Pure Tungsten Electrode Current Selection

Pure tungsten electrode current selection is as following:

Electrode Diameter (mm)	Direct Current (DC)				Alternating Current (AC)
	Electrode Negative (-)		Electrode Positive (+)		Electrode A	Electrode B
	Electrode A	Electrode B	Electrode A	Electrode B
0.25	Up to 15	Up to 15	Not applicable	Not applicable	Up to 15	Up to 15
0.30	Up to 15	Up to 15	Not applicable	Not applicable	Up to 15	Up to 15
0.50	2~20	2~20	Not applicable	Not applicable	2~15	2~15
1.0	10~75	10~75	Not applicable	Not applicable	15~55	15~70
1.5	60~150	60~150	10~20	10~20	45~90	60~125
1.6	60~150	60~150	10~20	10~20	45~90	60~125
2.0	75~180	100~200	15~25	15~25	65~125	85~160
2.4	120~220	150~250	15~30	15~30	80~140	120~210
2.5	130~230	170~250	17~30	17~30	80~140	120~210
3.0	150~300	210~310	20~35	20~35	140~180	140~230
3.2	160~310	225~330	20~35	20~35	150~190	150~250
4.0	275~450	350~480	35~50	35~50	180~260	240~350
4.8	380~600	480~650	50~70	50~70	240~350	330~450
5.0	400~625	500~675	50~70	50~70	240~350	330~460
6.3	550~875	650~950	65~100	65~100	300~450	430~575
6.4	575~900	750~1000	70~125	70~125	325~450	450~600
8.0						650~830
10.0
Electrode A refers to pure tungsten electrode. Electrode B refers to rare earth doped tungsten electrode. Blanks without value are not recommended.

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