BS 2872:1989 pdf download.Copper and copper alloy forging stock and forgings
2 Definitions For the purposes of this British Standard the following definitions apply.
2.1 forging stock extruded, rolled, drawn or cast material intended for the production of forgings, usually in the form of rod or sections
2.2 rod a solid product of round, square, rectangular or regular polygonal cross section, uniform throughout its length, usually supplied in straight lengths, and which if rectangular in cross section has a thickness that exceeds one-tenth of the width
2.3 forging(s) a shape produced by hammering or pressing, usually when hot, between open or closed dies, including hammering between flat surfaces. The term “forging” includes the processes of forging, drop forging, hot stamping, and hot pressing; the term “forgings” includes the products resulting from any of these processes of manufacture
2.4 wrought a material is considered to be wrought when it has been subjected to sufficient mechanical and thermal treatment to eradicate or change substantially the original structure, usually cast
2.5 cast cast material is material which has solidified from the liquid state in a mould, and which has not subsequently been worked to eradicate or change substantially the cast structure
9 Selection of test samples
9.1 General When tests are required to be carried out to verify that a batch of forging stock complies with this standard (see items a) and c) of A.2), samples for chemical analysis and tensile tests shall be taken in accordance with 9.2. NOTE 1 If the supplier of the forging stock is also the producer of the forgings, the requirements of this clause may be dispensed with and those in clause 17 taken to apply. NOTE 2 No sampling requirements for forging stock are specified in this standard for the dezincification resistance test (alloy CZ 132 only). When the purchaser requires this test to be carried out, the sampling requirements should be agreed between the supplier and the purchaser at the time of the enquiry and order (see item c) of A.2).
9.2 Samples for analysis and tensile testing For sampling, the forging stock shall be grouped into the batch sizes (masses) given in Table 7. For each test, i.e. analysis and tensile, one sample shall be taken at random from each batch and from any remaining part of a batch.BS 2872 pdf download.