Luma Tungsten Wire alloyed with 3% Rhenium
Luma Tungsten Wire
alloyed with 3% Rhenium
Advantages compared to pure tungsten - Higher recrystallization temperature- Higher thermal stability
- No brittleness i recrystallized condition- Greater tensile strength
- Superior hot strength and vibration strength
- Greater specific resistance
Example of applications
Antennas
Medical
Lighting
Printing
Technical research
Mesh
Integrated Circuit testing
Properties
of bare tungstenwire alloyed with 3% Rhenium
Purity of tungsten before rhenium addition
99.95% W
Melting point
3380 °C
Density
19.22 g/cm3
Specific electrical resistance at 20 °C
0.092 Ohm x mm2/m
Modulus of elasticity at 20 °C
430 kN/mm2
Wire qualities
Description
860
An alloy of tungsten and 3% Rhenium
861
A wire of 860 standard quality which has passed the requisite tests to meet the demands for wire of
a higher standard.
Surface finishes
2014.03
Diameter range (microns)
(mils)
20
Black drawn wire for further redrawing
50 - 500
1.96 - 19.6
21
Black drawn wire
10 - 500
0.39 - 19.6
22
Black drawn wire, straightened
10 - 500
0.39 - 19.6
31
“21” wire, electrolytically cleaned
10 - 500
0.39 - 19.6
32
“21” wire, straightened and electrolytically cleaned
10 - 500
0.39 - 19.6
34
“32” wire with a highly polished surface
10 - 500
0.39 - 19.6
36
“32” wire with an ultra polished surface
10 - 500
0.39 - 19.6
37
oxidized surface
10 - 500
0.39 - 19.6
41
“21” wire, electrolytically etched to the final dimension
4 - 30
0.16 - 1.18
42
“21” wire, straightened and electrolytically etched to the final dimension
4 - 30
0.16 - 1.18
Ovality (out of roundness)
ø Microns
Standard
Available on request
< 15
Max 6%
Max 3%
> 15
Max 5%
Max 2%
95
/1
00
90
/1
00
00
/1
85
80
/1
00
Straightness
0
Elongation
1 – 3%
Dimensional tolerances
Wire size
micron
Diameter tolerance
Weight tolerance
Standard
On request
Standard
On request
>4<5
+/- 3.5%
+/- 2%
+/- 7%
+/- 4%
>5<10
+/- 2%
+/- 0.5%
+/- 4%
+/- 1%
>10<18
+/- 1.5%
+/- 0.25%
+/- 3%
+/- 0.5%
>18
+/- 1%
+/- 0.25%
+/- 2%
+/- 0.5%
50
Straightness
Wire with a finish of 32 and 42 is available in the
following grades of straightness
Straightness grade
ø Microns < 15
ø Microns
15-30
ø Microns >
30
4 (80/100)
standard
-
-
3 (85/100)
on request
standard
-
2 (90/100)
on request
on request
standard
1 (95/100)
not available
on request
on request
100 (cm)
Standard tensile strength of Tungsten alloyed with 3% Rhenium
Tensile strength Tungsten/Rhenium
4400
Min
4200
Average
4000
Max
3800
N/mm 2
3600
3400
3200
3000
2800
2600
2400
30
19
140
120
100
80
60
70
60
50
40
LUMA-METALL AB, Kalmar, Sweden
Telephone +46-480 42 90 45
e-mail: [email protected]
www.luma-metall.com
30
0.30
43
160
0.68
59
180
1.20
77
200
1.88
98
220
2.71
120
240
2.71
146
260
4.82
173
280
7.53
204
300
10.84
236
Microns
14.76
271
2000
mg/200mm
11
2200
30
25
20
15
10