AWS A5.34 – A5.34M pdf free download

AWS A5.34 – A5.34M pdf free download.Nickel-Alloy Electrodes for Flux Cored Arc Welding.
4. Acceptance Acceptance5 of the electrodes shall be in accordance with the provisions of AWS A5.01M/A5.01 (ISO 14344 MOD). 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 specification. 6 6. Rounding-Off Procedure For the purpose of determining compliance with the requirements of this standard, the actual test values obtained shall be subjected to the rounding off rules of ASTM E29 or Rule A in Clause B.3 ofISO 80000 I (the results are the same). If the measured values are obtained by equipment calibrated in units other than those of the specified limit, the measured values shall be converted to the units of the specified limit before rounding off. If an average value is to be compared to the specified limit, rounding off shall be done only after calculating the average. An observed or calculated value shall be rounded to the nearest 1000 psi (1 ksi) for tensile strength for A.34 or to the nearest 10 MPa for tensile strength for A5.34M; and to the nearest unit in the last right hand place offigures used in expressing the limiting values for other quantities. The rounded off results shall fulfill the requirements for the classification under test. 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 chemical composition, the mechanical properties, soundness of the weld metal, and the welding position usability characteristics of the electrode using the specified shielding gas. 7.2 The base metals for the weld test assemblies are as specified in Tables 4 and 5. The welding and testing procedures to be employed, and the results required are given in Clauses 9 through 14.8. Retest If any test fails to meet the requirement, that test shall be repeated twice. The results of both retests shall meet the require ment. Specimens for the retest may be taken from the original test assembly or from a new test assembly. For chemical analysis, retest need be only for those specific elements that failed to meet their requirement. If the results of one or both retests fail to meet the requirement, the material under test shall be considered as 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 prescribed 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 prescribed procedures. In this case, the requirement for doubling of the number of test specimens does not apply. 9. Weld Test Assemblies 9.1 Up to four weld test assemblies may be needed, depending upon the classification, as specified in Table 3. They are : (1) the weld pad in Figure l for chemical analysis of the undiluted weld metal (2) the groove weld in Figure 2 for mechanical properties and soundness of the weld metal (3) the groove weld in Figure 3 for longitudinal bend testing (4) the fllet weld in Figure 4 for welding position usability of the electrode. The sample for chemical analysis may be taken from the reduced section of the fractured tension specimen, or from a cor responding location (or any location above it) in the weld metal of the groove weld in Figure 2, thereby avoiding the need to make the weld pad. In case of dispute, the weld pad shall be the referee method.AWS A5.34 – A5.34M  pdf download.