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CHART 1 –
Select tungsten diameter and alumina nozzle based on current and application.
TYPICAL CURRENT RANGES FOR TUNGSTEN ELECTRODES
DCEN (-)
Tungsten
Pure and
Electrode
Diameter
Thoriated
in. (mm)
Tungsten
0.020 (0.5)
0.040 (1.0)
15 - 80
1/16
(1.6)
70 - 150
3/32
(2.4)
150 - 250
1/8
(3.2)
250 - 400
With argon gas.
(1)
CHART 2 –
Select Collet/Collet body or Gas Lens Collet body (requires insulator) based on
tungsten diameter and application.
Tungsten
Electrode
Diameter
in. (mm)
0.020
(0.5)
0.040
(1.0)
1/16
(1.6)
3/32
(2.4)
1/8
(3.2)
CHART 3
(Alumina Gas Nozzle)
Diameter
in. (mm)
1/4
(6)
5/16
(8)
3/8
(10)
7/16
(11)
1/2
(12.5)
5/8
(16)
DCEP (+)
Pure and
1%, 2%
1%, 2%
Thoriated
Tungsten
5 - 20
(2)
(2)
10 - 20
15 - 30
25 - 40
DCEP (+) is not commonly used in these sizes.
(2)
Collet
Part No.
(Industry Ref.)
KP4749-020 (13N20)
KP4749-040 (13N21)
KP4749-116 (13N22)
KP4749-332 (13N23)
KP4749-18 (13N24)
–
Standard gas nozzle, 1-5/32" (29.3mm) long, or gas lens,
1" (25.4mm) long.
Size
(16th of an inch)
4
5
6
7
8
10
Balanced Wave
1%, 2%
Pure
Thoriated
Tungsten
Tungsten
Zirconiated
10 - 20
5 - 20
20 - 30
20 - 60
30 - 80
60 -120
60 -130
100 -180
100 -180
160 -250
Collet Body
Part No.
(Industry Ref.)
KP4751-020 (13N25)
KP4751-040 (13N26)
KP4751-116 (13N27)
KP4751-332 (13N28)
KP4751-18 (13N29)
Standard Nozzle
Part No.
(Industry Ref.)
KP4755-4 (13N08)
KP4755-5 (13N09)
KP4755-6 (13N10)
KP4755-7 (13N11)
KP4755-8 (13N12)
KP4755-10 (13N13)
(1)
AC
Unbalanced Wave
1%, 2%
Pure
Thoriated
Tungsten
Tungsten
Zirconiated
5 - 15
5 - 20
10 - 60
15 - 80
50 -100
70 -150
100 -160
140 -235
150 -210
225 -325
Gas Lens
Collet Body
Part No.
(Industry Ref.)
KP4753-020 (45V41)
KP4753-040 (45V42)
KP4753-116 (45V43)
KP4753-332 (45V44)
KP4753-18 (45V45)
Gas Lens
Part No.
(Industry Ref.)
KP4757-4 (53N58)
KP4757-5 (53N59)
KP4757-6 (53N60)
KP4757-7 (53N61)
KP4757-8 (53N61S)
Alumina
Nozzle
Size
4, 5, 6
4, 5, 6
5, 6
6, 7, 8
6, 7, 8
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