Armoloy® TDC Improving the Technology of Thin Dense Chrome 78Rc Armoloy® TDC is a low temperature, multi-state surface finishing process. Armoloy utilizes proprietary chemical solutions and application processes that are carefully monitored to produce it's TDC, a silver satin matte chromium coating. Precise deposits insure fidelity to part contours and details without the edge build or "dog-boning" associated with conventional chrome plating processes. Value-added benefits of Armoloy TDC Coating. 78Rc Surface Hardness Reduce wear and friction in moving parts Enhance corrosion resistance Absolute adhesion to basis metal - no chipping, cracking, flaking, or peeling Improved release characteristics in plastics forming tools - cores, cavities, lifters, pins, screws, plates Reduced Maintenance and part replacement costs Armoloy TDC technology is unlike all other conventional hard chrome plating operations. Our proprietary TDC coating conforms precisely to details in metal tools, resulting in a hard (78Rc), slippery, and corrosion-resistant tool surface. SPECIAL Armoloy PROPERTIES ADHESION: Armoloy will not chip, flake, crack, peel or separate from the base material under standard ASTM bend tests or under conditions of extreme heat or cold. Armoloy, being compatible with both ferrous and non-ferrous metals, allows maximum design selection of base materials. Aluminum, magnesium and titanium are not considered good candidates for base material selection. Illustration of Density Conventional Cr Armoloy HARDNESS: Armoloy has an equivalent hardness in excess of 78 Rc when deposited. Measured by conventional micro-hardness methods, the host material will modify this measurement to some small degree. Vickers Diamond measurements produce a 1360-1400 hardness rating. FRICTION REDUCTION: MATERIAL      AGAINST MATERIAL STATIC SLIDING Steel Steel 0.30 0.20 Steel Babbit 0.25 0.20 Steel Armoloy 0.17 0.15 Babbit Armoloy 0.15 0.13 Armoloy Armoloy 0.14 0.12 CONFORMITY: Armoloy conforms exactly to the base metal surface. All threads, flutes, even scratches are reproduced in detail. RMS finish will improve slightly, to a low of about 8 RMS. Below 4 RMS the process may deter slightly. Internal and external surfaces on nearly all shapes and configurations can be uniformly processed. In general, slots or grooves less than .187 wide, having a depth greater than width, and bores less than .187 in diameter may not be uniformly processed (Such parts should be submitted for test runs). The finished Armoloy coated surface will have excellent lubricity qualities. THICKNESS: Armoloy coating will range from .000010" to .0003" per side. Normal proven average deposits are in the .0001" to .0002" per side range. Tolerances can be held to +/- .000025" on deposits up to .0002" per side. The Armoloy process does not create "edge build-up". Armoloy thickness is always in direct relation to the base metal, and will vary from one base metal to another. However, thickness established for each will remain constant and predictable. EFFECT ON BASE METAL: Armoloy will not significantly affect the tensile, yield or fatigue properties of the base material. It will not affect a growth of more than .0002" per side under normal conditions, eliminating the need to undersize designs in most applications. HYDROGEN EMBRITTLEMENT: Armoloy processing and pre-process surface preparation prevents the embrittlement phenomenon from occurring. Pre-induced conditions may not, necessarily, be removed. CORROSION RESISTANCE: Armoloy resists attack by most organic and inorganic compounds (except sulfuric and hydrochloric acids). Porosity of base metals and imperfect surface finishes can affect the corrosion-resistant properties of Armoloy. However, all base materials that are Armoloy coated will be enhanced. HEAT RESISTANCE: Armoloy will withstand temperatures of -400° to 1600° F. At elevated temperatures above 1600° it will react with carbon monoxide, sulfur vapor and phosphorus. At bright red heat, oxidation occurs in steam or alkali hydroxide atmospheres. Hardness and wear resistance will be reduced at temperatures above 1600°. SAFETY: Armoloy is FDA/USDA approved for use, without concern, on food processing equipment. AESTHETICS: Armoloy is used as the final coating on parts and equipment, imparting a beautiful satiny-silver "matte" or "micro-orange peel" finish. SUBMISSION: Parts to be Armoloy processed should be submitted with a drawing indicating the surface requiring Armoloy and areas not to be processed. Masking is generally not required. Material designation of the part should be specified. Internal as well as external areas can be readily processed.   FINISHING: Parts should be surface finished prior to shipment to Armoloy. Removal of paint, scale, rust or corrosion, by Armoloy will result in extra charges. Surfaces will not be changed significantly in configuration by the Armoloy process. Armoloy will not fill scratches, pits, or dents, but will conform to such imperfections. Removal of oil, grease or protective covering that does not adhere will be done by Armoloy at no expense to the customer, except in cases of excessive applications. SHIPMENT TO Armoloy: All parts should be properly wrapped and preserved in order to protect against damage and/or corrosion and then shipped in suitable containers to give maximum protection, both prior to and after the Armoloy process. Hand-carried parts will be paper wrapped or bagged prior to delivery. PRICE: The cost of Armoloy processing is determined by the condition, configuration and surface area of the part. Cost estimates can be obtained from detailed drawing and actual costs determined by processing of test parts. TESTING: Sample test parts will be processed by Armoloy for a minimal charge. Test samples should be submitted with detailed drawings or a letter illustrating the critical areas where Armoloy is to be applied. RENEWABLE: Armoloy can be stripped and recoated repeatedly, extending the life of critical tooling or parts far beyond design expectations. Corrosion Resistance Armoloy TDC resists attack by most organic and inorganic compounds, with the exception of sulfuric acid and hydrochloric acid. Inferior metal surface finish and low part hardness may inhibit Armoloy TDC's corrosion resistant properties. Reduction of Hydrogen Embrittlement Armoloy TDC process control reduces the embrittlement phenomenon from occurring, though original manufacturing conditions may not, necessarily, be removable. The Armoloy TDC process will not affect the tensile, yield or fatigue properties of the basis metal. Pre- and post-baking are available upon request or specification. Armoloy TDC certifies to AMS-2438, AMS QQ-C-320, AMS-2406, and most other military/industrial specifications. Armoloy is extremely hard precision chromium electroplating applied to metal under rigid quality controls to produce amazing wear and corrosion-resistant surfaces. CONSUMER TESTS CONCLUSIVELY PROVE THAT SURFACES TREATED WITH Armoloy DEPOSITS OF .0001/.0002" PER SIDE ARE HARDER AND HAVE SUPERIOR ANTI-FRICTION, ANTI-CORROSION AND INCREASED LUBRICITY PROPERTIES. Armoloy is used across a variety of industries and for a multitude of purposes. With the Armoloy coating: Bearings and bearing surfaces can run longer and cooler and are comparable to a 440C S.S. for corrosion protection. Plastic molders have better release characteristics and reduced die wear when molding abrasive materials. Cutting tools experience longer wear-life. Nuclear components exhibit better anti-galling and corrosion resistance problems. Dies used in stamping, drawing, forming and blanking have sharper cuts and increases in work life. Engine and transmission parts such as valves, valve guides, pistons, gears and splines are protected without detrimental tolerance changes or variations. Standard built pumps and meters handle corrosive liquids and materials. Gears and Sprockets Hydraulic Cylinders/Rods Machine Tool Components Molds - Plastic; Rubber; Injection; Extrusion; Compression; Insert Nuclear Components Pump Housings/ Impellers/ Rotors/ End Plates Injection Screws Textile Industry Components Threads (ID/OD) Valves The Full Range of Manufacturing Metals... All Ferrous Metals: Tool Steels (1018, 4140, D-2, A-2, H-13, S-7, etc.) Cold Roll/Hot Roll Bearing Steels (52100, 9620, etc.) Alloy-Enhanced Steels Stress Proof High Carbon/Low Carbon Steels Cast Irons Most Non-Ferrous Metals: All Stainless Steels (300 and 400 Series, Inconel, 17-4, 15-5, NAK 55, etc.) Beryllium Ampco® MoldMax®/Protherm® Copper and Copper Alloys Bronze/Brass   ^back to top