Green Band | Miller Electric CV-2 guide

the tungsten will become contaminated.

OM-880 Page 20

Do not use same wheel for any other job or

•

B. For DC Electrode Negative Welding (Figures 6-2 And 6-3)

CAUTION: HOT FLYING METAL PARTICLES can injure personnel, start fires, and dam- age equipment; TUNGSTEN CONTAMINA-

TION can lower weld quality.

• Shape tungsten electrode only on grinder with proper guards in safe location wearing proper face, hand, and body protection.

Table 6-2. Tungsten Electrode Size

Electrode Diameter		Amperage Range - Polarity - Gas Type

Pure Tungsten	DC-Argon Electrode	DC-Argon Electrode	AC-Argon Using	AC-Argon Balanced
(Green Band)	Negative/Straight Polarity	Positive/Reverse Polarity	High Frequency	Wave Using High Freq.

.010”	Up to 15	*	Up to 15	Up to 10
.020”	5-20	*	5-20	10-20
.040”	15-80	*	10-60	20-30
1/16”	70-150	10-20	50-100	30-80
3/32”	125-225	15-30	100-160	60-130
1/8”	225-360	25-40	150-210	100-180
5/32”	360-450	40-55	200-275	160-240
3/16”	450-720	55-80	250-350	190-300
1/4”	720-950	80-125	325-450	250-400
2% Thorium Alloyed
Tungsten
(Red Band)

.010”	Up to 25	*	Up to 20	Up to 15
.020”	15-40	*	15-35	5-20
.040”	25-85	*	20-80	20-60
1/16”	50-160	10-20	50-150	60-120
3/32”	135-235	15-30	130-250	100-180
1/8”	250-400	25-40	225-360	160-250
5/32”	400-500	40-55	300-450	200-320
3/16”	500-750	55-80	400-500	290-390
1/4”	750-1000	80-125	600-800	340-525
Zirconium Alloyed
Tungsten
(Brown Band)

.010”	*	*	Up to 20	Up to 15
.020”	*	*	15-35	5-20
.040”	*	*	20-80	20-60
1/16”	*	*	50-150	60-120
3/32”	*	*	130-250	100-180
1/8”	*	*	225-360	160-250
5/32”	*	*	300-450	200-320
3/16”	*	*	400-550	290-390
1/4”	*	*	600-800	340-525

The figures listed are intended as a guide and are a composite of recommendations from American Welding

S-0009/8-88

1-1/2 Times

Electrode

Diameter

2-1/2 Times

Electrode

Diameter

AC And DC	DC Electrode
Electrode Positive	Negative	S-0161