ASTM B819-19,Standard Specification for Seamless Copper Tube for Medical Gas Systems.
This standard was shared by Johnson from Germany.Thanks.
ASTM B819-19 establishes the requirements for two wall thickness schedules of specially cleaned, straight lengths of seamless copper tube, identified as Types K and L, suitable for medical gas systems.
Materials and Manufacture
Material – The materials of manufacture shall be a cast billet of Copper Alloy UNS C12200 of such purity and soundness as to be suitable for processing into the products prescribed herein.
Manufacture -The product shall be manufactured by such hot working necessary to convert the billet to a tubular shape and cold worked to the finished size.
Mechanical Properties
The tube shall conform to the mechanical property requirements specified in Table 2 when tested in accordance with Test Methods El8 and E8/E8M, respectively. Tension test determinations need not be made except when indicated by the purchaser at the time of placing the order. A convenient method of indicating that these tests are to be made is to state that “Test Procedure T” is required (see 4.2. 1).Where agreement on the Rockwell hardness tests cannot be reached,the tensile strength requirements of Table 2 shall be the basis for acceptance or rejection.