WTh20 High Arc Starting Capacity Tungsten Electrodes For TIG Welding

Type

compositions

colors

added oxide%

substances

substances%

tungsten%

W

<0.20

99.8

green

WT4

0.35--0.55

THO2

<0.20

remaining

blue

WT10

0.8--1.20

THO2

<0.20

remaining

yellow

WT20

1.70--2.20

THO2

<0.20

remaining

red

WT30

2.80--3.20

THO2

<0.20

remaining

violet

WT40

3.80--4.20

THO2

<0.20

remaining

orange

WZ3

0.15--0.50

ZrO2

<0.20

remaining

brown

WZ8

0.70--0.90

ZrO2

<0.20

remaining

white

WL10

0.90--1.20

LaO2

<0.20

remaining

black

WC20

1.80--2.20

CeO2

<0.20

remaining

grey

Diameter

Length

1

150 175

1.6

2

2.4

3.2 6.3

4.0 8.0

5.0 10.0

Variety

type

surface conditions

specification

applications

thorium tungsten

WTH-7

drawing

0.15--10.0

used for cathode with spring book; high temperature shock--proof lamp wire;cathodesof gas--discharging light source,etc.

WTH-10

cleaning

WTH-15

forging

thorium tungsten rhenium

WTG-15-1RE

drawing

0.35--10.0

Used for cathodes of powerful emitters.