Choose from our selection of Inconel, including high-strength 625 nickel rods, high-strength 625 nickel sheets, and more. Although different companies and entities may apply their own definition to the term, in general, surface finishes below 0. 3 mm. (a) Microstructure alterations of turned surface of Inconel 718 under dry condition and MQL 50 mL/h using at V c of 120 m/min, f of 0. Its performance even exceeds that of stainless steel. 008 mm thick soft skin layer is created, for example, by. Abstract. But due to its superior attributes, Inconel 718 is quite hard to finish with traditional machining/finishing processes. In this research, a novel joining technique has been developed which utilizes microwave energy to produce dissimilar joints of Inconel 625 and SAF 2507. , + 1550°F/24 hr, A. Inconel. Monel K500® is a nickel-copper alloy with the same corrosion resistance and characteristics as the Monel 400®. 0% – 23. In 2006 we introduced our stem Superfinishing as a standard addition to all of our valves and provided it at no additional cost. on an investigation into the microstructureand . Dissimilar metal joining has always been a challenging task because of the metallurgical incompatibility and difference in melting points of alloys being joined. Composition is shown in Table 1. Introduction. 12 Si 0. ) Therefore, the paper aims to investigate on the influence of the peak current and infeed during finishing WEDM on the surface properties of Inconel 718. 005”. We strongly focus on developing top class solutions for future surface quality technologies across all industries – automotive, e-mobility, semiconductor, and medical, among others. Developed in the early 20th century, nitriding has evolved into a standard process across many industrial applications. Inconel 600 is a standard nickel-chromium-iron alloy used in heat and corrosion resistance. For deep slots reduce the Ft. Alloys coded 600, 617, 625, 690, 718, and 750 include type variants and treatment variants such as solution annealed and precipitation-hardened conditions. Likewise, both hydrochloric and sulfuric acid. Superfinishing is used for applications in which surface. 25 µm or nominally 10 µin can be defined as having a superfinish. These properties are additionally in charge of making it as the. Slot milling was performed on the rectangular bars (190 × 63 × 24 mm) of Inconel 718 using a CNC machining center (LG-800 Hartford). Developed in the early 20th century, nitriding has evolved into a standard process across many industrial applications. In this review paper, I have tried to do a comparative study of chemical, mechanical properties of Inconel 718, 625, 825 and 601. View PDF View article View in Scopus. The commercial machining of such an alloy is a key part of manufacturing technology. Excellent strength from -423 degrees F to 1300 degrees F (-253 degrees C to 705 degrees C). 0. The skill is operator-dependent and is. SFM = surface feet per minute. Nr. The surface treatment is done using superfinishing film. Rigidity, rigidity, rigidity. Hence, this paper presents a novel magnetic field-assisted batch superfinishing (MABS) process which makes use of a magnetic field applied by two pairs of magnetic poles rotating outside an annular chamber mounted with a number of workpieces concurrently. Superfinishing is a process in which a rotating workpiece is finished by a relatively soft stone with fine abrasive oscillating parallel to the workpiece surface. MAN-863 contains sulphur, but has a milder odor, and is gentler to the operator’s skin than MB-30. Superfinishing Machine Nano. Production ended in early December 2015. These alloys include the titanium alloys (e. ”. A number of different abrasive types and shapes are available for applications including the grinding of inconel and similar alloy turbine blades to impart a final geometry and create. Machine rigidity, fixture rigidity, and tooling rigidity. SiCf/SiC CMC has a broad range of applications, especially under extreme conditions, due to its excellent properties including high strength and stiffness, high wear and temperature resistance. C. Zhou CQ, Qian N, Su HH, et al. Patented ceramic SG grain for increased cut rate on carbon and stainless steel. 600 Inconel has a chemical composition of Ni 72%, Cr 15. Astm B168 Inconel 601 Pipe, Size/diameter: 4 Inch, Material Grade:. Inconel 718 is one of the most difficult-to-cut materials, with an exceptionally short tool life. g. Therefore, Inconel alloy, due to its superior attributes, has a wide scope for the improvement in surface integrity. 36. This was a full Kline system replacement headers, cats and exhaust. Inconel Alloy 625 (UNS designation N06625) is a nickel-based superalloy that possesses high strength properties and resistance to elevated temperatures. Super alloys are referred to as high performance alloys that function well in environments with elevated temperatures. A. Messages. Binder Jetting is a lesser known but versatile 3D printing technology which has applications in a variety of industries. The. Good luck!Tip 1: Use an Automated Welding System for Inconel. This ceramic grain has a unique microcrystalline structure that is self-sharpening. Plus, we have the foremost technical and sales expertise to develop custom solutions for you. REM’s industry-leading isotropic superfinishing technology, the ISF ® Process, is the specified surface finishing/surface polishing process for a wide range of aerospace power. Our end mills are designed with the user in mind, and we make sure they are made with high-quality materials. Depending on the accuracy and surface roughness, the machining can be divided into rough, finishing and superfinishing (surfacing) cuts. It also demonstrates remarkable protection against corrosion and oxidation. Inconel-800 is a nickel–iron–chromium alloy with outstanding oxidation resistance and good yield strength []. Inconel 718 (IN718) is the most frequently used . -----Toby Baughman. Inconel 625 alloy has advantageous properties, such as heat resistance and corrosion resistance, which make it a suitable material in aerospace, energy, and marine industries. Where the world gathers for plating, anodizing, & finishing Q&As since 1989 -----CLEANING OF INCONEL 625 HEAT EXCHANGER 2005. Inconel is a family of high-performance nickel-based alloys developed by Special Metals Corporation. Kovar is a nickel-iron-cobalt alloy known for its excellent thermal expansion characteristics. Known for its oxidation and corrosion resistance, Inconel is ideal for harsh environments and high pressure and/or high heat applications. Be. The effects of line laser energy densities in the range 0. Our latest Micro expansions offers the following features. The 18 th China International Machine Tool show (CIMT 2023) will be held in April. Honing and superfinishing sticks are commonly used in super and micro finishing applications as are lapping and superfinishing wheels and diamond compounds. Additive manufacturing is a relatively young technology that uses the principle of layer by layer addition of material in solid, liquid or powder form to develop a component or product. Striving to live Aloha finishing. The machinability of the different grades of super alloys are also. Superfinishing is utilized in applications where the component's surface polish is essential to its success. Abrasive processes like grinding, lapping, honing, polishing, and superfinishing are constantly developing, and help to obtain a fine surface finish along with high efficiency. The commercial machining of such an alloy is a key part of manufacturing technology. Nickel-based superalloy Inconel 718 is widely used in aerospace structures and jet engines due to its high temperature stability, high hardness, special heat resistance, high tensile strength, and fracture toughness. Figure 4 The BSE images obtained from the radial plane of NHT and HT samples in different processing conditions. If you'd like more information or have questions about our end mills, feel free to contact us. revealed that the surface roughness of Inconel 718 decreased with the increased cutting speed and the reduced feed. 2, 3 and 4 Flute- Square, Ball, and Radius. To the naked eye, polishing leaves a gleaming surface and metallic shine, but the process can actually result in microscopic. A major attribute of Inconel 718 is its processing versatility. 5 mm and cutting speed of 45–55 m/min. Types of Inconel for Investment Casting. one-piece forging followed by heat treatment then an additional grinding and then the piece de resistance the Supertech Superfinishing. Thakur et al. I've been machining a lot of Inconel 625 and Incoloy 800H lately. Energy efficiency results in fuel efficiency. Abrasive flow machining (AFM. Belt finishing is a superfinishing process that enables to reach fine surface integrity properties, i. Now depending on the application being manufactured,. This ultimately reduces the regularity that the grinding wheel needs. Applications: Roll superfinishing and flat lapping applications. Inconel Alloy 625 (UNS designation N06625) is a nickel-based superalloy that possesses high strength properties and resistance to elevated temperatures. View. Superfinishing is a chip removing machining process. Inconel 718, therefore, was characterized by better machinability . One Piece Valve. Inconel 625 is a nickel-based super alloy with high strength properties and resistance to corrosion, including H 2 S and CO 2, and elevated temperatures. Get optimum performance and durability for your engine & gearbox components. Wolcott, NY. Nr. This material has been widely used in the manufacture of components for liquid rockets, as well as parts for aircraft turbine engines, cryogenic tankage, etc. Wire electric discharge machining a nontraditional machining technique gives high accuracy. Traditional machining methods and ordinary cutting tools failed to. Invar is a nickel-iron alloy that exhibits superior dimensional stability across extreme temperatures. Ted Mooney, P. Q. 35. This is precisely the feature that produces the unique characteristics of a perfectly machined surface. As a technology of additive manufacturing (AM), selective laser melting (SLM) is widely used in metal printing, such as super-alloys, stainless steel. We Grind The Future. Meaning of inconel. Park et al. followed by their patented Superfinishing of the surface to ensure that each valve is free of any imperfections and the dimensions are precise. Calculate the Weight of Nickel Alloy / Superalloy (Monel, Inconel, Incoloy, Hastelloy) Pipe, Bar, Sheet, Plate & Wire Now. The process of isotropic Super-finishing (or ceramic tumbling) reduces. irjet- magnetic abrasive finishing of inconel 718 super alloy using permanent magnet Inconel 718 (IN-718) has excellent mechanical and chemical properties at high temperature, which has been widely applied in aerospace, ocean, and chemical industries. MAN-863 Honing Oil Ideal for applications where petroleum based honing oils cannot be used. The addition of these elements gives the alloy improved formability and weldability compared. Inconel’s high-temperature strength is developed by solid solution strengthening or precipitation hardening, depending on the alloy. Ceramic Aluminium Oxide. Decrease in radiant engine bay pretty significant. These Inconel alloys or superalloys are nickel-based alloys that exhibit traits such as high resistance to corrosion, oxidation,. The vibratory finishing machine is the most preferred choice of tumbling machine for metal parts. In this paper, chemically-assisted MAFFriction during the hot extrusion of Inconel 625 superalloy tubes causes severe wear of the mold and plays a decisive role in the quality of the workpieces. Based on a nickel-chromium alloy with added aluminium, these alloys have properties which make them perfect for use in the heat treating industry. Attachments can be permanently mounted, manually moved or NC controlled. Hard Part Machining > 60 HRC Exotic Fasteners Investment Castings Machining Forging Machining Ultra-precision machining Superfinishing 0. Abstract. It is available as an option for any transmission build as well as individual components such as planetary sets and shafts. Lapping is a sanding or polishing method used to create an accurate finish on a flat or domed surface of a part. 2. INCONEL® The registered trademark name, Inconel, is applied as the prefix name to more than twenty different highly corrosion resistant high temperature strength metal alloys produced by Special Metals Corporation. industries. In this process, granular magnetic abrasives composed of ferromagnetic material (iron particles or steel grit) and abrasive powder. Stress-relieving metal prior to working can help reduce surface hardness. soft 8620, Inconel and Zirconium. 2 Ra Micro drilling 0. The stone typically oscillates at an amplitude of 1–4 mm and a frequency of 10–50 Hz; and it contacts the workpiece at light pressure, typically 0. Very few attempts have been made in the finishing of Inconel -718. A mixture of abrasive material furthermore lubricants is spread on a flat plate called a lapping plate. A series of machining experiments were performed to benchmark the new EL process against conventional MQL and Flood conditions on the surface integrity of Inconel. 50 mm [95] and (b) sub-surface microstructure of Inconel 718 during dry and wet machining using V c of 60 m/min, f of 0. The result was a 500 percent increase in tool life and an 86 percent. It was recently selected as one of the 10 Best Precision Machine Shops for 2021 by a leading industry trade magazine. It can be fabricated over a wide range of temperatures, forging reductions, and strain This paper presents an initial work on a new nozzle design for EL, based on two charged electrodes. Max 0. The FMAB is self-adaptable and controllable. Composition of Inconel 718 Element % Element % Ni 53. 800HT has excellent creep strength at temperatures above 700°C. 800H has good creep-rupture properties at temperatures above 600°C. Very few attempts have been made in the finishing of Inconel -718. Inconel, as well as any high nickel alloy has to be struck with a highly acidic Wood's bath. For instance, when manufactured products possess smooth surfaces, they resist wear and tear better than finished parts with rougher surfaces because friction levels remain lower. Akhtar et al. For inconel alloys, nickel is the base of these materials and typically accounts for 50% – 70% of the final alloy. The composition of the ingot and powder (mass percent wt%). The unbounded powder is prepared for experimentation by homogeneous mixing of. Monel K500® is a nickel-copper alloy with the same corrosion resistance and characteristics as the Monel 400®. HM standard tools Titainox series and special tools for Inconel: India: Engine parts and leap parts: Inconel e nickel: HM standard tool 118 series: Russia: Landing gear:. Inconel alloys, also aptly named superalloys are nickel-based and exhibit traits such as high resistance to corrosion, oxidation, carburization, pitting, crevice, corrosion cracking, and high-temperature strength. Effect of energy distribution on the machining efficiency and surface morphology of Inconel 718 nickel-based superalloy using plasma electrolytic polishing. Inconel 718 is one of few such materials which is widely used for various industrial applications such as nuclear industries, marine applications, solar power stations, heat exchanger tubing etc. 5%, Fe 8%, Mn 1%, Si 0. mostly involving the use of hard-to-machine materials such as, among others, the Inconel super alloys. Cold-drawing metal hardens the work surface. INCONEL® alloy X-750 2 Tab le 4 - Effect of Heat Treatment on Room-Temperature Resistivity of Hot-Rolled Bar Tab e 5 - Modulus of Elasticity Table 3 - Thermal Propertiesa a Material heat-treated 2100°F/3 hr, A. alloys. balikpapan@teknokraft. Material Notes: Nickel content above includes cobalt. The present study focuses on exploring the effect of. I mainly use a 5/16" Hanita Varimill with a TiAIN coating and run it at 1900 rpm and 20 ipm. In some developing countries, the raceways of large bearing rings with outer diameters of 200 mm and above are ground and then are assembled and ready to leave the factory. With the use of our robotic and mechanized welding with ensure your overlay meets your quality and performance needs in service. Superfinishing. Abstract: Inconel 718 is a Ni superalloy widely used in high responsibility components requiring excellent mechanical properties at high temperature and elevated corrosion resistance. As catastrophic tool failure can destroy an expensive workpiece, automatic tool condition monitoring (TCM) has become particularly critical. For one thing, Inconel is much more expensive than stainless steel alloys. Chemical processing, nuclear, petrochemical, aerospace and marine industries widely use these superalloys due to the fact they are. 2. Nb improves the alloy welding stability without being. Melin now offers several existing Carbide End Mill series in Micro sizes as well as new micro products series. For 2. However, the understanding of this process is not complete. Identifying what wire. Its ability to withstand high stress and a wide range of temperatures, both in and out of water, as well as being able to resist. More stringent requirements on roughness parameters, surface finishing, or superfinishing technologies will be used in most critical zones of the components. Superalloys like Kovar and Inconel provide many benefits, but the high cutting forces required to machine them generate a tremendous amount of heat and workhardening. Traditional superfinishing techniques including grinding, honing, and lapping can be used to remove these flaws. Inconel 718 is a superalloy, considered one of the least machinable materials. 10 mm/rev and a p of 0. Influence of Some Superfinishing Processes on Surface Integrity in Automotive Industry. Tip #2: Start with a Solutionized Piece of Metal. 5 µm; Sz ≤ 10 µm). Depending on the accuracy and surface roughness, the machining can be divided into rough, finishing and superfinishing (surfacing) cuts. Maybe that's 3 but I'm going to call it one. View. RPM = SFM X 3. Key Average Application Higher or lower values may be obtained under special conditions. Since, high cutting speed results in higher rate of wear, cutting. Three terms, one procedure. 15%. Inconel 690. Ti6Al4V and Inconel 718 with high resistance to temperature, poor thermal conductivity and high hardness at elevated temperature have exhibited low machinability. we are intend to do heavy degreasing using caustic soda [affil link] followed by picking. These superfinishing processes, play an important role to achieve the desired surface finish. SMM = surface meters per minute. 1. Superfinishing technology evolved from the stone honing of bearing raceways to produce very smooth surfaces. It has outstanding features like high shear strength. Popat, K. Roundness of these tubes is very important feature. Inconel 600 can only be hardened by cold-working practices, making it ideal for welding, brazing and soldering. Superfinishing of polycrystalline YAG ceramic by nanodiamond slurry. 82 / Tool Diameter. Get Quote. One would expect liquation and solidification cracking to be less of a problem in. RPM = SMM X 318. This article will discuss Inconel, how it is made, its. Due to law content of Aluminum and Titanium, it exhibits good fabricability too. 166-179. 4856) is used for its high strength, excellent fabricability (including joining), and out-standing corrosion resistance. Magnetic abrasive finishing (MAF) has attracted much attention as an advanced nano-finishing technology in achieving high-quality surface for finishing superalloys, composites, and ceramics. Inconel 718 is nickel based alloy, difficult to machine and precipitate which having tremendous mechanical properties. The presented data for the Inconel samples show that the stress sensitivity of the Hall coefficient cannot be described solely by the. These Inconel Pipes possess some outstanding features such as easy Formability, excellent weldability, good machinability, durability and many more. 0/2. Contact Supplier Request a quote. When it goes through the forging process, it becomes highly resistant to oxidation, corrosion, and damage due to high temperatures. MSRP: $43. This intermetallic phase acts as a ‘glue’ on the grain boundaries. 50 with. The workpiece is then placed on which lapping plate, furthermore the partial and the plate are rotates against each various. Inconel serves in extreme environments because of its high strengths, high service temperatures, and extreme corrosion resistance. , GCr15 and. This makes it an ideal alloy for high-performance. Inconel 718 (IN718) samples have been produced by selective laser melting (SLM). performed the LPB process with different hydraulic pressure (12, 15 and 18 MPa) on Inconel 718. . Superfinishing is a chip removing mac. Inconel 718, a hard-to-cut superalloy is reputed for having poor machining performance due to its low thermal conductivity. +62-542-8863300. is a machine shop that specializes in complex, tight tolerance parts made of titanium, nickel alloys, stainless steel, aluminum, plastics and other exotic alloys. 1. For cylindrical and tapered rollers the most common operation for superfinishing is centerless throughfeed. The 0. 002 to 0. To achieve the precise surface finish and enhance the process performance, process optimization is necessary. Fha Uns N07752, Uns N07750 Inconel X-750 Pipe, For Construction,. . low surface roughness and compressive residual stresses in the external layer. 36. However, these properties also bring new challenges to manufacturing. High-cycle fatigue (HCF) tests were conducted on samples fabricated by two powder-bed additive manufacturing techniques. Inconel 718 is a precipitation-hardenable nickel-chromium. Inconel 718 is a nickel-base alloy which is difficult to machine. As one of the four major machine tool shows in the world, it has attracted numerous exhibitors and visitors due to its significant influence and. For more information, contact us at +1-714-337-3321. Cutting forces got reduced at 6000C pre heating temperature compared to room temperature condition. It is one of the most widely recognised trademarks in the industry, associated with the original development of 18 different alloys. But due to its superior attributes, Inconel 718 is quite hard to finish with traditional machining/finishing processes. You can use it for deburring, rust removal, surface smoothening, and polishing. 4mm. Sell. Steel-Iron-Nickel Alloy – There are. Experimental Procedure. Zhang S, Li JF, Wang YW (2012) Tool life and cutting forces in end milling Inconel 718 under dry and minimum quantity cooling lubrication cutting conditions. Abstract. Generally, the cutting fluids allow the maintenance of a better tool topography that can generate a superior surface quality of machined material. Includes superfinishing, a combination of abrasive. Definition. We apply more than 30 years of experience in the development of each and every Supertech racing valve we sell. At Specialized Turning, we are experts in machining inconel alloys to produce the best possible quality and value. Good machinability and surface integrity of IN-718 have always been challenging topics in the field of mechanical. Honing is a method of internal grinding used to achieve a precise surface finish and shape on the inside diameter (ID) of a tube, bore, or hole. Article Google Scholar Liao YS, Liao CH, Lin HM (2017) Study of oil-water ratio and flow rate of MQL fluid in high speed milling of Inconel 718. Tools must withstand a high level of temperatures and pressures in a very localized area, the abrasiveness of the hard carbides contained in the Inconel 718 microstructure and the adhesion tendency during its machining. , 2015). Meeting the required strict quality checklist with maintaining a high level of productivity and sustainability is a substantive issue. 007%, and hydrogen content is 0. Information on the physical and mechanical properties of these products, the most comprehensive range of alloy composition s and product forms. alloys. ₹ 3,235/ Kilogram. About Our Company AN ISO 9001 : 2015 CERTIFIED COMPANY Established in 1996, Vintex Steel & Engg. 1–0. They were building a new bridge up river at the time, river rose a couple months before and pretty much washed everything downstream. If you’ve ever seen the term. And the optimal surface finish obtained at feed rate of 0. The linear and fast movement ensures constant stock removal from the workpiece and uniform stone resharpening on the superfinishing stone. Inconel 718, which scaled to mass production in 1965, is a well-known, nickel chromium workhorse material for the additive manufacturing industry. The results indicate that sur- face quality and geometric tolerances improve with increasing. Machining of Inconel 718 is very difficult due to its toughness. The first patent for a superfinishing machine for ball bearing. Chromium gives Inconel alloys their high resistance to corrosion in extreme elements. Iron content as remainder. Published 19 July 2017. However, at lower temperatures, steels like 17-4PH stainless will have a higher strength than Inconel. A systematic review is conducted to assess and evaluate various cooling and machining strategies for the good machinability of Inconel 718. Superfinishing Flexible and universal. The results showed that diamond wheels have advantages in terms of the performance-to-cost ratio when grinding CMSX4. The 0. We also offer a variety of flute styles and angles so that everyone can find what they need. 1). The present work is an attempt to make use of Taguchi optimisation technique to optimise cutting parameters. He reveals how the company is responding to the ever-increasing health and safety demands of the market. See the Electroplating Engineering Handbook for more info. Delta Machine Company, LLC — based in Huntington Beach, California — is a machine shop specializing in complex, tight tolerance parts made of titanium, nickel alloys, stainless steel, aluminum, plastics, and other exotic alloys. Notch wear was also observed on the secondary cutting edge while flank wear progression was rapid and reached 300-350μm after a. Let us know more about the differences between the two alloys in. The metal has already gone through some type of finishing such as polishing or another surface modification process. New water-based fluids as alternatives to oil-based fluids in superfinishing processes. IndiaMART. Inconel 718, a Nickel based super alloy is widely used for aerospace applications mainly due to its high temperature resistance and high strength to weight ratio. We have a client who intend to clean heat exchanger (tubes of Inconel 625)having a different scale of carbonate, carbons, silica. Get Best Price. AbstractThe relatively new technique of fluidized bed assisted abrasive jet machining (FB-AJM) is applied to finishing the inner surfaces of tubular Inconel 718 components. In partnership with the world leader in the manufacture of epoxy-ceramic compounds, Super Finishing brings to Brazil the system of resinous paint loaded with ceramic particles. Download Citation | On Jan 1, 2023, Ch Dasa Manikanta and others published A comparison of ZnO nanofluid and conventional coolant was made. Modular system. The QPQ coating offers several benefits. Kantor Cabang. New White Paper – Considerations for Optimizing Surface Finishing of 3D Printed Inconel 718 Posted on June 19, 2019 January 24, 2023 by Diana Robbins Learn about the challenges of surface finishing additively manufactured metals and alloys and opportunities to optimize the process, with focus on the widely-used nickel super-alloy. Programming Supervisor. In age-hardened condition, Monel K-500 also has greater tendency toward stress- corrosion cracking in. Cycle time: 30 secs at 25 °C. reaming, automatic works, milling, form turning, planing, parting off, drilling, boring, sawing or superfinishing. It is known that pyramidal abrasive media are more prone to rapidly improving the surface roughness compared to. 01%, nitrogen content is 0. Figure 6. Pretreatment consists of degreasing, pre-etch in HNO3/HF/H2O, electroclean in Na3PO4/Na2CO3/NaOH, and etching in sulfuric acid. During superfinishing of cylindrical surfaces, an axially oscillating abrasive stone is pressed against a rotating workpiece. 4856) is used for its high strength, excellent fabricability (including joining), and out-standing corrosion resistance. Easy accessibility. This makes Inconel even harder to work, causing more stress to tooling. As one of the super alloys containing a niobium age-hardening addition, Inconel 718 takes advantage of its very high strength and anti-fatigue properties []. Lapping is a superfinishing process used to create an ultra-flat surface finish. Abstract. Heat Treatment of Gears is designed to provide the gear design engineer with a better understanding of heat treatment and its effects on gear quality and performance, especially as these considerations are critical to ensuring that the gears perform satisfactorily under anticipated service conditions. Abstract and Figures. Inconel Thread Coating Required. INCONEL® nickel-chromium alloy 625 (UNS N06625/W. 3M™ Lapping Film Micron graded aluminium oxide mineral particles coated on a polyester film backing to provide precision finishes. Shankar et al. Inconel 718 is a nickel-chromium-molybdenum alloy that is made to offer resistance to the variety of corrosive conditions, pitting and crevice corrosion. The superfinished surface was free of stress raisers, distressed metal, and peak asperi-ties—all of. Sangani.