ASTM-B280:2020 pdf free download – Standard Specification for Seamless Copper Tube for Air Conditioning and Refrigeration Field Service.
4.1.8 Quantity (total pieces of each size and type): and
4.1.9 When product purchased for agencies of the U.S. Government (Section 12).
4.2 The following options are available and shall he specified in the contract or purchase order when required:
4.2.1 Tensile test (Section 9):
4.2.2 Expansion test (Section 10.1):
4.2.3 Cleanness test (Sections 10.2 and 18.2.4);
4.2.4 Microscopical Examination for Hydrogen Embrittlement, Procedure B (10.3.2):
4.2.5 Certification (Section 22); and
4.2.6 Test report (Section 23).
5. Materials and Manufacture
5.1 Materials—The material of manufacture shall be billets. bars, or tube and shall he of such soundness as to he suitable for processing into the tubular products described.
5.2 Manufiwiure:
5.2.1 The tube shall he manufactured by such hot or cold working processes as to produce a homogeneous uniform wrought structure in the finished product. The tube shall be cold drawn to the finished size and wall thickness.
5.2.2 Coiled lengths specified 060. soft annealed temper. or
062. heavy anneal temper. shall be bright annealed after coiling, then dehydrated. and capped. plugged. crimped, or otherwise closed at both ends so as to maintain the internal cleanness of the tubing under normal conditions of handling and storage.
5.2.3 Straight lengths specified H55 light drawn or H58 drawn general purpose shall be cleaned and capped, plugged, or otherwise closed at both ends so as to maintain the internal cleanness of the tubing under normal conditions of handling and storage.
6. Chemical Composition
6.1 The chemical composition shall conform to the chemical requirements in Table 3 for the specific type of copper.
6.1 .1 These limits do not preclude the presence of other elements. When included in the contract or purchase order, and agreed upon by the manufacturer or supplier and the purchaser. limits shall be established and analysis required for unnamed elements.
7.1 Product under this specification shall be furnished in 060 (soft annealed), 062 (heavy anneal), H55 (light drawn), or H58 (drawn general purpose) temper, as specified in the contract or purchase order and defined in ClassitIcaüon B601.
8. Grain Size
8.1 Coiled lengths in the 060 temper shall have a recrystallized grain size of 0.040 mm minimum when determined in accordance with Test Methods El 12. 062 allows a maximum grain size of 0.050 mm.
9. Tensile Requirements
9.1 The tube shall conform to the tensile requirements prescribed in Table 4.
9.2 Tensile tests need not he performed except when specified in the contract or purchase order.
10. Performance Requirements
10.1 Expansion Test:
10.1.1 Tube furnished in the 060 soft annealed or 062 heavy anneal temper shall be capable of being expanded in
accordance with Test Method B153 to the following extent:
10.1.1.1 The expanded tube shall show no cracking or other defects visible to the unaided eye.
10.1.2 Unless specified in the contract or purchase order, this test is not required to be performed by the manufacturer.