C51900 Phosphor Bronze

C51900 Details & Applications: C51900 Phosphor Bronze CuSn6 - UNS.C51900 Phosphor Bronze Alloys, which is a 6% tin bronze distinguished by a very good combination of strength and electrical conductivity. It is used for connector and current-carrying springs in contacts. Among the 4-8% tin bronze C51900 exhibits a high electrical conductivity, the highest reachable strength is significantly higher than C51100 and C51000. By means of an additional further tempering after the cold forming process the bendability can be further improved. Its adequate conductivity makes it particularly interesting for springy conductive components. It is wear-resistant, has very good corrosion resistance and can be readily soldered. Due to the higher strength and springiness and good workability, C51900 is used for all types of springs as well as for flexible metal hoses. In addition, it is applied in the paper, pulp, textile and chemical industries, as well as in shipbuilding, mechanical engineering and process equipment manufacture. Typical Application for C51900 Phosphor Bronze Alloys Electrical: Stamped Parts,springs, Components of Electrical Engineering, Terminals,Contacts, Switch Parts, Electromechanical Spring Components, Resistance Wire, Electrical Flexing Contact Blades, Electrical Connectors, Electronic Connectors, Wire Brushes, Electronic and Precision Instrument Parts, Fuse Clips, Terminal Brackets, Kettles, Pots, Perforated sheets, Textile Machinery parts Fasteners: Fasteners Industrial: Bellows, Textile Machinery, Perforated Sheets, Chemical Hardware, Truss Wire, Mechanical Springs, Sleeve Bushings, Diaphragms, Clutch Disks, Bourdon Tubes, Beater Bar, Welding Rods, Pressure Responsive Elements, Sprinkler Parts, Automotive Parts Available Sizes: Custom Diameter & Sizes, Random Mill lengths Available Products (forms): Round bars, Flat bars, Square bars, Round Wires, Round Strips Custom shapes are available upon request. Chemical Composition: Sn: 5.50-7.00% P:  0.03-0.35% Zn: 0.30% Max. Fe: 0.10% Max. Pb: 0.05% Max. Zn: Balance Note: Copper plus additions equal 99.50% minimum. Typical Physical Properties: Specific Gravity: 8.80 g/cm3 Coefficient of Thermal Expansion per °C: 18.50 x 10-6 (20-300°C) Electrical Conductivity (% IACS): 15.50 % @ 68 F Thermal Conductivity: 38.00 Btu · ft/(hr · ft2·oF)at 68F Modulus of Elasticity in tension: 16000 ksi Note: 1). the units are based upon US Customary. 2). the typical physical properties apply to age hardened products. International Specification: Rods/Bars/Strips: UNS.C51900, CDA519, ASTM B139, B103, B888, B159 European Standards: CuSn6, JIS C5191, CW 452 K, PB 103 Note: ASTM: American Society for Testing and Materials RWMA: Resistance Welder Manufacturers' Association Note: Unless otherwise specified, material will be produced to DIN & RWMA. Mechanical Properties: The detailed Mechanical Properties will be available on request from customers.