BS EN 1563-2011 pdf download.Founding – Spheroidal graphite cast irons.
7.3.3 Hardness
BnneII hardness and its range values for the grades listed in Table 3 shall only be specified when agreed between the manufacturer and the purchaser by the time of acceptance of the order.
Information regarding hardness is given in Annex C.
7.3.4 Graphite structure
The graphite structure shall be mainly of form V and VI in accordance with EN ISO 945-1. A more precise definition may be agreed between the manufacturer and the purchaser.
NOTE 1 A.2.3 gives more information on graphite structure.
NOTE 2 Annex 0 gives more information regarding nodularity.
7.3.5 Matrix structure
Information on matrix structure is given in Table E.1 and A.2.2.
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 relevant wall thickness 60 mm. cast-on samples or side-by-side samples should preferably be used; the dimensions and the location of the sample shall be agreed between the manufacturer and the purchaser by the time of acceptance of the order.
If the spheroidizirig 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 and impact test pieces shall be finally machined from the samples after the heat treatment.
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, 2 or 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 series 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 cast-on samples 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.
8.2.6 Test pieces machined from cast samples
The tensile test piece shown in Figure 5 and, if applicable, the impact test piece shown in Figure 6 shall be machined from a sample shown in Figure 3 or from the hatched part of Figures 1. 2 or 4.
The sectioning procedure for cast samples shall be in accordance with Annex G.
Unless otherwise agreed, the preferred diameter for the test piece shall be used.
8.3 Samples cut from a casting
In addition to the requirements of the material, the manufacturer and the purchaser may agree on the properties required (for information, see Annex B) at stated locations in the casting. These properties shall be determined by testing test pieces machined from samples cut from the casting at these stated locations.
The manufacturer and the purchaser shall agree on the dimensions of these test pieces.
In the absence of any directions by the purchaser, the manufacturer may choose the locations from which to cut the samples and the dimensions of the test pieces
The centreline of the test piece should be located at a point half way between the surface and the centre.
NOTE I When the zone of last solidification in the casting Is included in the test piece diameter, the minimum elongation guidance value may not be obtained.BS EN 1563-2011 pdf download.