AWS A5.9 pdf free download

AWS A5.9 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
Acceptance5 of the material shall be in accordance with the provisions of AWS A5.Ol.
5. Certification
By affixing the AWS specification and classification designations to the packaging, or the classification to the product. thc manufacturer certifies that the product meets the requirements of this specification.6
6. Rounding-Off Procedure
For the purpose of determining conformance with this specification, an observed or calculated value shall he rounded to the “nearest unit” in the last right-hand place of figures used in expressing the limiting value in accordance with the rounding-off method given in ASTM E 29.
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 tinder 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 he 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 he 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 he 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 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 he repeated, following proper prescribed procedures. In this case the requirement for doubling of the number of test samples does not apply.
9. Chemical Analysis
9.1 A sample of the filler metal, or the stock from which it is made in the case of solid electrodes or rods, or a fused sample shall be prepared for analysis. Sec Annex Clause A5, Preparation of Samples for Chemical Analysis, for several possible methods.
9.2 The sample shall he analyzed by acceptable analytical methods capable of determining whether the composition meets the requirements of this specification. In case of dispute, the referee method shall he ASTM E 353.
9.3 The results of the analysis shall meet the requirements of Table 1 for the classification of the filler metal under test.
10. Method of Manufacture
The welding rods, strip, and electrodes classified according to this specification may be manufactured by any method that will produce material that meets the requirements of this specification.
11. Standard Sizes and Shapes
11.1 Standard sizes for filler metal (except strip electrodes) in the different package forms (straight lengths, coils with support. coils without support, and spools) shall he as shown in Table 2.
11.2 Standard sizes for strip electrodes in coils shall he as shown in Table 3.AWS A5.9 pdf download.