GB/T 38820-2020 Translated English of Chinese Standard. (GBT 38820-2020, GB/T38820-2020, GBT38820-2020): Irradiation-resistant and heat-resistant steelshttps://www.chinesestandard.net, 12 sep 2020 - 21 pagina's This standard specifies the terms and definitions, order content, dimensions, shape, weight, technical requirements, test methods, inspection rules, packaging, markings and quality certificates of radiation-resistant heat-resistant steel. This standard applies to hot-rolled and forged bars which has a diameter of not more than 150 mm for the nuclear industry. |
Inhoudsopgave
Inspection rules | 14 |
Packaging marking and quality certificate | 15 |
Appendix A Informative Physical properties of irradiationresistant and heat resistant steel | 16 |
Appendix B Normative Testing method for neutron radiation performance | 17 |
Veelvoorkomende woorden en zinsdelen
absorption energy value allowable deviation analysis of iron bar shall meet bar’s specimen blank bars is judged bars shall comply bars that failed batch of steel Brinell hardness chemical analysis content GB/T cooling after heat cubic centimeter Designation Code Figure B.4 heat preservation heat-resistant steels impact absorption energy impact specimen impact test inspection and acceptance inspection items Iron steel irradiated material irradiation-resistant and heat-resistant judged as unqualified macrostructure martensite meet the requirements Methods for chemical molybdenum NB/T physical properties Poisson’s ratio provisions of GB/T Qualified level quantity and sampling requirements of Table sampling location sampling quantity shock absorption energy specimen before irradiation spectrophotometric method GB/T standard steel and alloy Steel and iron steel bar’s specimen steel bars steel GB/T Surface quality tantalum tensile specimen tensile strength Tensile testing Test method GB/T Test temperature Thermal conductivity Thermal diffusivity tungsten type inspection Ultrasonic testing unirradiated specimen Vickers hardness YB/T yield strength