Table of Contents

Personnel
Foreword
List of Tables
List of Figures
1. Scope and Introduction
    1.1 Scope
    1.2 Introduction to the Gas Tungsten Arc Welding
          (GTAW) Process
    1.3 History
2. Normative References
    2.1 American Conference of Governmental Industrial
          Hygienists Standards
    2.2 AWS Standards
    2.3 ISO Standards
    2.4 OSHA Standards
3. Definitions
4. GTAW Principles
    4.1 Process Description
    4.2 Process Advantages
    4.3 Process Limitations
    4.4 Process Variables
    4.5 Related Variables
5. Equipment and Supplies
    5.1 Welding Power Sources (Used for GTAW) - Introduction
    5.2 Controllers
    5.3 Pulse Controllers
    5.4 Weld Sequence Controllers
    5.5 Arc Welding Torches
    5.6 Wire Feeders
    5.7 Arc and Torch Oscillators
    5.8 Arc Initiation Equipment
6. Tungsten Electrodes
    6.1 General
    6.2 Classifications of Electrodes
    6.3 Surface Finishes
    6.4 Electrode Sizes and Current Capacities
    6.5 Electrode Tip Configurations
    6.6 Electrode Cutting
    6.7 Factors Affecting Electrode Life
    6.8 Removing Contamination
    6.9 Grinding Dust
    6.10 Storage
7. Gas Shielding, Purging, and Backing
    7.1 Torch Shielding Gas
    7.2 Purging
    7.3 Shielding and Purging Gas Purity
    7.4 Shielding and Purging Gas Economics
    7.5 Purifiers
    7.6 Purging Gas Safety
8. Fixturing and Tooling
    8.1 Material Selection
    8.2 Tooling/Fixturing Considerations
    8.3 Temporary (Soft)/Permanent (Hard) Tooling
9. Welding Techniques
    9.1 General
    9.2 Manual and Semiautomatic Welding
    9.3 Mechanized Welding
    9.4 Automated Welding
10. Joint Design, Preparation, and Welding Positions
    10.1 Introduction
    10.2 Basic Joint Configurations and Welding Positions
    10.3 Edge Preparation and Surface Cleaning
11. Welding Characteristics of Selected Alloys
    11.1 Introduction
    11.2 Carbon and Alloy Steels
    11.3 Stainless Steels and Iron-Based Superalloys
    11.4 Aluminum Alloys
    11.5 Magnesium Alloys
    11.6 Beryllium
    11.7 Copper Alloys
    11.8 Nickel Alloys
    11.9 Cobalt Alloys
    11.10 Refractory and Reactive Metals
    11.11 Cast Irons
    11.12 Welding Dissimilar Materials
    11.13 Filler Metals
12. Qualification of Procedures, Welders, and Welding
    Operators
    12.1 Introduction
    12.2 Welding Program
    12.3 Establishing Welding Requirements
    12.4 Welding Procedure Specifications (WPS)
    12.5 Procedure Qualification Records (PQR)
    12.6 Welder and Welding Operator Qualification Tests
13. Quality Control
    13.1 Introduction
    13.2 Weldment Quality
    13.3 Specifications
14. Troubleshooting
    14.1 General
    14.2 Electrical
    14.3 Inert Shielding Gas Troubleshooting
    14.4 Water Cooling Systems
    14.5 Tools and Fixtures
    14.6 Filler Material
    14.7 Design of Welded Assemblies
    14.8 Weld Joint Fit-up
15. Safety
    15.1 Hazards
    15.2 Electrical Shock
    15.3 Arc Radiation and Burns
    15.4 Welding Environment
    15.5 Oxygen Deficiency
    15.6 Noise
    15.7 Safe Handling of Cylinders
    15.8 Fires And Explosions
    15.9 Common Sense
    15.10 Grinding Dust
Nonmandatory Annexes
Annex A - Guidelines for Preparation of Technical Inquiries
          for AWS Technical Committees
Annex B - Suggested Reading List and Other References
List of AWS Documents on Arc Welding and Arc Cutting

Abstract

Specifies recommended practices for the gas tungsten arc welding (GTAW) process.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	American Welding Society
Pages
ISBN
Supersedes	AWS C5.5 : 80(R1994)