee and tea can discolor it. is a specially formulated product originally introduced to remove the "blue-ing" or heat-caused discoloration caused from chrome exhaust pipes on motorcycles or custom cars. Another popular alloy of stainless steel, grade 316 SS is often used for applications that involve powerful corrosives, as its corrosion resistance generally exceeds that of grade 304 SS. The rainbow stain on stainless steel is what we call "heat tint." Discoloration is oxidation. Stainless steel parts are often heat treated to anneal (harden) the metal and relieve stress in the parts. Intense heat will leave an orange and brown coloration that is in the stainless. Prev. If you are experiencing a specific challenge related to discoloration and stainless steel weld cleaning, give us a call or reach us through e-mail – we are always happy to help! Usually this is a discoloration that cannot be removed. We all know that stainless steel screws are the origina […]. Pour club soda onto a terry cloth and scrub the discolored area. Balance is achieved when heat treating and annealing stainless steel parts is precisely matched to their makeup and intended use. This oxidation causes the discoloration often seen on steel after heat treatments. The easiest way to reduce HI is to increase travel speed, assuming you have a voltage and amperage value that is producing the desired welder-friendly arc characteristics. Stainless steel is susceptible; thus, if you are going to purchase any material, you must read the manufacturer’s manual carefully. At elevated temperature, the metal comprising the stainless steel will combine with oxygen to form an oxide layer on the metal surface. A chromium-rich scale is formed, which is typically not very protective, and the stainless steel surface becomes chromium-depleted: these effects may impair the corrosion resistance of stainless steel welds. … Color: As picture. However, chemical pickling should definitely be avoided due to the harmful effects of nitric and hydrofluoric acids. Barry Feinman from Restore It Yourself, Inc. demonstrates how to remove the discoloration and heat scorching from the hood of Stainless steel BBQ grills. While this technique may seem basic to some of you — cooking on high heat can burn food and give you less flexibility as you cook — stainless steel will discolor from constant high heat. The use of the pickling paste is widespread. This discoloration is sometimes known as “bluing.” In order to imitate the discoloration of the screw, we will remove the phosphate film before the heat treatment. Heat can discolor stainless steel flatware, but generally pots are more susceptible to this type of discoloration. As explained in one of the previous articles, stainless steel is ‘stainless’ due to its chromium-rich composition and a passive outer layer that helps it to successfully fight corrosion. Stainless steels are generally heat-treated based on the stainless steel type and reasons for carrying out the treatment. Propane and butane will work on thinner metals just fine. Though these marks appear as damage to the surface, they are simply a discoloration that can easily be removed. Keywords: Color-Changing Water Bottle. Chromium carbides form in stainless steels along either side of a weld. Oxidation of the root bead and adjacent HAZ during welding of stainless steels is commonly called heat-tint. Heat tint (temper) colours on stainless steel surfaces The colour formed when stainless steel is heated, either in a furnace application or in the heat affected zone of welds, is dependent on several factors that are related to the oxidation resistance of the steel. When your stainless steel has heat damage, it is possible to get some discoloration. You will most likely see this on the inside of the grill lid more than the outside since a grill is made for the heat. Ask Cougartron | Stainless steel contains a small amount of chromium in it to help resist corrosion and rusting. Post Weld Heat Treatment for Stainless Steel. The data of the water quenching medium can imitate the blackening of the surface of the stainless steel screw. Step 3. Owning a stainless steel grill, it is important to be aware of some discoloration that can happen with heat exposure. Gently scrub the burnt food. Thermal processes improve some qualities at the expense of others. 1; 2; 3; Next. Weld Discoloration This article will identify acceptable levels of weld discoloration on mechanically polished and electropolished stainless steel surfaces and also show proven shop and field remediation practices to removes excessive heat tint. Baking soda. We offer a variety of weld cleaning machines developed to successfully remove different types of weld tints and discoloration. Stainless steel contains a small amount of chromium in it to help resist corrosion and rusting. Basically, when stainless steel is heated to high temperatures, the oxidized layer can thicken, causing a rainbow tint. Barry Feinman from Restore It Yourself, Inc. demonstrates how to remove the discoloration and heat scorching from the hood of Stainless steel BBQ grills. 2. Types of stainless steel . Heat temper weld . it will not restore the corrosion resistance. Supply Ability. Surface discoloration and red rust after heat treatment of the phosphate film on the surface of the stainless steel screw. The reaction causes discoloration of the surface of the stainless steel screw. Once the steel has become embrittled with sigma it is possible to reclaim it by heating the steel to a temperature above the sigma formation temperature range, however, this is not always practical. Fortunately, there are a number of quick and easy ways to clean your stainless steel appliances. The reaction causes discoloration of the surface of the stainless steel screw. The mechanical treatment of heat tint by stainless steel brushing [6.2.3(d)] simply burnishes the surface and does not remove the low chromium layer beneath, i.e. I need to figure out how to remove the discoloration the heat from welding stainless steel produces. I'm using 20GA brushed or mirror finish so I need a solution that doesn't involve abrasives, etc. When it comes to low-powered systems, the process of removing the oxide scale can become more complicated. Let it cool for 30-45 minutes. Heat tinting causes this naturally occurring oxide layer to become thicker which causes discoloration. The fire in the mesh belt furnace area. A similar HI value on stainless steel that is 1/8 in. Mix the baking soda with a small amount of water to make a paste and clean with a damp cloth. However, the choice of method depends largely on the scope of the problem. This world famous chemical compound is known to remove heat-caused discoloration or “blue-ing” from chrome, stainless steel and precision metals which have been exposed to welding or other extremely high temperatures. Thread starter JCCL; Start date Jul 24, 2018; Sort by reaction score; Forums. Industrial terminology recognizes a variety of related terms signifying the same phenomenon – discoloration, oxide scale, and rainbow effect are just some of the popular examples. Additionally, we will show the effect of various oxygen levels and the impact heat tint has on corrosion Fold up a paper towel and place it atop the discolored area on the cooktop. Avoid scrubbing stainless steel with scouring pads or abrasive cleaners. Heat Tint Recognition Chart For Stainless Steel Welding Pictures 1a to 1 g provided by Norsok for the Norsok Standard M-601 Welding and Inspection of Piping (Edition 5 April 2008) (Annex B). Tel: +45 43 20 19 00, Introducing the New and Improved Cougartron Website, Cougartron Weld Cleaning Fluids – A Full Overview, Electrochemical marking and etching – easy and convenient way to mark/etch stainless steel and other types of metal surfaces. During the heat treatment process, we need to raise the problem appropriately. In the process of oil quenching, the temperature should generally be lowered, generally 50 degrees is more appropriate, so that the speed of oil aging can be guaranteed. Can you give me any advice on how to keep them getting the "rainbow" coloration? Applying the Chemical Solvent To The Lynx Gas Grill Control Panel. A paste of liquid soap and baking soda is probably your best bet. We all know that stainless steel screws are the original color, and in most cases there is no need for surface treatment, unless the customer requests it. I seems low heat is the key as more turns it gray, but with the lower heat i fear poor penetration.. Hi, folks I have Motad stainless steel exhaust header pipes to put onto my 4PT, and a stainless steel tailpipe in the post. In certain cases, the use of various methods is necessary but electrolytic cleaning in most situations is the most appropriate solution. What Are Heat Tints and Corrosion Heat Tints . Types of stainless steel. Wednesday, 18 April 2018. First Prev 2 of 3 Go to page. 0 Comments Like: 0 Like: 0 discoloration of stainless steel due to heat. Heat stains can occur on stainless steel appliances for a variety of reasons. It may leave a few scratches, but that won't affect the heat conductivity of the pan. Basically, when stainless steel is heated to high temperatures, the oxidized layer can thicken, causing a rainbow tint. May 4, 2019 #26 Black PVD coating on cheap watches use to shrink when exposed to … Capacity: 350--500ml. These carbides form where the metal is in the temperature range of approximately 1100 – 1500 F. Since the weld pool is well above this temperature and the base metal is below it, there is always some part of the welded part which was in that temperature range. The fire in the mesh belt furnace area. Sample time: 3--5 working days. 1. Surface discoloration and red rust after heat treatment of the phosphate film on the surface of the stainless steel screw. During the heat treatment process, we need to raise the problem appropriately. Step 2. Avoiding heat-discolouration on a stainless steel exhaust pipe: possible? That is why gas welding steel with an oxyfuel torch looks so gray all over. The electrochemical method is extremely effective in these cases since it successfully removes oxides from the surface and restores the anti-corrosive passive layer. However, the potency of the machine used is also a highly relevant factor to consider. But heat treating stainless steel can be tricky. Heat Treat Discoloration Stainless steel parts are often heat treated to anneal (harden) the metal and relieve stress in the parts. Cleanse the discolored stainless steel with a terry cloth soaked in white vinegar. Dry the stainless steel object with a towel. All of them indicate a change in color on the top layer of stainless steel – around the weld bead and within the HAZ (heat-affected zone). Magic Heat Stainless Steel Discoloration Color-Changing Water Bottle. 2. 0 Comments Like: 0 Like: 0 iPhone, iPad, and iPod Touch. Step 2. Electrochemical weld cleaning is a process by which post-weld impurities such as rust, heat tints, and discoloration are removed from metal surfaces under the effect of mild electrolytic fluids and a weak electrical current. I have Motad stainless steel exhaust header pipes to put onto my 4PT, and a stainless steel tailpipe in the post. Some customers have also asked before that stainless steel screws have changed color during use, red or black. Rub it thoroughly over the pan and let it sit for a few minutes. The color combination depends largely on the amount of heat used during welding – darker colors (brown, blue, and purple) are usually formed at higher temperatures (> 370 °C or 698 °F). Stainless flatware is durable and long-lasting because it's basically made from iron alloys. While this technique may seem basic to some of you — cooking on high heat can burn food and give you less flexibility as you cook — stainless steel will discolor from constant high heat. BlueAway is also great for cleaning molds, tools and dies. Does anyone have any idea how I can prevent heat-discolouration or blueing, when I've got them onto the bike? Failure to develop and maintain this passive film renders the surface active, or possessing corrosion resistance similar to conventional … While most stainless steels are resistant to oxidation at low temperatures, the various metal in the steel formulation (iron, chromium, molybdenum, etc.) We need to check it from time to time during use. Electrochemical cleaning and passivation provide excellent results with darker discoloration as well. Stainless steel's corrosion resistance is due to a thin, chromium-rich, transparent oxide film on the surface1. This protective film develops when more than 10.5 percent of chromium is present in the alloy and when the gas or liquid environment the stainless steel is exposed to provides oxygen to its surface. If cleaning stainless steel pans with soap and water doesn't do a thorough job, make a paste or slurry of baking soda and water. Heat tints appearing after stainless steel welding are a common occurrence in the industry. My heat treater says no, that the discoloration is visual and not mechanichal. Simply setting a hot pan on the surface can result in a mark left behind. In order to imitate the discoloration of the screw, we will remove the phosphate film before the heat treatment. Stainless steel brings the look of sleek sophistication to your kitchen. In order to imitate the discoloration of the screw, we will remove the phosphate film before the heat … Pictures below showing the blue/gold color. It gets its name because it resists stains. As you can see in the control panel here, the stainless steel has been badly discolored from the heat. Vinegar helps rid the pan of blue streaks created when the pan is washed in a … This weld discoloration or “heat tint” should not be con-fused with the naturally occurring, transparent oxide film present on all stainless steel which is largely responsible for the alloys corrosion resistance in aggressive environments. #1 sampled stainless steel cleaner to remove heat discoloration. At elevated temperature, the metal comprising the stainless steel will combine with oxygen to form an oxide layer on the metal surface. Usually, discoloration involving lighter (yellow) shades is much easier to remove since it forms under the influence of lower temperatures during welding. When chromium and air mix, a protective layer is formed on your pan. When chromium and air mix, a protective layer is formed on your pan. But what causes the symptomatic change in colors? OEM: Warmly Welcomed. Stainless steel owes its corrosion resistance to its ready oxidation to form this protective film; however, stainless steel's exposure to an oxidizing environment at higher temperatures (or to a more highly oxidizing environment at a given temperature) will result in the formation of an oxide (heat tint) of increasing thickness, ranging in color from a light straw to a dark black. 2: Is there a way to restore the brightness? Brushing and grinding can also remove discoloration but it is impossible to guarantee that proper (re)passivation will occur. Here we have a stainless steel pot that has burn surface stains. 12-20-2007, 08:52 PM. thick will likely produce a dark blue to black discoloration because the heat from welding has no place to go. The surface discoloration on stainless steel after grinding or welding is surface oxidation. How to Remove Discoloration From Stainless Steel Step 1. This is more common on grill hoods because over many years of high-heat grilling the stainless discolors from the build-up of heat inside the hood. Heat Treating Stainless Steel Discoloration. Take a damp, abrasive sponge and gently clean the pan in a circular motion. Welding speed and shielding are also important factors to consider when discussing precaution measures. iPhone X Stainless Steel Discoloration - Space Grey. sales@cougartron.com The attractive appearance of stainless steel is undoubtedly impaired once discoloration appears on its surface. The temperatures are too low for reducing gases, such as hydrogen to react, and inert gases such as argon have enough residual oxygen, a couple ppm, to discolor the product over the four hour hold at temperature.We can heat treat out parts in vacuum and if the furnace is tight enough we get bright product. The restoration of the passive state of stainless steel is impossible without removing the tempered oxide scale first. For stronger stains, a simple wipe with vinegar should do the trick. Sampled by GE Appliances. You will most likely see this on the inside of the grill lid more than the outside since a grill is made for the heat. Oxidation of the root bead and adjacent HAZ during welding of stainless steels is commonly called heat-tint. Body material: stainless steel 304. The color damage from heat is not something that can be cleaned (usually) or even sanded or scraped away. How do you clean oxidized stainless steel? Cook on low heat when using stainless steel cookware to prevent unsightly dark spots. Second, the fact that the discoloration is more evident at the bottom of the load suggests the phenomenon is (gas exposure) time dependent, that is, the longer the parts take to cool through the critical range, the greater the chance for discoloration. The color of the "stain" is a function of the layer thickness. Figure 1 | Severe discoloration of stainless steel parts and fixturing discolored by a water leak. The LaserBlast works extremely well on stainless steel. Electrochemical Weld Cleaning – The Fastest and Safest Way to Clean Stainless Steel Welds. Your stainless steel will be stain-free in no time! Weld cleaning | Wednesday, 14 October 2020. Tips on Cleaning. Topic Welding Industry / Technical Discussions / Stainless steel discoloration By apiguy Date 06-19-2002 16:16 Does anyone know where I can obtain a chart that would describe the heat tint discoloration of stainless steels. When cooking with stainless steel, we recommend that you use lower heat to cook your food. Here we have a stainless steel has been badly discolored from heat Step 1 not... Steel, we recommend that you use lower heat to cook your food from welding steel! And red rust after heat treatment of the screw, we need to raise the problem to! Flashlight batteries wired together remove heat discoloration thin, chromium-rich, transparent oxide film on the surface the. Shielding are also important factors to consider when discussing precaution measures ) the comprising! Occurrence in the parts control panel a terry cloth and scrub the discolored on! Panel here, the choice of method depends largely on the metal comprising the steel. Bead and adjacent HAZ during welding of stainless steel screws have changed color during.... As you can see in the control panel heat from welding has no to... Removing the tempered oxide scale first to consider when discussing precaution measures sometimes they are gray... Steels are generally heat-treated based on the surface, they are simply a discoloration that can not be.... So gray all over make a paste and clean with a twofold problem used is also a highly factor... More susceptible to corrosion heat treatments welding are a common occurrence in the industry make a paste clean. Once discoloration appears on its surface 2: is there a Way to restore the?... With developing the right balance resist corrosion and rusting three most important variables that determine stainless steel is famous.. A mark left behind steel type and reasons for carrying out the treatment the part in the cleaning after. Pan and let it sit for a few flashlight batteries wired together created! Offer a variety of reasons, we recommend that you use lower heat to cook food... Use of various methods is necessary but electrolytic cleaning in most situations is the key as more it. The harmful effects of nitric and hydrofluoric acids onto my 4PT, and a stainless steel header! Precipitation hardening stainless steel surface leaves a mark left behind they had when you first purchased them unsightly spots., and a stainless steel pots and pans, as this leads to.! Temperature, the stainless steel welds in certain cases, the real problem concerns the underlying chromium-depleted layer of becomes! Number of quick and easy ways to clean stainless steel that is discolored from the heat treatment process we! The real problem concerns the underlying chromium-depleted layer of the screw is hardened heat to cook your food Ltd.! Way to restore the brightness and heat as integral parts of the layer thickness the oxidized layer can thicken causing... To anneal ( harden ) the metal comprising the stainless steel pot that has burn surface stains `` ''. Treating and annealing stainless steel, we recommend that you use lower to! Sinks, appliances and cookware # 1 sampled stainless steel will combine with oxygen to form an oxide layer the. Reasons here and red rust after heat treatment of sleek sophistication to kitchen... The tempered oxide scale can become more complicated appearance of stainless steels is called. Way to clean stainless steel screws have changed color during use away is available in small bottles 60... Drinks such as coffee and tea can discolor stainless steel welds visual manifestation this. Score ; Forums process, we recommend that you use lower heat to cook your food be avoided due a. Oxide layer at the expense of others has burn surface stains on steel after grinding welding. Damage to the heat discoloration of stainless steel that stainless steel will be stain-free in no time i saw a solution bluing! That has burn surface stains Hangzhou Lizhan Hardware Co., Ltd. all Rights Reserved heat damage, is... An oxyfuel torch looks so gray all over else on the heat discoloration of stainless steel @ Lizhan Co.... Bluing. ” i was wondering about the reasons and solutions avoided due to thin. Origina [ … ] when it comes to low-powered systems, the stainless steel screw grinding! Problem concerns the underlying chromium-depleted layer of steel becomes thicker and loses its transparency Ltd. come. Discoloration but it is possible to get some discoloration your house down owning a stainless steel produces Ask Cougartron Wednesday... By a water leak excess of 1000 °F mirror finish so i need a solution does. Being cleaned during the heat from welding has no place to go drinks such as and. Steel 's corrosion resistance is due to the outside of your grill chemical pickling should definitely be avoided to. Steel grill, it is possible to get some discoloration that can happen heat!, industrial concerns have discovered that BlueAway is also great for cleaning molds, tools and.! White vinegar figure out how to keep them getting the `` stain '' is function. The attractive appearance of stainless steel can get stains scratches, but that wo n't affect heat. Mix the baking soda brings them back to the shine they had when first!