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CHART 7 –
Select tungsten diameter and alumina nozzle based on current and application.
TYPICAL CURRENT RANGES FOR TUNGSTEN ELECTRODES
DCEN (-)
Tungsten
Pure and
Electrode
1%, 2%
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
5/32
(4.0)
400 - 500
With argon gas.
(1)
CHART 8 –
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)
5/32
(4.0)
CHART 9
(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)
11/16
(17)
Size "short" is 1-1/8" (28.5mm) long.
(1)
DCEP (+)
Pure and
1%, 2%
Thoriated
Tungsten
5 - 20
(2)
(2)
10 - 20
15 - 30
25 - 40
40 - 55
DCEP (+) is not commonly used in these sizes.
(2)
Collet
Part No.
(Industry Ref.)
KP4750-020 (10N21)
KP4750-040 (10N22)
KP4750-116 (10N23)
KP4750-332 (10N24)
KP4750-18 (10N25)
KP4750-532 (54N20)
–
Standard gas nozzle, 1-27/32" (48.6mm) long, or gas lens,
1-5/8" (41.2mm) long.
Size
(16th of an inch)
4
5
6
7
8
10
Short
Not recommended for use with high frequency currents.
(2)
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
160 -240
200 -320
Collet Body
Part No.
(Industry Ref.)
KP4752-020 (10N29)
KP4752-040 (10N30)
KP4752-116 (10N31)
KP4752-332 (10N32)
KP4752-18 (10N28)
KP4752-532 (406488)
Standard Nozzle
Part No.
(Industry Ref.)
KP4756-4 (10N50)
KP4756-5 (10N49)
KP4756-6 (10N48)
KP4756-7 (10N47)
KP4756-8 (10N46)
KP4756-10 (10N45)
––
(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
200 -275
300 -400
Gas Lens
Collet Body
(Industry Ref.)
KP4754-020 (45V29)
KP4754-040 (45V24)
KP4754-116 (45V25)
KP4754-332 (45V26)
KP4754-18 (45V27)
KP4754-532 (45V28)
(Industry Ref.)
KP4758-4 (54N18)
KP4758-5 (54N17)
KP4758-6 (54N16)
KP4758-7 (54N15)
KP4758-8 (54N14)
KP4758-11
Alumina
Nozzle
Size
4, 5, 6
4, 5, 6
5, 6
6, 7, 8
6, 7, 8
8, 10
Part No.
Gas Lens
Part No.
––
(54N19)
(2)
(2)
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