Luma Gold Plated Tungsten Wire Luma Gold Plated Tungsten Wire For some applications tungsten wire has to be plated to meet special requirements. This may be for instance to protect the wire from corrosion, to solder it to other metals or to reduce the secondary emission of electrons. Example of Applications: Printing Medical Connectors Technical research Antennas Fuses Properties of bare Tungsten wire Purity 99.95% W Melting point 3410 °C Density 19.17 g/cm3 Wire qualities: Description 0.055 Ohm x mm2/m 821/60 Specific electrical resistance at 20 °C Type of strike: Gold Modulus of elasticity at 20 °C 410 kN/mm2 Treatment before plating: Etched 821/65 Treatment before plating: Etched Type of strike: Gold This quality is processed to meet demands for medical use. 821/66 Treatment before plating: Ultra polished Type of strike: Gold 821/67 Treatment before plating: Ultra polished Type of strike: Nickel Wire dimensions: 5 – 500 microns Diameter tolerances: +/- 4% by weight as standard Minimum +/- 1.5% available on request Gold coat thickness: For wire dimensions below 50 microns, the coat thickness corresponds to 3 – 5% by weight as standard. For wire dimensions from 50 microns the coat thickness is 0.5 micron as standard. The coat thickness can be adjusted to meet your requirements Examples of wire dimensions with coat thickness as per Luma standard 2009.11 Wire dimension (microns) Wire dimension (mils) 25 50 75 100 150 0.984 1.97 2.95 3.94 5.91 Au coat thickness (microns) 0.25 +/- 0.07 0.5 +/- 0.1 0.5 +/- 0.1 0.5 +/- 0.1 0.5 +/- 0.1 Au coat by weight (%) 3.0 - 5.0 3.0 - 5.0 2.2 - 3.2 1.6 - 2.4 1.0 - 1.6 LUMA-METALL AB, Kalmar, Sweden Telephone +46-480 42 90 45 e-mail: sales@luma-metall.se www.luma-metall.se Certified in accordance to ISO 9001:2008 Ovality (out of roundness): ø Microns Standard Available on request < 15 ≥ 15 Max 6% Max 5% Max 3% Max 2% Elongation: 95 /1 00 90 /1 00 80 /1 00 Straightness: 85 /1 00 1 – 3% 0 Straightness grade 4 3 2 1 ø Microns < 15 ø Microns ≥ 15 standard on request on request not available standard on request on request (80/100) (85/100) (90/100) (95/100) 50 100 (cm) Tensile strength of Gold Plated Tungsten Tensile strength: Tensile strength Gold Plated Tungsten 3900 Max 3700 Average 3500 Min 3300 N/mm2 3100 2900 2700 2500 2300 2100 1900 Micron 300 280 260 240 220200 180 160 140 120 100 190 170 150 130 110 90 70 50 30 80 70 60 50 40 30 80 70 60 50 40 30 60 50 40 0.30 0.68 1.20 1.88 2.71 3.69 4.82 1.20 2.71 4.82 7.53 10.84 2.71 4.90 7.60 10.84 14.76 19.28 2.71 4.82 7.53 10.84 14.76 19.28 2.71 7.53 14.76 24.40 36.45 50.90 67.77 87.05 108.73 30 43 59 77 98 120 146 173 204 236 1500 mg/200mm 271 1700 LUMA-METALL AB, Kalmar, Sweden Telephone +46-480 42 90 45 30 20 40 35 30 25 20 15 10 e-mail: sales@luma-metall.se www.luma-metall.se Certified in accordance to ISO 9001:2000