BS EN 1676:2010 pdf free
BS EN 1676:2010 pdf free.Aluminium and aluminium alloys – Alloyed ingots for remelting – Specifications.
To a standard agreed between suppher and purchaser, the ingots shall be reasonably free from:
a) visible defects such as grease. dirt, products of corrosion, dross or any other foreign bodies, including paint apart from that which is approved fOr marking purposes;
b) metallic or non-metallic inclusions;
c) gas porosity.
The ingots can have shrinkage holes or cracks, which can retain water. They shall therefore be thoroughly
dried and preheated before coming in contact with liquid metal to avoid the risk of a violent explosion.
5.5 Form of products
There are several possible shapes of ingots, e.g.
trapezoidal which can be stacked. This type of ingot may have one or more notches to enable it to be divided into pieces if required;
— continuously cast material;
— other shapes.
The dimensions and tolerances on dimensions of the ingots and bundles and the variations on the unit masses shall be agreed between supplier and purchaser at the time of ordering.
NOTE A further form of product can be as liquid metal. See also EN 577.
6 Product inspection and testing methods
6.1 Chemical analysis
Sampling shall be canied out at the time of casting according to EN 14361. The average content of each sample shall be within the specification for the chemical composition.
The range of application and accuracy of the test procedure used shall be validated and proved by the supplier.
In the case of dispute concerning chemical composihon, referee analysis shall be carried out in accordance with EN 14242.
NOTE For the fast determinahon of the chemical composition different spectral analysis methods are used (e.g. S-OES, XRF, GDOES). For S-OES. see EN 14726.
6.2 Chemical composition limits
The chemical composition is specified in Table 1. The figures specify the maximum limit as percentage by mass, unless minimum limits are also shown.
NOTE Table 1 also indudes the chemical composiüons of castings. These are shown in brackets where they differ from the ingot limits and are taken from EN 1706.BS EN 1676 pdf download.
