BS EN 10028-1:2008 pdf free download – Flat products made of steels for pressure purposes- Part 1: General requirements.
Examples of ordering are given in the relevant Part 2, 3, 4, 5, 6 or 7 of this European Standard.
8 Requirements
8.1 Steelmaking process
8.1.1 .. Unless a special steelmaking process has been agreed at the time of enquiry and order, the steelmaking process shall be left at the discretion of the manufacturer.
8.1.2 Steels other than stainless steels shall be fully killed.
8.2 Delivery condition
See the individual parts of EN 10028 (see also 3.1 to 3.3).
8.3 Chemical composition
8.3.1 Cast analysis
The cast analysis reported by the steel producer shall apply and comply with the requirements of the individual parts of EN 10028.
8.3.2 Product analysis
The permissible product analysis tolerances on the limiting values given for the cast analysis are specified in the
individual parts of EN 10028.
8.4 Mechanical properties
8.4.1 The values given in the individual parts of EN 10028 apply for test pieces taken and prepared in accordance with 10.2.2. The values relate to the nominal thickness (thickness on ordering) of the products and apply to the usual delivery conditions (see the specific parts of EN 10028).
..Agreement shall be reached, where appropriate, at the time of enquiry and order about the mechanical properties to be adhered to after additional heat treatment.
8.4.2 . For products (except products made of stainless steels) of thickness 15 mm and above, it may be agreed at the time of enquiry and order to meet the requirements of one of the quality classes Z 15, Z 25, or Z 35 as specified in EN 10164:2004 characterized by minimum values for the reduction of area perpendicular to the product surface.
8.5 Surface condition
For plates, the requirements of surface quality as specified in EN 10163-2:2004 shall apply as follows:
a) class B2 for plates in accordance with EN 10028-2 to -6;
b) class B3 for plates in accordance with EN 10028-7,.
8.6 Internal soundness
The products shall be sound and free from defects that preclude their intended use.
. Where appropriate, requirements together with the conditions for their verification may be agreed at the time of enquiry and order (see Table 1 and 11.5.3).
10.1.2 The test unit for the tensile test at room temperature and the impact test shall be as follows:
— for strip and sheet cut from strip: the coil;
— for sheet or plate: the rolled plate.
If a rolled plate or a coil is split up into several heat treatment batches for liquid quenching, then each individual heat treatment batch shall be regarded as a test unit. One sample shall be taken for preparing the test pieces indicated in 10.2.2 from each test unit.
10.1.3 .. For tensile tests at elevated temperature, unless otherwise agreed, the test unit shall be the cast.
10.2 Selection and preparation of samples and test pieces
10.2.1 Sampling and sample preparation
10.2.1.1 Sampling and sample preparation shall be in accordance with the requirements of EN ISO 377, EN ISO 14284 and Table 2. In addition, the requirements in 10.2.1.2 and, if applicable, 10.2.1.3 shall apply for sampling and sample preparation for the mechanical tests.
10.2.1.2 The samples shall be taken at 1/4 product width (see Table 2) for the tensile test at room temperature, the impact test and the tensile test at elevated temperature. In the case of strip, the samples shall be taken at a sufficient distance from the end of the strip.
NOTE If samples have to be taken from the mid-width position in accordance with the requirements for through-thickness testing as specified in EN 10164, the samples to be taken as specified in 10.2.1.2 may also be taken from there except in cases of arbitration.
10.2.1.3 . If, following agreement at the time of enquiry and order, the products is not to be delivered in the usual delivery condition, the samples shall be treated to the usual delivery condition prior to the test.