GB/T 18254-2016 Translated English of Chinese Standard (GBT 18254-2016, GB/T18254-2016, GBT18254-2016): High-carbon Chromium Bearing Steels [Buy--download True-PDF in 3-second: https://play.google.com/books > Sign in > This BOOK > "3-dots" > Export > Save as "*.pdf"]https://www.chinesestandard.net, 2017/04/29 - 51 ページ This Standard specifies the classification and codes, ordering content, dimensions, shape, technical requirements, test methods, inspection rules, packaging, marking and quality certification of high-carbon chromium bearing steels. |
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10~15 Test surface 60 mm Dimensions accordance with Figure Analysis of Iron annealed carbide network Annealed fracture annealed Hot-rolled bluing fracture carbide band carbide liquation centre porosity centre segregation Chemical Analysis Chromium Bearing Steels cold-drawn round steels Conformity Level Conformity level/grade Content GB/T Decarburized layer diagram in Annex direction 10~15 Test direction Test surface edition Figure C.15 Figure C.9 Forged round steels forging test furnace High-carbon Chromium Bearing high-grade quality steels hot-rolled forged Hot-rolled or forged Hot-rolled round steels Induction Furnace inspection items Level of Carbide Magnification factor 500 Methods for Chemical Microstructure molybdenum nitric acid non-metallic inclusions Oxygen content pattern segregation quality steels Super-grade quenching and tempering Rolling direction 10~15 Rolling direction Test Round wire rods Sampling positions Special Steel specified as follows specified in GB/T specified in Table Standard diagram Steel and Alloy steels Super-grade quality Super-grade quality steels test method Test surface Figure ultrasonic testing