ASTM-B43:2020 pdf free download – Standard Specification for Seamless Red Brass Pipe, Standard Sizes.
7.3 In the (annealed) temper, the degree of annealing shall be suflicient to produce complete recrystallization with an average grain size not in excess of 0.050 mm.
8. Mechanical Property Requirements
8.1 Product furnished tinder this specification shall conform to the tensile, yield, and elongation requirements (where required) prescribed in Table 2, when tested in accordance with Test Methods E8/E8M.
9. Performance Requirements
9.1.1 Specimens in the 061 (annealed) temper shall withstand an expansion of 25 % of the outside diameter when expanded in accordance with Test Method B 153. The expanded pipe shall show no cracking or rupture visible to the unaided eye. Pipe ordered in the drawn (H) condition is not subject to this test.
Note I—The term ‘unaided eye,” as used herein, pennits the use of corrective spectacles necessary to obtain normal vision.
9.1.2 As an alternative to the expansion test for pipe over
4 in. (102 mm) in diameter in the 061 (annealed) condition, a flattening test in accordance with Test Method B968/B968M shall be performed.
9.2 Residual Stress Test.
9.2.1 When specified in the contract or purchase order, product of the 061 (annealed) shall be tested for residual stress according to the requirements of Test Method Bl54 or Test Method B858, and show no signs of cracking.
Warning—Mercury is a definite health hazard. With the Mercurous Nitrate Test, equipment for the detection and removal of mercury vapor produced in volatilization, and the use of protective gloves is recommended.
Note 2—A residual stress test provides information about the adcquacy of the stress relief of the material. Tube straightening is a method of mechanical stress relief. Stress relief annealing is a method of thermal stress relief.
10. Other Requirements
10. 1 Nondestructive Testing—The material shall be tested in the final size but is permitted to be tested prior to the final anneal or heat treatment, when these thermal treatments are required. unless otherwise agreed upon by the manufacturer or supplier and purchaser.
10.2 Eddy-Current Test—Each piece of material from ½ in. up to and including 2½ in. nominal outside diameter or within the capabilities of the eddy-current tester, shall be subjected to an eddy-current test. Testing shall follow the procedures of Practice E243 except for determination of “end effect.” The material shall be passed through an eddy-current testing unit adjusted to provide information on the suitability of the material for the intended application.
10.2.1 Notch-depth standards rounded to the nearest
0.001 in. (0.025 mm) shall be 10 % of the nominal wall thickness. The notch depth tolerances shall be ±0.0005 in. (0.013 mm). Alternatively, when a manufacturer uses speed insensitive equipment that allows the selection of a maximum imbalance signal, a maximum imbalance signal of 0.3 % is permitted to be used.
10.2.2 Material that does not actuate the signaling device of the eddy-current test shall be considered as conforming to the requirements of this test. Material with discontinuitics indicated by the testing unit is permitted to be reexamined or retested, at the option of the manufacturer, to determine whether the discontinuity is cause for rejection. Signals that are found to have been caused by minor mechanical damage. soil or moisture shall not be cause for rejection of the material provided the dimensions of the material are still within prescribed limits and the material is suitable for its intended application.