1/4
(6)
5/16
(8)
3/8
(10)
7/16
(11)
1/2
(12.5)
5/8
(16)
CHART 1 –
Select tungsten diameter and alumina nozzle based on current and application.
CHART 2 –
Select Collet/Collet body or Gas Lens Collet body (requires insulator) based on
tungsten diameter and application.
CHART 3
(Alumina Gas Nozzle)
–
Select alumina gas nozzle orifice size based on application.
Standard gas nozzle, 1-5/32” (29.3mm) long, or gas lens,
1” (25.4mm) long.
TYPICAL CURRENT RANGES FOR TUNGSTEN ELECTRODES
(1)
Tungsten
Electrode
Diameter
in. (mm)
Pure and
1%, 2%
Thoriated
Tungsten
Pure and
1%, 2%
Thoriated
Tungsten
DCEN (-)
DCEP (+)
Pure
Tungsten
1%, 2%
Thoriated
Tungsten
Zirconiated
Pure
Tungsten
Balanced Wave
AC
Unbalanced Wave
1%, 2%
Thoriated
Tungsten
Zirconiated
Alumina
Nozzle
Size
0.020
(0.5)
0.040
(1.0)
1/16
(1.6)
3/32
(2.4)
1/8
(3.2)
5 - 20
15 - 80
70 - 150
150 - 250
250 - 400
(2)
(2)
10 - 20
15 - 30
25 - 40
10 - 20
20 - 30
30 - 80
60 -130
100 -180
5 - 20
20 - 60
60 -120
100 -180
160 -250
5 - 15
10 - 60
50 -100
100 -160
150 -210
5 - 20
15 - 80
70 -150
140 -235
225 -325
4, 5, 6
4, 5, 6
5, 6
6, 7, 8
6, 7, 8
(1)
With argon gas.
(2)
DCEP (+) is not commonly used in these sizes.
Tungsten
Electrode
Diameter
in. (mm)
Collet
Part No.
(Industry Ref.)
Collet Body
Part No.
(Industry Ref.)
Gas Lens
Collet Body
Part No.
(Industry Ref.)
0.020
(0.5)
0.040
(1.0)
1/16
(1.6)
3/32
(2.4)
1/8
(3.2)
KP2029-1B1 (13N20)
KP2029-2B1 (13N21)
KP2029-3B1 (13N22)
KP2029-4B1 (13N23)
KP2029-5B1 (13N24)
KP2031-1B1 (13N25)
KP2031-2B1 (13N26)
KP2031-3B1 (13N27)
KP2031-4B1 (13N28)
KP2031-5B1 (13N29)
KP2033-1B1 (45V41)
KP2033-2B1 (45V42)
KP2033-3B1 (45V43)
KP2033-4B1 (45V44)
KP2033-5B1 (45V45)
Nozzle Orifice
Diameter
in. (mm)
Size
(16th of an inch)
Standard Nozzle
Part No.
(Industry Ref.)
Gas Lens
Part No.
(Industry Ref.)
4
5
6
7
8
10
KP2017-1B1 (13N08)
KP2017-2B1 (13N09)
KP2017-3B1 (13N10)
KP2017-4B1 (13N11)
KP2017-5B1 (13N12)
KP2017-6B1 (13N13)
KP2019-1B1(53N58)
KP2019-2B1(53N59)
KP2019-3B1(53N60)
KP2019-4B1(53N61)
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