C26000 CuZn30 Industrial Rolled

Transcription

1 Alloy Designation EN DIN CEN/TS (2.265) CW55A JIS C 26 BS CZ 16 UNS C26 (Cartridge brass, 7%) Brass Rolled Products KME offers a wide range of brass rolled products in the form of strips, sheets and discs in order to meet our customer s needs for industrial manufacturing or for the production of gift articles and decorative objects. Chemical Composition percentage Cu 7 % Zn Rest % This alloy is in accordance with RoHS 22/96/CE for electric & electronic equipments and 22/53/CE for automotive industry Characteristics, as well as CuZn28 and CuZn33 is combining excellent cold forming properties with good mechanical strength. has good hot forming properties and excellent soldering and brazing properties. Due to the outstanding deep drawing properties and the other two mentioned alloys are called deep-draw or cartridge brass. We produce qualities with grain sizes below 5 µm if needed. Main Applications Architecture Grillwork Automotive Odometer Contacts, Heater Cores, Thermostats, Electrical Connectors, Radiator Cores, Radiator Tube, Radiator Tanks, Tanks Builders Hardware ocks, Push Plates, Finish Hardware, Kick Plates, Decorative Hardware, Door Knobs, Hinges Consumer Snaps, Planters, Fireplace Screens, Etched Articles, Bird Cages, Coinage, Chain inks, Pen/Pencil Inserts and Clips, Syringe Parts, Watch Parts, Costume Jewelry, Buttons, Shells - Electrical Sockets, amps Electrical Terminal Connectors, Flashlight Shells, amp Fixtures, Reflectors, Screw Shells Fasteners Pins, Rivets, Fasteners, Groets, Eyelets, Screws Industrial Air Pressure Conveyer Systems, Sound Proofing Equipment, Springs, Chain, Bead Chain, Tubing for Instruments and Machines, Heat Exchangers, Pump Cylinders, Wire Screens, Pumps, iners, Power Cylinders Ordnance Aunition Cartridge Cases, Mechanical Housings for ighters, Shells - Mechanical Housings for Aunition, Aunition Other Stencils, Washers Plumbing Fittings, Bathroom Fixtures, Plumbing Accessories, Faucet Escutcheons, Traps, Plumbing Brass Goods Preferred Applications Jewellery and Metall Goods Deep Drawn Parts x = well suited xx = particularly well suited Physical Properties Typical values in annealed temper at 2 C Density 8.5 g/cm³ Thermal expansion coefficient C C Components for the Electrical Industry Stamped Parts xx xx xx xx xx Connectors /K 1-6 /K Specific heat capacity.377 J/(g K) Thermal conductivity 126 W/(m K) Electrical conductivity (1 MS/m = 1 m/(ω ²) 16 MS/m Electrical conductivity (IACS) 27.6 % Thermal coefficient of electrical resistance (.. 1 C) /K Modulus of elasticity ( 1 GPa = 1 kn/²) cold formed annealed GPa GPa Page 1

2 Mechanical Properties (EN 1652) R27 G1 Annealed G2 Annealed G3 Annealed G5 Annealed Tensile Strength Rm Yield Strength Rp.2 * Elongation Minimum A 5 Grain Size Hardness MPa MPa % µm HV R R R R R HV * * only for information Electrical Conductivity 18 E. Conductivity [MS/m] Electrical conductivity is strongly influenced by chemical composition. A high level of cold deformation and small grain size decrease the electrical conductivity moderately. Minimum conductivity level can be specified Fabrication Properties* Cold Forming Properties Max. 9% between annealings Hot Forming Properties at C Machinability (Rating 3) Electroplating Properties Hot Tinning Properties Soft Soldering, Brazing Resistance Welding Gas Shielded Arc Welding aser Welding R27 R35 R41 R48 R55 R63 Good ess suitable Good Fair ess Suitable Soft Annealing C Corrosion Resistance* Resistant to: ha s a good resistance to water, water vapour, different saline solutions, many organic liquids. Industrial-, maritime- and country air. CuSn3 in cold formed temper, as well as under internal and external tension, tends to stress corrosion cracking, when in contact with e.g. hydrous aonia, aoniac salt or amine and others. Trough a heat-treatment of semi-finished or finished products the risk of stress corrosion can be reduced. Not resistant to: Acids, hydrous sulphur components. * For more details call our technical service Stress Relieving Annealing C * For more details call our technical service Page 2

3 Bending Properties :.5 relative Bending Radius R/T bending edge transvers to rolling direction bending edge in rolling direction 9 Bending Bending test according to EN ISO 7438 is done with 1 wide samples. Smaller samples in general as well as lower thickness allow a lower bending radius without cracks. If needed we supply bending optimized temper classes that far exceed standard quality. Please take care when comparing with ASTM E 29 results, there the bend definition direction is contradictory. Bending Definition R27 R35 R41 R48 R55 R63 Transverse = good way Parallel = bad way relative Bending Radius R/T bending edge transvers to rolling direction bending edge in rolling direction 18 Bending R27 R35 R41 R48 R55 R63 Bending Properties* Bending 9 Bending 18 Parallel Transvers Transvers Parallel R/T R/T R/T R/T R27.5 R35.5 R R R Parallel 9 Parallel 9 Transverse 18 Transverse Minimum Bending Radius Calculation To find out the minimum possible bending radius take the R/T value from the list. Example: R/T =.5 and thickness.3 Minimum radius = (R/T) x thickness =.5 x.3 =.15 R * Measured at sample width 1 according to EN 1654 Possible bending radius = (R/T) x thickness Page 3

4 Relaxation Properties Thermal stress relieved Remaining Stress [%] Remaining Stress [%] R65 1 C R65 15 C Initial Stress: 5% of Rp.2 Parallel Rolling Direction Time [h] Stress relaxation is tested with cantilever bending test equipment. This method is taking short time relaxation into account. so that the values achieved are very realistic, while other test methods like tube test pretend better properties from the achieved values. Relaxation values give an indication about stress relieve of strip under tension for a certain time and temperature. As it is measured on plain strip. the behaviour of deformed parts may differ. nevertheless the ratio between the different tempers remains the same. Typical test sample thickness is R65 1 C R65 15 C Initial Stress: 5% of Rp.2 Parallel Rolling Direction Time [h] Bend Fatigue (at room temperature) The fatigue strength gives an indication about the resistance to variations in applied tension. It is measured under syetrical alternating load. The maximum bending load for 1 7 load cycles without crack is measured. Dependent on the temper class it is approximately 1/3 of the tensile strength R m. Page 4

5 Camber Customized Tolerances Evenness Rolling direction Our products are produced in accordance with relevant norms EN 1652 / EN Customer specific tolerances for,, Camber, Transverse Flatness, Evenness, Twist and Coil set can be defined. We will be happy to meet your demands. EN 1652 defines only camber. Tolerance [] EN [] KME Standard [] KME Precision [] Coil set Twist ±.18 ±.5 ± ±.22 ±.7 ±.5 Rolling direction angle ±.25 ±.15 ± ±.3 ±.15 ± ±.4 ±.17 ± ±.4 ±.2 ± ±.4 ±.22 ±.12 h h Transverse Flatness ±.5 ±.25 ± ±.6 ±.3 ± ±.7 ±.45 ± ±.1 ±.5 ± ±.12 ±.6 ±.3 h Evenness Tolerance [] [] Roughness Ra [µm] [] On request > 2. Tolerance Standard / Precision [] [] / / / / / / / / / / / / / / / / / / / / / / / / / - Page 5

6 Formats Dimension* Coil Strip thickness (other thicknesses on request) Strip width Outside diameter (Standard) (Deep-Drawing Quality) per , 1,4 8,4 8, 12. Traverse wound strip Drums: wood, plastic, metal, flangeless ,5 TECSTRIP _multicoil Inner diameter 3 for thickness Inner diameter 4 for thickness Maximum weight Outer diameter maximum , 1,6 Sheet 6.35 ength Sheets in standard dimensions e.g. 1, x 2, on stock , 2.. 6,5 2,8.. 8, Sheet > 6.35 ength Sheets in standard dimensions e.g. 1, x 2, , 2.. 7,5 1, Plate ength , 15, 8, Disc Diameter , 1, * Some combinations might not be possible Page 6

7 Surface coatings & Special Treatments * Dimension Hot-Dip tinned and STO 28M Tin-Silver STO 13 Thermic Sn Tin ayer µm Different thickness per side possible R36 on request Electroplating Tin, Silver, Gold, Cu-Flash, Ni-Flash, Selective plating Other coatings on request Profiled strips STO Multigauge Other width on request Bright and polished appearance GS1 Surface Quality Skin passed material, meaning it has been 1, 1.5 Surface with extra low residual carbon content possible. Protection with oil or adhesive foil on request * Further details you find at Standards for copper and copper alloys EN 1652 EN 1654 EN 1758 Plate, sheet, strip and circles for general purposes Strip for springs and connectors Strip for lead frames EN Hot-dip tinned strip EN Copper plate, sheet and strip for electrical purposes EN Electrolytically tinned strip Page 7 _11_218