AWS A5.9-A5.9M pdf free download

AWS A5.9-A5.9M pdf free download.Bare Stainless Steel Welding Electrodes and Rods.
3. Classification 3.1 The welding materials covered by this specification are classified according to chemical composition and product form. The first two designators are“ER” for solid wires that may be used as electrodes or rods;“EC” for composite cored or stranded wires; and“EQ” for strip electrodes (see Table 1). 3.2 Materials may be classified under more than one classification provided they meet all the requirements of those classifications as specified in Table 1. 4. Acceptance Acceptanceb of the material shall be in accordance with the provisions of AWS A5.01M/A5.01 (ISO 14344:2002 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.7 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 E 29 or Rule A in Clause B.3 of ISO 80000-1 (the results are the same). If the measured values are obtained by equipment calibrated in units other than those of the specified linmit, 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 unit in the last right-hand place of figures used in expressing the limiting values for other quantities. The rounded-off results shall fiulfill the requirements for the classification under test.
7. Summary of Tests 7.1 Chemical analysis of the solid electrode, rod, or strip is the only test required for classification of these product forms under this specification. 7.2 Chemical analysis of a fused sample of composite or stranded electrode, rod, or strip is the only test required for classification of these product forms under this specification. See Annex Clause A5, Preparation of Samples for Chemical Analysis. 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. Material for retest may be taken from the original test sample or from a new sample. Retest 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 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 pro- cedures were not followed in preparing the samples 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 prescribed procedures. In this case, the requirement for doubling of the number of test samples does not apply.AWS A5.9-A5.9M pdf download.