AWS A5.10-A5.10M:1999 pdf download.Specification for Bare Aluminum and Aluminum-Alloy Welding Electrodes and Rods
6. Units of Measure and Rounding Off Procedure
6.1 This specification makes use of both U.S. Customary Units and the International System of Units (SI). The measurements are not exact equivalents; therefore, each system must be used independently of the other without combining values in any way. The specification with the designation A5.10 uses the U.S. Customary Units. The specification A5.10M uses SI Units. The latter are shown in appropriate columns in tables and in figures, and within brackets[ ] when used in the text.
6.2 For the purpose of determining conformance with this specification, 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 value in accordance with the rounding-off method given in ASTM E 29, Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications.
7. Summary ofTests
The tests required for each classification are specified in Table 2. The purpose of these tests is to determine the chemical composition of the filler metal, soundness of the weld metal produced by gas metal arc welding elec-trodes, and the deposition characteristics of welding rods. The base metal for the weld test assemblies, the welding and testing procedures to be employed, and the results required are given in Sections 9 through 12.
In the event that, during preparation or after comple-tion of any test, it is clearly determined that prescribed or proper procedures were not followed in preparing the test sample(s), or in conducting the test, the test shall be con-sidered 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 fol-lowing proper prescribed procedures. In this case, the re-quirement for doubling the number of test specimens does not apply.
9.2 Usability tests shall be made using electrodes and welding rods of each size. A filler metal that satisfacto-rily meets the requirements of the radiographic sound-ness test, when tested as an electrode, may also be classified as a welding rod without being subjected to the bead-on-plate test required for a welding rod. A filler metal that satisfactorily meets the bead-on-plate weld test requirements, when tested as a welding rod, shall also be tested as an electrode and meet the requirements of the radiographic soundness test in order to be classi-fied as an electrode.AWS A5.10-A5.10M pdf download.