BS EN 16124-2011 pdf download.Founding Low-alloyed ferritic spheroidal graphite cast irons for elevated temperature applications.
3.6
cast-on sample
sample attached directly to the casting
3.7
relevant wall thickness
wall thickness representative of the casting, defined for the determination of the size of the cast samples to which the mechanical properties apply
4 Designation
The material shall be designated either by symbol or by number as given in Table 1.
NOTE The designation system is in accordance with EN 1560 131.
In the case of samples cut from the casting, the letter C is added at the end of the designation by symbol. 5 Order information
The following information shall be supplied by the purchaser
a) the number of this European Standard;
b) the designation of the material;
c) the relevant wall thickness of the casting;
d) any special requirements.
All requirements shall be agreed between the manufacturer and the purchaser by the time of acceptance of the order, e.g. technical delivery conditions according to EN 1559-1 and EN 1559-3.
6 Manufacture
Unless otherwise specified by the purchaser, the method of manufacture of low-alloyed ferritic spheroidal graphite cast irons and any heat treatment required to obtain the specified mechanical properties and microstructure shall be left to the discretion of the manufacturer.
The manufacturer shall ensure that the requirements defined In this European Standard are met for the material grade specified in the order.
All agreements between the manufacturer and the purchaser shall be made by the time of acceptance of the order.
8 Sampling
8.1 General
Samples shall be made from the same material as that used to produce the casting(s) which they represent.
Several types of samples (separately cast samples, cast-on samples, side-by-side cast samples. samples cut from a casting) can be used, depending on the mass and wall thickness of the casting.
When relevant, the type of sample should be agreed between the manufacturer and the purchaser. Unless otherwise agreed the choice of the option is left to the discretion of the manufacturer.
When the mass of the casting exceeds 2 000 kg and its thickness exceeds 60 mm, cast-on samples should preferably be used; the dimensions and the location of the cast-on sample shall be agreed between the manufacturer and the purchaser by the time of acceptance of the order.
If the spheroidizing treatment is carried out in the mould (in-mould process), the separately cast sample should be avoided.
All samples shall be adequately marked to guarantee full traceability to the castings which they represent.
The samples shall be subject to the same heat treatment, as that of the castings they represent, if any.
Tensile test pieces shall be finally machined from the samples after the heat treatment.
The samples for chemical analysis shall be cast in a manner which ensures that the accurate chemical composition can be determined.
Due to post inoculation treatments, slight differences regarding the silicon content may be admitted.
8.2 Cast samples for tensile testing
8.2.1 Size of cast samples
The size of the sample shall be in correspondence with the relevant wall thickness of the casting as shown in Table 3.
If other sizes are used, this shall be agreed between the manufacturer and purchaser.
8.2.2 Frequency and number of tests
Samples. representative of the material, shall be produced at a frequency ri accordance with the process quality assurance procedure adopted by the manufacturer or as agreed with the purchaser.
In the absence of either a process quality assurance procedure oi any agreement between the manufacturer and the purchaser, a minimum of one cast sample for the tensile test shall be produced to confirm the material grade, at a frequency to be agreed between the manufacturer and the purchaser.
8.2.3 Separately cast samples
The samples shall be cast separately in sand moulds and under representative manufacturing conditions.
The moulds used to cast the separately cast samples shall have comparable thermal behaviour to the moulding material used to cast the castings.
The samples shall meet the requirements of either Figures 1. 2 or 3.
The samples shall be removed from the mould at a temperature similar to that of the castings.
8.2.4 Side-by-side cast samples
Side-by-side cast samples are representative of the castings concurrently cast and also of all other castings of a similar relevant wall thickness from the same test unit.
When mechanical properties are required for a series of castings belonging to the same test unit, the side-by- side cast sample(s) shall be produced in the last mould(s) poured.
The samples shall meet the requirements of either Figures 1, 2or 3.
8.2.5 Cast-on samples
Cast-on samples are representative of the castings to which they are attached and also of all other castings of a similar relevant wall thickness from the same test unit.
When mechanical properties are required for a senes of castings belonging to the same test unit, the cast-on sample(s) shall be produced in the last mould(s) poured.
The sample shall have a general shape as indicated in Figure 4 and the dimensions shown therein.
The location of the cast-on sample shall be agreed between the manufacturer and the purchaser by the time of acceptance of the order, taking into account the shape of the casting and the running system, in order to avoid any unfavourable effect on the properties of the adjacent material.BS EN 16124-2011 pdf download.