ASTM B749-14 pdf download.Standard Specification for Lead and Lead Alloy Strip, Sheet, and Plate Products.
10. Sampling
10.1 A lot shall not exceed 10 000 lb (4540 kg). A lot for alloys requiring mechanical testing shall be further limited to the sheet having the same total material reduction and heat treatment (as required) cycles from the same manufacturing or smelting heat.
10.1.1 Identification—All material shall be identified by lot number. Where material cannot be identified by heat, a lot shall consist ofnot more than 1000 lb (454 kg) in the same thickness and condition, except for plates weighing over 1000 lb, in which case the one piece shall constitute the lot.
10.2 Test Material Selection:
10.2.1 Chemical Analysis—Representative samples shall be taken either during pouring the casting prior to working or during subsequent processing, such as rolling or cutting.
10.2.1.1 Where required, a product (check) sample shall be taken and supplied to the purchaser. The analysis ofthe product sample is the responsibility of the purchaser.
10.2.2 Mechanical Properties—Samples of the material to provide test specimens for mechanical properties, hardness, and grain size shall be taken from such locations in a lot as to be representative of that lot. 10.3 Number ofTests: 10.3.1 Chemical Analysis—One test per lot. 10.3.2 Hardness—One test per lot.
10.3.3 Grain Size—One test per lot.
11. Specimen Preparation
11.1 Tension test specimens, if required, shall be taken in the direction of rolling from the material in the final condition ofrolling and heat treatment or in the case ofcontinuously cast sheet in the casting direction and “as cast”’ state.
11.1.1 Tension test specimens shall be any ofthe standard or subsize specimens shown in Test Methods E8.
11.2 Hardness test specimens ifrequired shall be taken from the material in the final condition of rolling and heat treatment. Tests shall use Rockwell “R” scale or 10 mm ball and 100 kg load Brinell test. 11.2.1 The minimum thickness of a sample for hardness testing shall be 10 times the depth of the impression. All hardness tests must be obtained within 24 h after the final processing for use. 12. Test Methods
12.1 The following test methods for determining chemical composition, mechanical properties, and other properties ofthe material shall be determined in cases of disagreement in accordance with the following methods:
12.1.1 Chemical Analysis—Methods E37 and E87.
12.1.2 Tension—Test Methods E8.
12.1.3 Hardness:
12.1.3.1 Rockwell “R” and Test Methods E18.
12.1.3.2 Brinell and Test Method E10.
12.1.4 Grain Size—Methods E112.
13. Inspection
13.1 Inspection ofthe material shall be made as agreed upon by manufacturer and purchaser as part ofthe purchase contract.
14. Rejection and Rehearing
14.1 Material not conforming to any part of this specifica- tion or to authorized modifications, will be subject to rejection of the entire lot of material. 14.2 Retests for mechanical properties shall be permitted if performed within one week of final processing for use.
14.3 Independent Tests—In the event of a dispute arising as to the compliance ofthe lead alloy strip, sheet, or plate with the requirements set forth in this specification, the purchaser may require the submission of product (check) samples to an independent laboratory for testing. The costs of such testing shall be borne by the purchaser.ASTM B749 pdf download.