AWS A5.20-A5.20M pdf free download
AWS A5.20-A5.20M pdf free download.Specification for Carbon Steel Electrodes for Flux Cored Arc Welding.
(2) The positions of welding for which the electrode is suitable, as shown in Table 2 and Figure 1.
(3) Certain usability characteristics of the electrode (including the presence or absence of a shielding gas) as specified in Table 2 and Figure 1.
3.1.2 Flux cored electrodes classified for single pass welding are classified in the as-welded condition according to the following:
(1) The tensile properties of the weld metal obtained with a particular shielding gas, if any, as specified in Table IU [Table 1MI.
(2) The positions of welding for which the electrode is suitable, as shown in Figure 1.
(3) Certain usability characteristics of the electrode (including the presence or absence of a shielding gas), as specified in Table 2 and Figure I.
3.2 Electrodes classified under one classification shall not be classified under any other classification in this specification with the exceptions that (1) an electrode may be classified with 100% CO2 (AWS A5.32/A5.32M Class SG-C) shielding gas (“C” designator) and with a 75—80% argon/balance CO2 (AWS A5.32/A5.32M Class SG-AC-25 or SG-AC-20) gas mixture (‘M” designator) and (2) an E7XT- IC, -1 M IE49XT- 1 C, -l Mj may also be classified as an E7XT-9C, -9M [E49XT-9C, -9M] and! or E7XT-l2C, -12M [E49XT-12C, -12M] providing the electrode meets all the requirements of each classification.
Electrodes may be classified under A5.20 using U.S. Customary Units or under A5.20M using the International System of Units (SI), or they may he classified under both systems. Electrodes classified under either classification systems must meet all requirements for classification under that system. The classification system is shown in Figure 1.
3.3 The electrodes classified under this specification are intended for flux cored arc welding, either with or without an external shielding gas. Electrodes intended for use without external shielding gas, or with the shielding gas specified in Table 2, are not prohibited from use with any other process or shielding gas for which they are found suitable.
4. Acceptance
Acceptance6 of the welding electrodes shall be in accordance with the provisions of AWS A5.01.
5. Certification
By affixing the AWS specification and classification designations to the packaging, or the classification to the product, the manufacturer certifies that the product meets the requirements of this specification7.
6. Rounding-Off Procedure
For the purpose of determining conformance with this specification, an observed or calculated value shall be rounded to the nearest 1,000 psi for tensile and yield strength for A5.20 For to the nearest 10 MPa for tensile and yield strength for A5.20M1 and to the nearest unit in the last right-hand place of figures used in expressing the limiting values for other quantities in accordance with the rounding-off method given in ASTM E 29.
7. Summary of Tests
7.1 The tests required for each classification are specified in Table 3. The purpose of these tests is to determine the mechanical properties, soundness, and chemical composition of the weld metal, and the usability of the electrode. The base metal for the weld test assemblies, the welding and testing procedures to he employed, and the results required are given in Sections 9 through 15.AWS A5.20-A5.20M pdf download.
