Wieland-K32® Rolled Products E-Cu58 C11000 Material Designation Chemical Composition (Reference) Typical Applications EN Cu-ETP Cu ≥ 99.90 % UNS* C11000 O 0.005–0.040 % · Main material for general electrical applications · Stamped parts · Transformer coils · Cable strip · Heat sinks * Unified Numbering System (USA) Physical Properties* Electrical Conductivity*** Fabrication Properties Corrosion Resistance Resistant to: industrial atmosphere (formation of dark resp. green protective layers), industrial and drinking water (max. flow rate approx. 1.5 to 2 m/s), pure water vapour, non oxidizing acids, alkalis (except for ammonia and cyanide-containing compounds), neutral saline solutions. MS/m %IACS 58 100 Capacity for Being Cold Worked excellent Thermal Conductivity W/(m·K) 390 Machinability less suitable Capacity for Being Electroplated excellent Capacity for Being Hot-Dip Tinned excellent Soft Soldering excellent Resistance Welding less suitable Gas Shielded Arc Welding* less suitable Laser Welding less suitable Coefficient of Electrical Resistance** 10-3/K 3.7 Coefficient of Thermal Expansion** 10-6/K 17.7 Density 8.94 g/cm3 Modulus of Elasticity GPa Specific Heat 127 0.386 J/(g·K) Poisson’s Ratio 0.34 * Reference values at room temperature ** Between 0 and 300 °C *** Minimum value in soft temper Not resistant to: oxidizing acids, hydrous ammonia and halogenated gases, hydrogen sulfide, seawater, especially with high flow rates. * During heating in reducing atmosphere hydrogen embrittlement occurs Mechanical Properties K32 R220 R240 61 R290 R360 Tensile Strength Rm MPa 220–260 240–300 60 290–360 ≥ 360 Yield Strength Rp0.2 MPa ≤ 140 ≥ 180 59 ≥ 250 ≥ 320 Elongation A50mm % ≥ 33 ≥ 858 ≥4 ≥2 H090 H110 Temper 55 65–95 45–65 El. Conductivity (MS/m) 61 60 59 58 57 56 55 R220 H040 R240 H065 Temper 0° K32 6 R220 H040 90–110 R240 H065 ≥ 110 Temper R290 H090 R360 H110 Bendability (Strip Thickness t ≤K32 0.5 mm) K32 R290 H090 R360 H110 Rel. Bending Radius r/t 90° Electrical Conductivity 57 56 H065 H040 Hardness HV El. Conductivity (MS/m) Temper 6 5 4 3 bending edge –I rolling direction bending edge II rolling direction 2 1 0 R220 H040 R240 H065 Temper R290 H090 R360 H110 Wieland-K32® E-Cu58 C11000 K32 to Softening Resistance 140 120 100 Vickers Hardness HV Vickers hardness after heat treatment (typical values) Temper R360 200 °C 300 °C 400 °C 80 60 40 20 0 10 20 30 40 Time (min) 50 60 K32 (wh) Thermal Stress Relaxation Stress remaining after thermal relaxation as a function of Larson-Miller parameter (F. R. Larson, J. Miller, Trans ASME74 (1952) 765–775) given by: P = (20 + log(t))*(T + 273)*0.001. Time t in hours, temperature T in °C. Example: P = 9 is equivalent to 1.000 h/118 °C. Measured on rolled to temper specimens parallel to rolling direction. Total stress relaxation depends on the applied stress level. Furthermore, it is increased to some extent by cold deformation. 100 Residual Stress (%) 90 80 70 60 50 40 Temper R240, R290, R360 7.0 8.0 9.0 10.0 Larson-Miller parameter P 11.0 Fatigue Strength The fatigue strength is defined as the maximum bending stress amplitude which a material withstands for 107 load cycles under symmetrical alternate load without breaking. It is dependent on the temper tested and is about 1/3 of the tensile strength Rm. · Standard coils with outside diameters up to 1400 mm · Traverse-wound coils with drum weights up to 1.5 t Wieland-Werke AG Dimensions Available · Hot-dip tinned strip · Contour-milled strip www.wieland.com Graf-Arco-Str. 36, 89079 Ulm, Germany, Phone +49 731 944 2030, Fax +49 731 944 4257, [email protected] This printed matter is not subject to revision. No claims can be derived from it unless there is evidence of intent or gross negligence. The product characteristics are not guaranteed and do not replace our experts’ advice. · Strip thickness from 0.10 mm, thinner gauges on request · Strip width from 3 mm, however min. 10 x strip thickness 10/14 Bm (R+G) Types and Formats Available