ISO 23694:2021 pdf free download – Wrought magnesium and magnesium alloys一Extruded rods/bars and tubes.
6.2 Test methods
6.2.1 Chemical composition
Methods of analysis shall be agreed between the supplier and the purchaser.
In case of dispute concerning the chemical composition, referee analysis shall be carried out by the
methods and the results obtained by these methods shall be accepted.
6.2.2 Tensile test
The tensile test shall be carried out in accordance with Iso 6892-1.
6.2.3 Surface finish
Unless otherwise specified, examination of surface appearance shall be carried out, without the assistance of magnifying apparatus, on products before delivery.
6.2.4 Measurement of dimensions
All dimensions shall be measured with suitably calibrated instruments which are appropriate to the range of dimensions under consideration. The measurements shall be made at ambient temperature or, in the case of dispute, at a temperature of between 15 °C and 35 °C.
6.2.5 Additional tests
If any other tests are required, they shall be agreed between the supplier and the purchaser. These tests shall be carried out in accordance with the relevant International Standards or a method agreed between the supplier and the purchaser.
6.3 Retests
6.3.1 Mechanical properties
If any one of the test pieces first selected fails to meet the requirements for the mechanical tests, the following procedure shall be applied:
— if an error is clearly identified, either in the test piece preparation or the test procedure, then the corresponding result shall be disregarded and the testing recommended as initially required;
— if this is not the case, then two further specimens shall be taken from the same inspection lot, one being from the same unit of product (rod/bar, tube, profile) from which the original specimen was taken, unless that unit of product has been withdrawn by the supplier:
— if both test pieces from these additional specimens meet the requirements, the inspection lot which they represent shall be deemed to conform to the requirements of this document;
should one test piece fail to meet the required limits:
— the inspection lot shall be deemed not to conform to the requirements of this document;
— or, where applicable, the lot may be submitted to additional mechanical or thermal treatment(s) and then retested as a new lot.
6.3.2 Other properties
The retest procedure of other properties shall be agreed upon between the supplier and the purchaser.
The test report shall include:
a) the sample;
b) the International Standard used (including its year of publication);
c) the method used;
d) the result(s), including a reference to the clause which explains how the results were calculated;
e) any unusual features observed;
f) the date of the test.
7 Marking
Marking of products is only undertaken when agreed upon between the supplier and the purchaser and is stated on the order. This marking shall not adversely affect the final use of the product.
8 Packing
Unless otherwise specified in International Standards relating to special products or specified in the order, the method of packing shall be determined by the supplier, who shall take all suitable precautions to ensure that, under the usual conditions of transportation, the products are delivered in a condition suitable for use.
9 Transportation and storage
During transportation, all the products shall be kept clean, dry and away from contamination. Rain and snow shall be kept off to prevent erosion of the packing case. Chemically active substances, dampened materials or inflammable substances shall not be used. Loading and unloading should be done with caution to avoid damage of the packing.
Immediately after receiving, the products should be preserved in a dry and clean environment, which is free of corrosive gas, chemical active substances, dampened materials and in flammable substances, and sheltered from rain and snow. Inspection for the erosion should be done within 10 days. Anticorrosion treatment should be regularly carried out for the sheet materials.