Luma Tungsten Wire

Some characteristics of tungsten: • Tungsten has the highest melting point of all metals • High strength at high temperatures • Good conductivity for heat and electricity • High absorption capacity for radioactive radiation and X-rays

Example of Printing Medical Applications: Connectors Technical research

Antennas Fuses Lighting Properties of bare Tungsten wire Mesh Musical Strings Automotive Purity 99.95% W

Melting point 3410 °C Integrated Circuit Testing Density 19.17 g/cm3 Specific electrical 0.055 Ohm x mm2/m resistance at 20 °C Modulus of elasticity 410 kN/mm2 Wire qualities: Description at 20 °C 820 Standard, non-sag quality wire containing minimum 99.95 % W, doped with potassium, silicon and aluminium.

821 A wire of 820 standard quality, which has passed the requisite tests to meet the demands for wire of a higher standard below Ø 50 microns i.e. virtually free from traces of cracks or splits.

823 Has a low concentration of unfavourable impurities. Has a long grain structure, high recrystallization temperature and increased ductility.

Surface finishes Diameter range (microns) 20 Black drawn wire for further redrawing 50 - 500 21 Black drawn wire 8 - 500 22 Black drawn wire, straightened 8 - 500 25 Black drawn wire, used as heating element 8 - 500 31 “21” wire, electrolytically cleaned 10 - 500 32 “21” wire, straightened and electrolytically cleaned 10 - 500 34 “32” wire with a highly polished surface 10 - 500 36 “32” wire with an ultra polished surface 10 - 500 37 oxidized surface 10 - 500 41 “21” wire, electrolytically etched to the final dimension 4 - 30 42 “21” wire, straightened and electrolytically etched to the final dimension 4 - 30

Diameter tolerance Weight tolerance Wire size micron Standard On request Standard On request LUMA-METALL AB, Kalmar, Sweden ≥4<5 +/- 3.5% +/- 2% +/- 7% +/- 4% Telephone +46-480 42 90 45 ≥5<10 +/- 2% +/- 0.5% +/- 4% +/- 1% e-mail: [email protected] ≥10<18 +/- 1.5% +/- 0.25% +/- 3% +/- 0.5% www.luma-metall.se ≥18 +/- 1% +/- 0.25% +/- 2% +/- 0.5% Certified in accordance to ISO 9001:2008

2009.11 Ovality (out of roundness): ø Microns Standard Available on request

< 15 Max 6% Max 3% ≥ 15 Max 5% Max 2%

Elongation: 1 – 3%

Straightness: Wire with a finish of 32 and 42 is available in the following grades of straightness.

85/100 90/100 95/100 0 Straightness grade ø Microns < 15 ø Microns 15-30 ø Microns > 30

3 (85/100) standard - - 2 (90/100) on request standard - 1 (95/100) not available on request on request

Standard tensile strength of Tungsten

Tensile strength: 100 (cm)

Tensile strength Tungsten

4400

4200

4000

3800

3600

3400 Max mm2

N/ Average 3200 Min

3000

2800

2600

2400

2200 LUMA-METALL AB, Kalmar, Sweden 2000 8 0 0 0 0 0 0 0 0 0 0 0 0 98 77 59 43 30

mg/200mm Telephone4. +46-480 42 90 45 271 236 204 173 146 120 109 3.70 2.70 1.90 1.20 0.70 0.30 7.50 2.70 4.80 1.20 7.50 4.80 2.70 7.50 4.80 2.70 1.20 87.0 67.8 50.9 36.4 24.4 14.8 19.3 10.8 19.3 14.8 10.8 10.8 e-mail: [email protected] Micron 300 280 260 240 220 200 180 160 140 120 100 190 170 150 130 110 90 70 50 30 80 60 40 20 80 70 60 50 40 30 60 50 40 30 20 40 35www.luma-metall.se 30 25 20 15 10

Certified in accordance to ISO 9001:2000