AWS A5.4/A5.4M pdf free download
AWS A5.4/A5.4M pdf free download.Stainless Steel Electrodes for Shielded Metal Arc Welding.
7. Summary of Tests
The tests required for each classification are specified in Table 4. The purpose of these tests is to determine the chemical composition, mechanical properties and soundness of the weld metal and the usability of the electrodes. The base metal for the weld test assemblies, the welding and testing procedures to be employed, and the resuhs required are given in Clause 9. Weld Test Assemblies; Clause 10. Chemical Analysis: Clause II. Radiographic Test: Clause 12. Tension Test; and Clause 13, Fillet Weld Test.
8. Retest
If the results of any test fail to meet the requirement, that test shall be repeated twice. The results of both retests shall meet the requirement. For chemical analysis. retest material may be taken from the original test sample or from a new sample. Retest for chemical analysis need be only for those specific elements that failed to meet the test requirement.
If the results of one or both retests fail to meet the requirement. the material under test shall be considered a.s not meeting the requirements of this specification for that classification.
In the event that, during preparation or after completion of any test, it is clearly determined that specified or proper procedures were not followed in preparing the weld test assembly or test specimen(s) or in conducting the test, the test shall be considered invalid, without regard to whether the test was actually completed, or whether test results met, or failed to meet, the requirement. That test shall be repeated. following proper specified procedures. In this case, the requirement for doubling of the number of test specimens does not apply.
9. Weld Test Assemblies
9.1 One, two, or three weld test assemblies are required depending on electrode diameter as shown in Table 4.
I. The weld pad in Figure I for chemical analysis of the undiluted weld metal
2. The groove weld in Figure 2 for Tension and Radiographic tests
3. The fillet weld in Figure 3 for usability of the electrode.
Optionally, the sample for chemical analysis may be taken from the reduced section of the fractured tension specimen or from a corresponding location (or any location above it) in the weld metal in the groove weld in Figure 2 or from the weld pad used for ferrite determination (Figure A. I), thereby avoiding the need to make the weld pad. In the case of dispute, the weld pad of Figure I shall be the referee method.
9.2 Preparation of each weld test assembly shall be as prescribed in 9.3. 9.4. and 9.5. Base metal for each assembly shall conform to the following, or an equivalent:
9.2.1 For the chemical analysis pad. the base metal to be used shall be carbon steel, alloy steel, or stainless steel of 0.25 percern carbon maximum for all electrode classifications except E3OSL, E3O8LMo, E309L E3O9LMo. E316L. E3I6LMn. E3171, E32OLR, E383. E385, E630, E2209, E2307, E2593, E2594. E2595. and E33-31. For chemical analysis of these low-carbon classifications, the base metal shall be steel of 0.03 percent maximum carbon. Other steels having a carbon content of 0.25 percent maximum may be used with the further restrictions specified in 10.6.AWS A5.4/A5.4M pdf download.
