GB/T 33220-2016 English PDF (GBT33220-2016)

This Standard specifies the requirements, order information, materials and manufacturing, chemical composition, state, grain size, physical properties, mechanical properties, heat treatment, dimensions and allowable deviation, process, final processing, appearance and test method of copper-beryllium alloy forgings and extrusions. This Standard applies to copper-beryllium alloy forgings and extrusions whose alloy grades are C17000 (Be content of 1.7%) and C17200 (Be content of 1.9%). The alloys, which are not indicated with the grade, in this Standard, are C17200 copper-beryllium alloys.