GB/T 38960-2020 Cryogenic-resistant controlled expansion alloys

Scope: This standard specifies the order content, classification and code name, size, shape, weight, technical requirements, test methods, inspection rules, packaging, marks and quality certificates of low-temperature resistant iron-nickel-chromium-based fixed expansion alloys. This standard applies to the field of space optoelectronics. The iron-nickel-cobalt-based fixed-expansion alloy 4J329D rods, flats, and strips that are matched or sealed with semiconductors and hard glasses in the semiconductor industry and other harsh deep-low temperature application environments , Wire and pipe (hereinafter referred to as alloy material).

GB/T 11170 Stainless steel .Determination of multi-element contents.Spark discharge atomic emission spectrometric method (Routine method)
GB/T 14985 General rules of dimensions,shape,surface,quality,testing method and inspection for expansion alloys
GB/T 228 Metallic materials--Tensile testing at ambient temperature
GB/T 2975 Steel and steel products.Location and preparation of samples and test pieces for mechanical testing
GB/T 4162 Method for ultrasonic testing of forged and rolled steel bars*， 2022-04-15 Update
GB/T 4339 Test methods for thermal expansion characteristic parameters of metallic materials
GB/T 5777 Automated full peripheral ultrasonic testing of seamless and welded (except submerged arc-welded) steel tubes for the detection of longitudinal and/or transverse imperfections
GB/T 6394 Determination of estimating the average grain size of metal
GB/T 8651 Flaw detection method by the ultrasonic plate wave for metal plates
YB/T 5242 General rules of packaging, marking and quality certification for precision alloys

GB/T 38960-2020Cryogenic-resistant controlled expansion alloys