Tungsten Welding Electrodes
Powders That Shape Your World
Technical Information Bulletin
Global Tungsten & Powders Corp. is a leading manufacturer of precision tungsten rod products,
which are used as electrodes in Gas Tungsten Arc-Welding (GTAW) also known as Tungsten
Inert Gas Welding (TIG). These electrodes are also used successfully for Plasma Cutting. The
product line consists of the following six alloys of tungsten. All GTP tungsten electrodes comply
with AWS Specification A5.12-2009.
PURETUNG®
Color code - Green
1% THORIATED
TUNGSTEN
Color code - yellow
2% THORIATED
TUNGSTEN
Color code - red
LANTHANA ONE
POINT FIVE™
Color code - gold
2% CERIATED
TUNGSTEN
Color code - orange
ZIRTUNG®
Color code - brown
GTP designation for pure tungsten electrodes. These electrodes are for general purpose use and will give good results welding a variety of metals under many operating
conditions.
GTP designation for thorium dioxide doped tungsten electrodes containing 0.8% to
1.2% ThO2. These electrodes provide easy arc starting, arc stability, good current
capacity, and resistance to weld pool contamination.
GTP designation for thorium dioxide doped tungsten electrodes containing 1.8% to
2.2% ThO2. These electrodes have easier arc starting, better arc stability, higher current capacity, longer life, and increased resistance to weld pool contamination when
compared with 1% thoriated.
GTP designation for lanthanum oxide doped tungsten electrodes containing 1.2% to
1.6% La2O3 by weight. These electrodes can be used as a non-radioactive substitute
for 2% thoriated tungsten. They will provide very similar performance with a minimum
amount of adjustment of operating conditions required. These materials are certified
to be free of radioactivity.
GTP designation for cerium dioxide doped tungsten electrodes containing 1.8% to
2.2% CeO2. These electrodes can be used as a substitute for 2% thoriated in most
applications. Ceriated electrodes are characterized by ease of starting, good arc stability, long life, high current capacity, and lack of radioactivity.
GTP developed zirconium dioxide doped tungsten electrodes containing less than 1%
ZrO2. Longer life and better operation can be expected of these electrodes in certain
types of AC welding.
Standard Processes and Finishes
Electrodes below 0.132” (3.35 mm) in diameter are drawn to size prior to finishing; whereas, larger diameter
electrodes are swaged. All GTP electrodes are supplied with a smooth, round, bright centerless ground finish.
Global Tungsten & Powders Corp.
1 Hawes Street
Towanda, PA 18848 / USA
Phone: (570) 268-5000
Fax: (570) 268-5323
e-mail: info@globaltungsten.com
Tungsten Welding Electrodes
Powders That Shape Your World
Technical Information Bulletin
Sizes and Specifications
Electrode size is expressed in both diameter and length. All standard AWS sizes in both English and Metric measurements
are available, as well as nonstandard sizes on request. All GTP electrodes are certified to the most recent AWS specification.
Color Coding
All GTP Tungsten Electrodes are color coded for efficiency, safety, and positive identification. Each electrode is colored on
one end to designate the type of metal. In addition, the end labels of each carton are colored to provide fast and efficient
selection of material in stock.
Packaging
Attractive packing has been designed for popular sizes to help in stocking inventory for resale.
The standard package contains ten electrodes. Each carton label is color coded and has complete data identifying the electrodes.
Ordering Information
1. Specify type of material
2. Specify quantity
3. Specify size and length
4. Specify in house date
5. Specify the method of shipping preferred
Visit us at www.globaltungsten.com
Global Tungsten & Powders
1 Hawes Street
Towanda, PA 18848
USA
Phone: +1 (570) 268-5000
Fax: +1 (570) 268-5323
Info@globaltungsten.com
History of Global Tungsten & Powders:
For over 60 years, GTP in Towanda has been producing tungsten, molybdenum, cobalt, and tantalum powder products.
GTP produces a wide range of materials, which are used in the manufacture of numerous products. These products include
metal working tools for cutting, rolling, and stamping; high temperature jet engine components and protective coatings; circuit manufacturing chemicals for microelectronics; catalysts for petrochemical processing; lighting components and others.
The information and recommendations contained in this publication are based upon data collected by Global Tungsten & Powders Corp. and believed to be correct. However,
no guarantee or warranty of any kind, expressed or implied, is made with respect to the information contained herein, and Global Tungsten & Powders Corp. assumes no
responsibility for the results of the use of products and processes described herein. No statements or recommendations made herein are to be construed as inducements to
infringe any relevant patent, now or hereafter in existence.
© 2008 GTP