BS EN 1676-2010 pdf download.Aluminium and aluminium alloys Alloyed ingots for remelting Specifications.
Ingot for remelting
metal cast into a form suitable for remelting which has been processed, as appropriate, to adjust the chemical composition and to remove certain metallic or non-metallic impurities
[EN 12258-1:1998, 3.4.2]
3.6
casting
unwrought product at or near finished shape, formed by solidification of the metal In a mould
[EN 12258-1:1998, 3.5.1]
3.7
melt
quantity of molten metal that has simultaneously undergone the same preparatory treatment in the furnace before the casting operation
[EN 12258-1:1998, 6.1.3]
3.8
order document
document or set of documents to which supplier and purchaser agreed at the time of ordering
NOTE An order document may be an order of the purchaser confirmed by the supplier or a quotation of the supplier confirmed by the purchaser.
4 Ordering information
The order document shall define the product required and shall contain the following inforn,ation:
a) designation of the aluminium alloy according to this European Standard (or the purchaser code after agreement between the supplier and the purchaser):
b) form of the product;
C) quantity:
1) mass (in metric tonnes):
2) tolerance quantity, if required:
d) any requirements for certificates of conformity, test and/or analysis reports or inspection certificates:
e) any additional requirements agreed between the supplier and the purchaser, such as metallurgical structure, samples, delivery details, etc.
5 Requirements
5.1 Production and manufacturing processes
Unless otherwise specified in the order document, the production and manufacturing processes shall be left to the discretion of the producer.
Unless it is explicitly stated in the order document, no obligation shall be placed on the manufacturer to use the same processes for subsequent and similar orders. However, the supplier should inform the purchaser of any change that may affect the quality of the ingots or the final products.
5.2 Quality control
The supplier shall be responsible for carrying out all inspection and tests required by the relevant European Standard andlor the particular specification, prior to shipment of the product. If the purchaser wishes to inspect the product at the supplier’s worls, he shall stipulate this at the time of placing the order.
5.3 Chemical composition
Each grade of alloyed aluminium ingot for remelting shall be in accordance with the designations and chemical composition specified in Table 1.
NOTE For unalloyed aluminium ingots. see EN 576.
For alloys that are not in Table 1, the writing rules for designations and chemical compositions, as specified in EN 1780-1, EN 17802 and EN 1780-3, shall be applied.
If the purchaser requires content limits for elements not specified In this European Standard, these limits shall be stated on the order document, after agreement between supplier and purchaser.
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 mateial; other shapes.
The dimensions and tolerances on dimensions of the ingols 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 carried 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 composition, referee analysis shall be carried out in accordance with EN 14242.
NOTE For the fast determination 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 includes the chemical compositions of castings. These are shown in brackets where they differ from the ingot limits and are taken from EN 1706.BS EN 1676-2010 pdf download.