Pure Tungsten Electrode Packing

Pure tungsten electrode packing is based on the dimensions of the electrode. Regularly, the popular sizes with lengths of 150mm and 175mm are packed in 10pcs/box, which is plastic box.

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Pure Tungsten Electrode Color Code

We could find the color code based on ISO6848 from the following table and the color code for pure tungsten electrode is green. 

Product	Grade	Color	RGB Code	Color Sample
Pure Tungsten Electrode	WP	Green	#008000
Cerium Tungsten Electrode	WC20	Grey	#808080
Lanthanum Tungsten Electrode	WL10	Black	#000000
	WL15	Gold	#FFD700
	WL20	Blue	#0000FF
Thorium Tungsten Electrode	WT10	Yellow	#FFFF00
	WT20	Red	#FF0000
	WT30	Violet	#EE82EE
Zirconium Tungsten Electrode	WZ3	Brown	#A52A2A
	WZ8	White	#FFFFFFF

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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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Pure Tungsten Electrode Standard Lengths

Lengths of pure tungsten electrode can be tested by vernier caliper, which includes inner diameter and outer diameter. Besides the standard lengths, tungsten electrode length can be customized, so is the tolerance.

Lengths (mm)	Tolerance (mm)
50	+/-1.5
75	+2.5, -1.0
150	+4, -1
175	+6, -1
300	+8, -1
450	+8, -1
600	+13, -1
Customized can be ordered.

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Pure Tungsten Electrode Standard Diameters

Diameters of pure tungsten electrode can be tested by vernier caliper, which includes inner diameter and outer diameter. For solid tungsten electrode, the diameter is outer one. The key caliper is used mm as its unit with grids of 10, 20, and 50.

Besides the standard diameters, tungsten electrode diameter can be customized, so is the tolerance.

Diameter(mm)	Tolerance (mm)
0.25	+/-0.02
0.30	+/-0.02
0.50	+/-0.05
1.0	+/-0.05
1.5	+/-0.05
1.6	+/-0.05
2.0	+/-0.05
2.4	+/-0.1
2.5	+/-0.1
3.0	+/-0.1
3.2	+/-0.1
4.0	+/-0.1
4.8	+/-0.1
5.0	+/-0.1
6.3	+/-0.1
6.4	+/-0.1
8.0	+/-0.1
10.0	+/-0.1

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Tungsten Insert Gas Welding of Pure Tungsten Electrode

Tungsten Insert Gas Welding (TIG) or Gas Tungsten Arc Welding (GTA) is the arc welding process in which arc is generated between non consumable tungsten electrode and work pieces. The tungsten electrode and the weld pool are shielded by an inert gas normally argon and helium. This is also available in pure tungsten electrode.

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Pointed Pure Tungsten Electrode

A pointed and/or truncated tip (for pure tungsten electrode, ceriated, lanthanated and thoriated types) should be used for inverter AC and DC welding processes. To properly grind the tungsten, use a grinding wheel specially designated for tungsten grinding (to avoid contamination) and one that is made of borazon or diamond (to resist tungsten’s hardness). So it can be applied in pure tungsten electrode.

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Balled Tip Pure Tungsten Electrode

A balled tip is generally used for pure tungsten electrode and is suggested for use with the AC process on sine wave and conventional square wave TIG welders. To properly ball the end of the tungsten, simply apply the AC amperage recommended for a given electrode diameter and the ball on the end of the tungsten will form itself. The diameter of the balled end should not exceed 1.5 times the diameter of the electrode (for example, a 1/8-in. electrode should form a 3/16-in. diameter end), as having a larger sphere at the tip of the electrode can reduce arc stability and/or fall off and contaminate the welding.

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