GB/T 38809-2020 Translated English of Chinese Standard. (GBT 38809-2020, GB/T38809-2020, GBT38809-2020): General Specification for Low Alloy Ultra-high Strength SteelsThis Standard specifies the order content, dimensions, shape, weight, technical requirements, test methods, inspection rules, packaging, marking and quality certificate of low alloy ultra-high strength steels. This Standard is applicable to rolled or forged low alloy ultra-high strength steel bars. The designation and chemical composition specified in this Standard are also applicable to steel ingots, billets or their products. |
Common terms and phrases
40CrNi2Si2MoVA A B A C acid leaching alloy ultra-high strength Annealing Normalizing Arc Re-melting Annealing Arc Re-melting Vacuum Average frequency bars shall comply bars shall receive bars whose nominal blank shall comply Coarse Fine Coarse decarburized layer Defects of Steel demand-side’s demands Designation and Chemical Designation and Code Different steel bars dimension is larger Dimension of Steel Electroslag Re-melting finer Nominal dimension Grain Size Heat Preservation Induction and Vacuum Level-5 or finer Level-A Level-A Level-A low alloy ultra-high magnetic marks Magnetic Particle Inspection Marking and Quality mechanical properties minimum cutting amount Non-metallic Inclusions Oil Cooling PCS/furnace Different steel PCS/furnace GB/T permissible tolerances Qualification Level Quality Certificate Re-melting Vacuum Induction sample billet roughly sample blank Smelting Method Standard Steel and Alloy Steel Designation steel ingot stipulations of GB/T stipulations of Table surface of steel temperature Tempering Test Method Tolerances of Chemical tower-shaped samples Ultra-high Strength Steels Ultrasonic Testing Vacuum Arc Re-melting Xi’an