Industrial Rolled. High Performance CuSn2Fe. Characteristics

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1 Page 1 Alloy Designation Hig Performance CuSn2Fe EN DIN CEN/TS UNS Cemical Composition Weigt percentage Cu Remainder % Sn % Fe % P % Tis alloy is in accordance wit RoHS 22/96/CE for electric & electronic equipments and 22/53/CE for automotive industry. Main Applications We ave developed a wide range of ig performance alloys wit excellent properties regarding conductivity, strengt, corrosion beaviour, bend ability and relaxation properties. KME alloys are te first coice materials for ig-end applications and products. Caracteristics CuSn2Fe,1P is a low alloyed tin bronze wit coerent precipitates. Te lower tin content leads to a very good electrical conductivity of at least 3% IACS combined wit ig strengt. Precipitates of iron and posporus stabilize te formability, conductivity, strengt and stress relaxation resistance to be used for automotive applications at relatively ig ambient temperatures. Arcitecture: Bridge Bearing Plates. Electrical: Miniaturized Connectors, Contact Springs, Relais Springs, Terminals, Switc Parts Fuse Clips, Electronic Connectors. Fasteners: Lock Wasers, Fasteners. Industrial: Bellows, Textile Macinery, Perforated Seets, Springs, Sleeve Busing, Clutc Disks, Beater Bar, Cemical Hardware General: Stamped parts, Connectors, Contact springs, Spring elements, Ultra ig strengt spring elements, Membranes, Switc elements, Fixed contacts. Preferred Applications Spring Contact Pin Contact Fuse; Relay Box; Punsed Screen Switces; Relays Low Temperature 13 C Current Carrying Capacity x x x x x = well suited xx = particularly well suited Pysical Properties Typical values in annealed temper at 2 C Density 8.9 g/cm³ Termal expansion coefficient C C /K 1-6 /K Specific eat capacity.38 J/(g K) Termal conductivity 14 W/(m K) Electrical conductivity (1 MS/m = 1 m/(ω ²) 22 MS/m Electrical conductivity (IACS) 38 % Termal coefficient of electrical resistance (.. 1 C) 1-3 /K Modulus of elasticity ( 1 GPa = 1 kn/²) cold formed annealed 121 GPa GPa

2 Mecanical Properties (EN 1652) Temper Tensile Strengt Rm Yield Strengt Minimum Rp.2 Elongation Minimum A 5 Hardness HV * MPa MPa % HV R39 H2 (1/2 Hard) R51 H4 (Hard) R55 H5 (Spec. Hard) R6 H6 (Extra Hard) *only for information ** additional effort in production Electrical Conductivity E. Conductivity [MS/m] H2 H4 H5 H6 Temper Electrical conductivity is strongly influenced by cemical composition. A ig level of cold deformation and small grain size decrease te electrical conductivity moderately. Minimum conductivity level can be specified. Fabrication Properties* Cold Forming Properties Hot Forming Properties at C Macinability (Rating 2) Electroplating Properties Hot Tinning Properties Soft soldering, Brazing Resistance Welding Gas Sielded Arc Welding Laser Welding Excellent Limited Less suitable Excellent Excellent Excellent Good Good Good Soft Annealing C Stress Relieving Annealing C * For more details call our tecnical service Corrosion Resistance* Resistant to: as a good resistance to seawater, different agents and industrial atmospere. It is in a large extend resistant to pitting corrosion. Even in seawater te laminar attack is iger tan localized corrosion. Largely insensitive to stress corrosion cracking * For more details call our tecnical service Page 2

3 Page 3 Bending Properties :.5 rel. 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 wit 1 wide samples. Smaller samples in general as well as lower tickness allow a lower bending radius witout cracks. If needed we supply bending optimized temper classes tat far exceed standard quality. Please take care wen comparing wit ASTM E 29 results, tere te bend definition direction is contradictory. Bending Definition H 2 H 4 H 5 H6 Transverse = good way Parallel = bad way rel. Bending Radius R/T bending edge transvers to rolling direction bending edge in rolling direction 18 Bending 18 Parallel 9 Parallel 9 Transverse 18 Transverse Minimum Bending Radius Calculation H 2 H 4 H 5 H6 To find out te minimum possible bending radius take te R/T value from te list. Example: R/T =.5 and tickness.3 Minimum radius = (R/T) x tickness =.5 x.3 =.15 Bending Properties* Temper Bending 9 Bending 18 Transvers Parallel Trans -vers Parallel R/T R/T R/T R/T H 2.5 H H H * Measured at sample widt 1 according to EN 1654 Possible bending radius = (R/T) x tickness

4 Sanitary and Antimicrobial Properties Marc Solioz. University of Bern Copper as been recognised as a ygienic material since te dawn of civilisation and, in te last two centuries, te anecdotal evidence as been supported by scientific researc sowing tat copper is antimicrobial, i.e. it inibits te growt of armful patogens - bacteria, moulds, algae, fungi and viruses. Due to its ig copper content of about 98% CuSn2Fe,1P provides te full antimicrobial properties of copper to inibit te growt of bacteria, viruses and fungi wic are in contact for a sort period of time on copper containing surfaces. Copper surfaces ave sanitizing properties and self-sanitizing activity tat make it attractive for ygienic and sanitary use e.g. in ospitals, nursing omes and oter ealtcare facilities or public buildings. Te effect as been verified in recent scientific studies on a range of disease-causing organisms including MRSA, Clostridium difficile, E.coli, Listeria monocytogenes, Influenza A (H1N1) and Aspergillus niger. Picture: Copper coin (Iris penny) on an agar plate wit cells of E. coli bacteria For more details please contact our tecnical service Softening Resistance Vickers Hardness HV under construction R36 at 3 C R29 at 5 C After sort time eat treatment Vickers Hardness is measured. Te diagram sows typical values Time [s] Bend Fatigue (at room temperature) Te fatigue strengt gives an indication about te resistance to variations in applied tension. It is measured under syetrical alternating load. Te maximum bending load for 1 7 load cycles witout crack is measured. Dependent on te temper class it is approximately 1/3 of te tensile strengt R m. Page 4

5 Relaxation Properties Termal stress relieved Remaining Stress [%] Remaining Stress [%] Remaining Stress [%] Remaining Stress [%] R53 1 C R53 15 C 1 R53 2 C P kt (XY) Time [] R58 1 C R C 1 R58 15 C P kt (XY) Time [] R53 1 C R53 15 C R53 2 C Time [] R58 1 C R C R58 15 C R58 2 C P kt (XY) Time [] Initial Stress: 5% of Rp.2 Parallel Rolling Direction Initial Stress: 5% of Rp.2 Transverse Rolling Direction Initial Stress: 8% of Rp.2 Parallel Rolling Direction Initial Stress: 8% of Rp.2 Transverse Rolling Direction Stress relaxation is tested wit cantilever bending test equipment. Tis metod is taking sort time relaxation into account. so tat te values acieved are very realistic, wile oter test metods like tube test pretend better properties from te acieved 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. te beaviour of deformed parts may differ. neverteless te ratio between te different tempers remains te same. Typical test sample tickness is.3.6. Page 5

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

7 Page 7 Formats Dimension* Coil Strip tickness (oter ticknesses on request) Strip widt Outside diameter Weigt (Standard) Weigt (Deep-Drawing Quality) Weigt per Traverse wound strip Weigt Drums: wood, plastic, metal, flangeless TECSTRIP _multicoil Inner diameter 3 for tickness Inner diameter 4 for tickness Maximum weigt Outer diameter maximum Seet 6.35 Lengt Weigt Seet > 6.35 Lengt Weigt Plate Lengt Weigt Disc Diameter Weigt * Some combinations migt not be possible

8 Page 8 Surface coatings & Special Treatments * Dimension Hot-Dip tinned and STOL 28M Tin-Silver STOL 13 Termic Sn Tin Layer µm Different tickness per side possible Electroplating Tin, Silver, Gold, Cu-Flas, Ni-Flas, Selective plating Oter coatings on request Profiled strips STOL Multigauge Oter widt on request Surface wit extra low residual carbon content possible. Protection wit oil or adesive foil on request * Furter details you find at Standards for copper and copper alloys EN 1652 EN 1654 EN 1758 EN EN EN Plate, seet, strip and circles for general purposes Strip for springs and connectors Strip for lead frames Hot-dip tinned strip Copper plate, seet and strip for electrical purposes Electrolytically tinned strip

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