Excellent electrical conductivity. This article presents a collection of data on approximately 150 copper-based alloys. Example Alloys . Some alloying elements affect stress relaxation more than others. The ores must be processed to extract the metals of interest from the waste rock. The proportions of the copper and zinc are varied to yield many different kinds of brass. Copper-Zinc Alloys. This alloy has excellent corrosion resistance and is highly resistant to attack by acids, alkalis, and bacteria. In 1962, a penny's content changed to 95% copper and 5% zinc. It also has good conductivity and tensile strength as it can be stretched without breaking. Yield Strength. Gold from the richest grave in the cemetery at the 5th millennium site of Varna, Bulgaria. Paint or spray objects with a solution of 250 grams of ammonium carbonate / 250 grams of ammonium chloride / 1 litre of water, each layer is dried for 24 hours, after reaching the desired shade wax or lacquer it. These property models are needed to simulate the mechanical behavior of structures with. Pure copper and copper alloys are easy to solder and braze, allowing them to cleanly join with other metals. Four processes to consider when joining copper and copper alloys are mechanical couplings, welding, soldering, and brazing. 11000. In many countries, as well as the more obvious copper-colored coins, "silver" coins are also copper alloys - this time with nickel; these are known as cupronickel alloys. Copper alloys are metal alloys that have copper as their principal component. Note that for leach rate. 05 mpy (0. Copper Alloys Brass is a copper alloy made by adding zinc to copper, whose properties depends on the content of zinc. Satin and Mirror Finishes. Copper and its alloys are relatively good conductors of electricity and heat. 2°C, boiling point of 2567°C, specific gravity of 8. 3kg of gold. Aesthetics crucial factor in development of earliest copper alloys. The structure of the as-cast material is. 3% or higher. The temper will determine just how malleable the copper sheet will be. IBC's Engineered Materials Division makes the Beralcast ® family of alloys, which can be precision cast and are used in an increasing number of defense,. Their composition design, preparation, and processing directly affect the final performance. Typical is a 74Cu-22Pb-4Sn composite. The uses of copper alloy with silver added will depend on the amount of each alloy that is added during the melt. Some alloys are listed under more than one element, since the composition of the alloy may vary such that one element is present in a higher concentration than the others. Brass and bronze, two commonly used alloys, are created when copper is combined with other metals. This metal alloy is typically bright gold in colour, but can be reddish-gold or silvery-white as well. This section displays photo micrographs of commercially important and/or metallurgically interesting copper and copper alloys and processings. 09/20/2018 EN (English US) 2/26 P308+P313 - If exposed or concerned: Get medical advice/attention. 22): C ≜ Q + V. Section snippets Alloy design framework. Copper alloys containing 1 to 6% Pb are free machining grades, and are used widely for machined parts especially those produced in screw machines. The metal is an essential trace. Low magnetic permeability is required in some applications, such as minesweepers. certain alloys and tempers, it increase stress corrosion susceptibility[2]. The copper patina colour has been systematically explored through a large set of short- and long-term exposed copper metal samples. If more complicated bends are required or lightly hammering or shaping will be performed, H00-H01 (1/8-1/4 hard) will be the best option. Their thermophysical properties play an important role in casting processes and are required as input data for casting simulation. Copper alloys are generally very malleable, with most being able to be rolled or. Alloy C18000, another member of the group, contains nickel,. In order to remove corrosion inhibitor from their surfaces, samples were subjected to mechanical polishing and then chemical polishing in a mixture of concentrated acids: orthophosphoric (V) H 3 PO 4 , nitric(V) HNO. copper is that alloys are stronger than pure copper due to their combination of metals, while copper does not contain any other elements blended in. This specification 2 establishes requirements for an alloy having a composition of copper, tin, lead, and zinc, used for component castings of valves, flanges, and fittings. 3 weight percent (and therefore designated as "coppers"), albeit only a handful are used industrially as electrical conductors. Gunmetals are copper alloys with tin, zinc, and lead. 40The mechanical properties of copper-nickel alloys show a combination of good tensile strength and excellent ductility when annealed. Good corrosion resistance. , non-oxidizing atmosphere. Figure 3. Cupronickels are copper-nickel alloys that typically contain from 60 to 90 percent of copper and nickel as the main alloying element. The best-known. 22mm – 3″ square. 13mm – 70mm A/F. 3% cobalt. 05: Silver, solid or plated; monel metal & High nickel-copper alloys: 0. In the wrought structures, the lead is present as discrete particles between the alpha copper grains. This section displays photo micrographs of commercially important and/or metallurgically interesting copper and copper alloys and. 3. Forms: 2-20 Ingot. And as alloyed in bronze (copper-tin alloy) about 3000 BC, was the first engineering material known to man. 2 Use—The alphanumeric code is used to. A freshly exposed surface of pure copper has a reddish-orange color. It covers manufacturers and servicenters of products such as rod & bar, strip, sheet & plate, wire, and tube. From the early days, copper had a decisive influence on the evolution of mankind and it has been the material of choice promoting the key growth industries of each era. These alloys are created to enhance the properties of pure copper, making it more suitable for specific applications. This chapter provides an overview of copper and copper–nickel alloys. Copper-nickel - Alloyed with Nickel. Copper and its alloys exhibit exceptional corrosion resistance to moisture, saltwater, and a variety of chemicals. Aluminum bronze castings are annealed at 620–670 °C. This article presents a collection of data on approximately 150 copper-based alloys. Fig. It can be coupled to tin and aluminum bronze. , 9 Paxton Court, RedwoodPark, South Australia, 5097 Telephone: +61 (0) 437 707 043. To determine the capacitance, we invoke the definition (Section 5. 1 INCH COPPER HALF BALLS - HEMISPHERE-110 ALLOY (25 PACK) $34. The two main alloys are 90/10 and 70/30. Its controlled. Copper is used as a conductor of heat and electricity as a building material. 260 Brass Chemical Properties. A team led by controversial physicist Avi Loeb is combing the ocean floor off the coast of Papua New Guinea for remnants of two meteors that they believe could actually be alien tech. 3. Their uses include marine equipment and inorganic acid and alkali handling equipment. Lancaster, in Metallurgy of Welding (Sixth Edition), 1999 10. 13 wt% Zr. Additional information is available upon request. Bronze is another copper alloy, but with tin. The property of the alloy varies as the zinc percentage changes. Master alloys are known as semi-finished products or base metals that include copper, nickel or aluminum combined with a higher percentage of one or two of other elements. 10g – 21g. Copper Alloy Supplier Database is originally derived from CDA's Standards Handbook Part 5 - Sources and CABSA. L. They have good elastic properties combined with good resistance to corrosion and corrosion fatigue. Thermal Conductivity Btu/ sq ft/ ft hr/ °F at 68°F. They demonstrated that pure Cu obliterated all E. Antimicrobial. There are more than 400 copper alloys, each with a unique combination of properties to suit many applications, manufacturing processes and environments. 2. Also, in the. The single phase alloys have excellent ductility, and are often used in the cold worked condition for better strength. Fig. Copper Alloys. Job shops. EPA as antimicrobial. copper in the range of 0. The other key properties exhibited by Copper and its alloys include: ~ Retention of mechanical and electrical properties at cryogenic temperatures. These fittings shall be produced to meet the general requirements of ASTM B 62, Alloy C83600 or the chemical and. 1 summarizes schematically the sequence of layers formed on copper alloys after commissioning in seawater (9). Corrosion. The age-hardening behavior is based on the fact that the solubility of Cd, Be, and Cr in Cu decreases with decreasing temperature. Brass works as an alloy because copper and zinc are close to one another in the periodic table and have atoms of roughly similar size. 05 mpy (0. 2023 Metallic Trend: About the Thermophysical Properties of Copper and its Alloys. The as-cast structure of the low zinc brasses consists of alpha dendrites. Laboratory testing shows that, when cleaned regularly, EPA-registered antimicrobial copper alloy surfaces kill greater than 99. Anchor Bronze & Metals, 3. Copper alloys become stronger and more ductile as temperature goes down. The current trend is to develop copper alloys with higher alloy content (e. 3. 21. Copper brazing is a widely used technique for joining copper and copper alloys due to their exceptional electrical conductivity, thermal conductivity, corrosion resistance, and formability. alloys (2% copper, iron, nickel): used in aircraft pistons; Hydronalium (up to 12% magnesium, 1% manganese): used in shipbuilding, resists seawater corrosion;The long-term, steady-state corrosion rate for copper and copper alloys, except for Muntz metal, is on the order of 1 mpy (0. Get the best deals on Industrial Metal & Alloy Spheres when you shop the largest online selection at eBay. BBB Directory of Copper near Victoria, BC. 61 shipping. ρl = Q + l. drawn ( seamless ) copper tubes for general engineering purposes. Cold-rolled copper products—including sheets, coils, rods, bars, and some plates—are produced with an “as fabricated” finish. Gunmetal - Alloyed with Tin, Zinc and Lead. The best known traditional types are bronze, where tin is a significant addition, and brass, using zinc instead. It is a form of bronze with a higher tin content, usually in approximately a 4:1 ratio of copper to tin (typically, 78% copper, 22% tin by mass). 6. Size Range. Rose gold is a gold–copper alloy widely used for specialized jewelry. Embrittlement is an important theme of API 571/572 and. Brass is an alloy made primarily of copper and zinc. Sterling silver is commonly used for plating and in the jewelry industries. A. They have high resistance against corrosion . 3 Solidification cracking. . 6% aluminium,. Brass (copper-zinc alloys) Brasses are copper alloys with 5-45 % zinc. Brass is typically applied more widely. Anchor Bronze & Metals, 3. They have high wear resistance and low friction coefficient against steel. Metals which have a designated minimum copper content of 99. In order to uncover such information, we apply active learning and generate. The results show that alloying and heat treatment do change the colour of copper alloys; the colour of bronzes containing 18%-33% tin changed from gold-like to silver-like as the tin content. What Is Copper Alloy? Copper alloy (copper alloy) is an alloy formed by adding one or more other elements to pure copper as the matrix. The two primary copper alloys are brass and bronze. Copper was the base material due to its ability to function as. In this review, several typical copper alloys, such as Cu-Fe-P, Cu-Ni-Si, and Cu-Cr-Zr are analyzed. 5 and 1. Sometimes called cupronickels, there exists a range of different copper-nickel alloys possessing different properties and useful in a range of different applications. A new alloy was needed to fulfil these conditions and Rocketdyne developed a copper alloy based on their previous work with NARloy-A, a cast Cu-3. Alloys were placed in cast iron molds that had been pre-heated to approx. III. They have high resistance against corrosion. Copper zinc alloys are single phase up to about 37% zinc in the wrought condition. Foundries supply castings. 2023 by Aileen Sammler, Dr. The use of BeCu for connectors began in the 1940's and was limited to military and telecommunication applications. The corrosion resistance of chromium copper alloys is better than that of pure copper because chromium improves the chemical properties of the protective oxide film. The charge on the inner conductor is uniformly-distributed with density. 4. Powder Type. The microstructure of the single phase brass alloys, with up to 32% zinc, consists of a solid solution of zinc and alpha copper. Form. Therefore, they are widely used in the chemical, oil, and marine industries for manufacturing of various components of equipment, such as: drill collars, pumps, valves, impellers, fixtures, pipes,. Copper alloys are used for conductive spring clips, terminals and connectors. 2 Fracture Toughness 673 4. People need copper in their diets. They are available in the form of bar, rod and plate. Thick copper-covered steel wires exhibited a highly favorable tradeoff between the strength and electric conductivity as compared with the beryllium copper alloys. Get the best deals on Industrial Metal & Alloy Spheres when you shop the largest online selection at eBay. The copper most commonly used for sheet and strip applications complies with ASTM B370. Aluminum bronze alloys typically contain 9-12% aluminum and up to 6% iron and nickel. Brown or black can be used as a base color for copper patina. Activity of Copper in its Alloys with Gold and the Entropy of Cuprous Oxide,” Compt. Castro has suggested that knowing the alloy composition of mariner's astrolabes could be used, along with other characteristics, to guess their geographic origin (Castro et al. coli was. 4. The focus of this work was to investigate. 6 to 2. In the designation system, numbers from C10000 through C79999 denote wrought alloys. 21% during the forecast period. 1: Copper-Base Alloy - C27000 (Yellow brass) 11. promovendo uma caracteristica de deslizamento da esfera, reduzindo o coeficiente de atrito entre a esfera e a. com. 2024 aluminum alloy is of the 2xxx series, which include alloys that use copper as their principal alloying component. HIGH-STRENGTH WROUGHT COPPER- BERYLLIUM ALLOYS (ALLOYS 25, M25 AND 165) Age hardening temperatures for high-strength wrought cop-per beryllium vary from 500°F (260°C) to 700°F (370°C). 025 mm/y) or less, and for the copper-nickel alloys on the order of 0. C19400), copper-zinc alloy that is commercial bronze (Copper Alloy UNS No. Copper Tin Alloy Properties. Joining. . The first material to. g. This technique involves using a brazing filler metal to join two pieces of copper or copper alloys together. 01–0. As the PCA biplot on the ICP-OES quantitative data shows (Fig. Additionally, the antimicrobial properties of solid copper alloy surfaces against. 5 mm x 20 mm x 20 mm were cut out. , 2. 2 INCH COPPER HALF BALLS - HEMISPHERE- 110 ALLOY (25 PACK). 7 introduces another new DM: hydriding of titanium alloys. The common cold-rolled temper names and designations are: Annealed. Higher tensile strength and hardness can only be obtained when the alloys are cold worked. Alpha–beta aluminum bronzes are heat treatable. Thus, 95% of the energy and 95% of the environmental emissions are. Flared fittings for use with flared copper tube for cold water applications with a maximum water pressure of 175 psig are manufactured to the requirements of ANSI/ASME B16. Brass is an alloy made of copper and zinc. 02mm/yr decreasing with time as the protective surface films mature . Additional information is available upon request. From: Encyclopedia of Materials: Science and Technology, 2001. Each record. 1 M, 0. High purity copper is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. 1. Laser cladding has been used to improve the surface properties of copper and copper alloys for many years. The Copper Development Association Inc. This specification establishes the requirements for sheets and strips of various thicknesses produced from copper (Copper UNS No. In 303 alloy, the chromium content is reduced to 17%, and 1% of the alloy is sulfur. The Copper Mariner. In several clinical studies, copper has been evaluated for use on touch surfaces, such as door handles, bathroom fixtures, or bed. Granular copper powder can be produced by a number of methods, the most important being atomization, electrolysis, hydrometallurgy and solid state reduction. Powder Size Chart. % Cu) completely annihilated E. Copper and copper alloys are one of the major groups of commercial metals. Copper beryllium alloys are used for their high strength and good electrical and thermal conductivities. Copper-nickel Alloy. These affect copper alloys and are all related to the leaching out of alloy constituents (the alloys are obvious as they appear in the DM title). Within these two categories, the compositions are grouped into the following families of coppers and copper alloys: Coppers. 3% and 96%. In order to systematize this colorful collection and provide a basis for specification, the National Association of Architectural Metal Manufacturers (NAAMM) and the National Ornamental & Miscellaneous Metals. For copper alloys immersed in sea water, the general corrosion rate is usually less than 0. It has 38% copper, 17. There are more than 400 copper alloys, each with a unique combination of properties to suit many applications, manufacturing processes and environments. Modulus of Elasticity in Tension ksi. This occurs when the surface of the metal is exposed to oxygen in an acidic environment. The most common stainless steel is 304 alloy. Pockets of air make it lighter in weight than rubber; good for packing, insulating, and sealing. +++ 442 day test at Kure Beach, North Carolina. 4989. Cast Copper Alloy Threaded Fittings: Classes 125 and 250 ISBN: 9780791833834 - Pag:40 This Standard covers cast Class 125 and 250 copper alloy threaded pipe fittings with provisions for substituting wrought copper alloys for plugs, bushings, caps, and couplings in small sized sizes. The effect of aging processes on the tensile properties of C-18150 copper alloy samples, made by laser powder-bed-fusion additive manufacturing (AM) process with three different fabrication orientations (horizontal, angled, and vertical to the build direction), are investigated. 3kg of gold. The choice of these current alloys is related to the studies. As solid solution alloys, the 90-10 and 70-30 alloys cannot be age hardened. In the designation system, numbers from C10000 through C79999 denote wrought alloys. It offers 100% IACS minimum conductivity, making it popular for electrical applications and those necessitating low resistance levels. Copper is a major metal and an essential element used by man. Fig. The high-copper alloy family includes, in wrought forms, cadmium coppers (C16200 and C16500), beryllium coppers (C17000-C17500), chromium coppers (C18100-C18400), zirconium copper (C15000), chromium-zirconium copper (C14500) and combinations of these and other elements. Copper alloys are known for their excellent corrosion resistance, but it is not entirely immune to corrosion. In the designation system, numbers from C10000 through C79999 denote wrought alloys. 5. Environmental Protection Agency as the first solid antimicrobial material. Because of the addition of the sulfur, 303 alloy has improved machinability compared to 304 alloy. Western Reserve Manufacturing Co. Cast alloys are numbered from C80000 through C99999. Common Alloys . Alloying produces a metal harder than either copper or zinc individually. Covers production, consolidation, strengthening, copper in iron and steel P/M parts, and non-structural applications. Aluminum constituted nearly 40% of industrial metal production in 2022. Standards: ASTM B-66, ASTM B-271, ASTM B-505, ASTM B-584, SAE 461, SAE J461, SAE J462, SAE660, DIN 2. 4% P are wrought alloys known as phosphor bronzes. Consequently it is very easy to work out how much you will get for either of these units. 8: Copper-Base Alloy - C22000 (Commercial bronze, 90%) 10. All copper beryllium alloys are readily machinable using conventional processes and the guidelines provided in this brochure. Copper Alloys Search - Basic. These property models are needed to simulate the mechanical behavior of structures with copper components. A Reference Material is defined as:Copper Alloys. Copper Alloys. 3 Creep 674 4. Copper alloys are made of a copper matrix and a combination of single alloying elements in n-ary forms. Initially used for gun making, this type of brass is also used for hydraulic and steam castings, gears, and pipes. Copper alloy surfaces have intrinsic properties to destroy a wide range of microorganisms. The alloy elements are added to copper with the purpose to improve its resistance, ductility and thermal stability, without causing considerable damages on its form, electric and thermal conductivity and resistance to the corrosion, typical characteristic aspects of pure copper. From:Building Decorative Materials, 2011 Related terms:. 5Ag (wt-%) alloy, by adding Zr to a ratio of Cu–3Ag–0. Below is a breakdown of the copper grade numbering system to help you understand copper alloys and the characteristics of each series. This Standard includes: (a) pressure-temperature ratings Publisher Summary. Production and forming methods may affect alloy selection. The CuCrZr alloy plate (40 mm thick) was in hot rolled condition. In both media, migrations are higher for lead than for other metals. Copper alloys There is a large number of copper alloys, with zinc (brass) and tin (bronze) being the most common. It has good reflectivity but lacks the refinement of an applied mechanical surface. C100 – series with Copper contains. The most common base metals are copper, lead, nickel, tin, aluminum, and zinc. Electronic products Copper’s supreme electrical conductivity properties and abundance as a raw material make it the most efficient and cost-effective metal for electronic products. The copper alloys had initial releases of copper on the order of 100 to 200 µg cm −2 d −1, while the treated nylon net initially released about 10 µg cm −2 d −1. 08 in (2 mm) thick were applied. The graphite particle–matrix interface did not show any enhanced susceptibility to corrosion. However, the brazing process can be. impure copper, binary tin-bronze, brass and quaternary alloys. PerforMet alloy is a nickel-silicide-strength - ened bronze that withstands high pressures and temperatures. Alloying can increase or reduce the strength, hardness, electrical and thermal conductivity, corrosion resistance, or change the color of a metal. 8 –Ni 2 –Mn 0. However, the amount of copper may range from 55% to 95% by weight, with the amount of zinc varying from 5% to 45%. 4% Cu, 1. 2 INCH COPPER HALF BALLS - HEMISPHERE- 110 ALLOY (25 PACK). Copper is a ductile and malleable base metal that is valued for its high thermal and electrical conductivity. International Annealed Copper Standard: 100% give 5. 26 - Cast Copper Alloy Fittings for Flared Copper Tubes. The strongest composite we offer; comparable in strength to 6061 aluminum but lighter in weight. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. Copper and Copper Alloys Published: May 2014 Includes standards on copper and copper alloy plate, sheet, strip, rolled bar, rod bar, and shapes. Copper zinc alloys are single phase up to about 37% zinc in the wrought condition. Both the high strength and the high conductivity Performance Alloys copper beryllium alloys are available in several wrought forms (e. Copper’s superior conductivity allows smaller conductors to be used, saving. 001 mm/y). They have high resistance against corrosion. It contains 18% chromium and 8% nickel. Copper and its relevant species, such as oxides and many alloys, have been recognised as potential antibacterial surfaces. Updated on August 21, 2020. A category is therefore a general description of an alloy group e. 2. Figure 3. 17%. The C19210 (F) alloy presents a low resistance in comparison with the other copper alloys used. The most popular form of pure copper is the standard electrical wire grade of copper (C11000) contains 99. A freshly exposed surface of pure copper has a pinkish-orange color. Arsenical copper Beryllium copper (beryllium) Billon (silver) Brass (zinc) Calamine brass (zinc) Chinese silver (zinc) Dutch metal (zinc) Gilding metal (zinc) Muntz metal (zinc) Pinchbeck (zinc) Prince's metal (zinc) Tombac (zinc) In general, copper alloy shows weight loss, whereas copper-alloy graphite composites show weight gain when subjected to 17-day Australian test solution (according to the Standards Association of Australia Code of Practice C316-1970). Moreover, as presented in thisThis is a list of named alloys grouped alphabetically by base metal. S. Anti-Bacterial – copper compounds have been used as bacteriostatic agents and fungicides, as well as wood preservatives. Copper Alloy Supplier Database is originally derived from CDA's Standards Handbook Part 5 - Sources and CABSA. Brass: 3-45% Zn by weight, it's used in musical instruments, valves, and hardware. Copper production from recycling copper and copper alloy end-of-life objects (old scrap) amounts to 15%–20% of the above. From 1982 through today, pennies are 97. whole length and with a uniform wall thickness. CEN European Numbering System for copper and copper alloys, showing the preferred number ranges and letters allocated to the different material groups. Tin bronzes are stronger and more ductile than red and semi red brasses. 3). The as-received copper alloys were processed by solution treatment, water quenching, cold-drawing and ageing treatment successively. 8) and a brass (HB: Cu–Al 4 –Zn 25 –Fe 3 –Mn 3. % Cr and 4 at. 5% copper (SAC305) was initially endorsed for use in SMT assembly, along with a number of other SAC alloys. Bronze is an alloy mostly containing copper and tin, sometimes with added zinc or lead, and it's harder, stronger, and more resistant to corrosion than pure copper. 1069 Stinson Drive Reading, PA 19605. The wide variety of textures and colors available with copper alloys provide architects with an almost limitless palette of visual effects. In fact, copper is used for these purposes more often than any other metal. Alloys without iron, are annealed in the temperature range of 595–650 °C. Copper square bars are available in 12 or 72 in. Hiduminium or R. The most popular form of pure copper is the standard electrical wire grade of copper (C11000) contains 99. 2. coli O157 on copper-based alloys surface at 20 and 4 °C, respectively. Rhodium plated on silver-plated copper: 0. Tube drawing has been successfully demonstrated with tubes as small as 0. Corrosion resistant Cu-Ni alloys contain around 30% Ni along with a little bit of Fe and Mn which makes them especially stable in saltwater. 3 –Fe 3. 1/8″ – 9″ diameter. In fact, copper is used for these purposes more often than any other metal. Brasses (C 20500 - C 28580) are basically copper-zinc alloys and are the most widely used group of copper alloys. 13mm – 70mm A/F. Green for copper and its alloys. A team led by controversial physicist Avi Loeb is combing the ocean floor off the coast of Papua New Guinea for remnants of two meteors that they believe could actually be alien tech. Copper zinc alloys are single phase up to about 37% zinc in the wrought condition. The ultimate tensile strength can exceed 200 ksi, while the hardness approaches Rockwell C45. Copper itself is essential for the full wiring harness, alternator and starter motor windings and other motors and actuators. S. Alloy C18000, another member of the group, contains nickel,. Copper Alloys as Determined by Ishiwara. In both media, migrations are higher for lead than for other metals. Fig. For ETP copper properties, this alloy is extremely versatile and is the most commonly used copper alloy. 6 Recycle of copper and copper alloy scrap. 025 mm/y); for copper-nickel, the most resistant alloys approach 0. products made from Antimicrobial Copper Alloys - Group I under EPA Registration Number 82012-1. 9% of the following bacteria within 2 hours of. NARloy-Z (Cu-3 wt. A typical example is 60-40 yellow brass, designated as C85500. Copper is reddish colored and takes a bright metallic luster. ; High Strength Copper Nickel – Optimisation of Mechanical Strength and Marine Corrosion Resistance for Use in Naval Architecture and.