GBT_9439-2010__灰铸铁件_英文版

1、GB/T 9439-2010灰铸铁件L ScopeThis standard specifies the terms and definition, designation,technology requirements, sampling requirements, tests method,inspection nilcs of grey cast iron and the casting identification,packaging storage and transportation requirements.2. Normative references3. Terms and

2、definitionsGB T 5611 determine the terms and the following terms anddefinitions arc applicable to the standardRelevant wall thicknessRelevant wall thickness is point to casting fracture surfacethickness of used to decide the mechanical properties, have to beagreed between the manufacturer and the pu

3、rchase匚4. Grey cast iron designationThe material designation representation of the standard, shall bein accordance with the requirements of GB/T 5612.The standard according to the measured inminimum tensile strength value of machined fromseparately cast test-bar diameter of 30 mmstandard tensile sam

4、ples, grey cast iron will to bedivided into HT100,HT150,HT200, HT225, HT250,HT275, HT300,and HT350 eight grades, see table1.Table 1 the designation and mechanical property ofgrey cast ironDesignationCasting wallthicknessminiTensile strengthanticipated values incasting ?z/(min)separately castTest Sample MPaAttaHT100540100- -HT150510150- 1551020- 1302040121104080119580150108015