Transcription of Wieland-K75 Rolled Products
1 Wieland-K75 Rolled Products CuCrSiTi C18070. Material Designation Chemical Composition (Reference) Typical Applications EN no EN standard Cr % Components for the electrical UNS* C18070 Ti % industry Stamped parts * Unified Numbering System (USA) Si %. Relay springs Cu balance Semiconductor components Connectors suitable for use at elevated temperatures Physical Properties* Fabrication Properties Corrosion Resistance Electrical MS/m 45 Capacity for Being Wieland-K75 is resistant to pure Conductivity %IACS 78 Cold Worked good water vapour and non oxidizing acids Thermal Conductivity W/(m K) 310 Machinability less suitable and alkalis as well as neutral saline solutions. The material is insensitive Coefficient Capacity for Being to stress corrosion cracking. of Electrical Electroplated good Resistance** 10-3/K Capacity for Being Coefficient of Hot-Dip Tinned good Thermal Expansion** 10-6/K Soft Soldering good Density g/cm3 Resistance Modulus of Elasticity GPa 138 Welding fair Specific Heat J/(g K) Gas Shielded Poisson's Ratio Arc Welding excellent * Reference values at room temperature Laser Welding fair ** Between 0 and 300 C.
2 Mechanical Properties K75. Temper R400 R460. 54 R530 R550. Tensile Strength Rm MPa 400 480 460 560. 52 530 610 550 630. El. conductivity (MS/m). Yield Strength MPa 300 400. 50 460 520. Elongation A50mm % 8 948 10 10. Hardness HV (for information only) (120 150) (140 170). 46 (150 190) (150 190). 44. 42. R400 R460 R530 R550. Temper Electrical Conductivity K75 Bendability (Strip Thickness t K75. mm) 90 180 . 54 6. 52 5. El. conductivity (MS/m). Rel. bending radius r/t bending edge I rolling direction 50 4. bending edge II rolling direction 48 3. 46 2. 44 1. 42 0. R400 R460 R530 R550 R400 R460 R530 R550. Temper Temper K75. 6. Wieland-K75 . CuCrSiTi C18070. Resistance K75 to Softening K75. 160 180 Vickers hardness 150 170 after heat treatment 140 160 (typical values). 130 150. Vickers Hardness HV. Vickers Hardness HV. 120 140. 110 130. 100 120.
3 Temper R460 Temper R530. 90 400 C 110 400 C. 80 450 C 100 450 C. 500 C 500 C. 70 90. 0 5 10 15 20 25 30 0 5 10 15 20 25 30. Time (min) Time (min). K75. Thermal Stress Relaxation 100 Stress remaining after thermal relaxa- tion as a function of Larson-Miller 90 parameter (F. R. Larson, J. Miller, Trans Residual Stress (%). 80. ASME74 (1952) 765 775) given by: P = (20 + log(t))*(T + 273)* 70 Time t in hours, temperature T in C. Example: P = 9 is equivalent to 60. h/118 C. 50 Measured on stress relief annealed Temper R400, R460, R530, R550 specimens parallel to rolling direction. 40 Total stress relaxation depends on the applied stress level. Furthermore, Larson-Miller parameter P. it is increased to some extent by cold deformation. 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.
4 It is dependent on the temper tested and is about 1/3 of the tensile strength Rm. Types and Formats Available Dimensions Available Standard coils with outside Hot-dip tinned strip Strip thickness from mm, diameters up to 1400 mm Contour-milled strip thinner gauges on request Traverse-wound coils with drum Sheet Strip width from 3 mm, weights up to t Strip and sheet with protective however min. 10 x strip thickness Multicoil up to 5 t coating Wieland-Werke AG 10/16 Bm (GSW/Ri). Graf-Arco-Str. 36, 89079 Ulm, Germany, Phone +49 731 944 2030, Fax +49 731 944 4257, 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.
