Design stress strength and elastic modulus of 16MnR material
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I need to find the elastic modulus and design stress strength of 16MnR(HIC) material at temperatures of 20, 150, 250, 350, 450, and 550 degrees. 16MnR is no longer listed in GB105; it seems to have been merged into Q345R. So should I simply look up the elastic modulus and design stress strength of Q345 material instead? I have also found the design stress strength for Q345R, but not its elastic modulus; I would appreciate it if you could help look that up. Thank you
It is possible to use the allowable stress specified in GB150; if design is carried out according to 4732, then the tolerance factor should be calculated accordingly
The appendix for 150 includes information on elastic modulus, but it is categorized by type of material rather than by grade
Thank you. So, does Q345 belong to the category of carbon steel or carbon-manganese steel?
Refer to the \"Technical Specifications for the Design of Steam and Water Pipelines in Thermal Power Plants DL/T-5054\"; here are some of the values provided: Allowable stress (MPa): at 20, 250, 300, 350, and 400 degrees, the values are respectively 156, 149, 135, 129, and 117. Elastic modulus (KN/mm2): at 20, 200, 250, 350, and 400 degrees, the values are respectively 206, 189, 185, 176, and 171. It cannot be used in applications where the temperature exceeds 400 degrees.
Carbon steel and carbon-manganese steel tend to graphitize when used at temperatures above 425 degrees for an extended period of time; the material chosen by the original poster isn’t suitable
Refer to page 352 of the \"Handbook of Metal Materials for Thermal Power Plants,\" where the physical properties of 16Mng (the old designation for 16MnR) are listed, including the elastic modulus. But what is design stress intensity?