BS EN ISO 1071-2015 pdf download.Welding consumables – Covered electrodes, wires, rods and tubular cored electrodes for fusion welding of cast iron – Classification.
If an arithmetic average value is to he compared to the requirements of this International Standard. rounding shall be done only after calculating the arithmetic average, If the test method cited in Clausc2 contains instructions for rounding that conllict with the instructions of this International Standard. the rounding requirements of the Lest method standard shall apply. The rounded results shall fulfil the requirements of the appropriate table for the cbs.sllication under test.
8 Retests
lithe results or any test fail to meet the requirement, that test shall be repeated twice. The results of both retests shall meet the requirement. Specimens for retest could be taken from the orlgln.il test assembly or from a new test assembly using parent metals of the same type, welding consumables from the same production lot, and the same welding procedure as used for the first test assembly. For chemical analysis, retest need be only for those specific elements that failed to meet the test requirement
If the results of one or both retests fall to meet the requirement, the material under test siall 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 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 the test results met or failed to meet the requirement. That test shall be repe,ued following proper prescribed procedures. In this case, the requirement for doubling the number of test specimens does not apply.
9 Technical delivery conditions
The technical delivery conditions shall meet the requirements in ISO 544. The requirements for the cast rod and for the covered electrode with cast core rod shall be defined separately.
10 Designation
The designation of the consumables shall follow the principle given in the examples below,
EXAMPLE I A cast rod for oxy 1uel gas welding (R) with ii chemical composition within the limits for the alloy symbol FeC’I of T.ahle2 Is designated as follows:
Cast rod ISO 10,1 – R C FeC-I
EXAMPLE 2 A wire rlcctrode for gas shielded metal arc welding (5) with a chemical composition within the limits for the a1ioy symbol NIFe-2 of Table Ills designated as follows:
Wire electrode Iso 1071 – Sc NIFe-2
EXAMPLE 3 A tubular cored electrode for gas shielded metal arc welding (T) deposits an alI•wrld metal with a chemical composition within the limits for the alloy symbol NiFe.1 of Tahle.Il. The electrode was tested under mixed gas (1421). The designation will be:
Tubular cored electrode ISO 1071 – T C NlFe’l M21.BS EN ISO 1071 pdf download.