Jan 28, 2016 #2 metengr Materials Oct 2, 2003 15,478 https://icme.hpc.msstate.edu/mediawiki/index.php/Fatigue-life_curve-4130_Steel Upvote 0 Downvote
Jan 28, 2016 #3 tbuelna Aerospace Aug 10, 2002 4,026 You need to provide more specific details of the 4130 material form, quality, loading conditions, etc. A good place to start is MMPDS-01 figures 2.3.1.2.8(a) thru 2.3.1.2.8(h). http://everyspec.com/FAA/FAA-General/download.php?spec=DOT-FAA-AR-MMPDS-01-JAN2003.024102.pdf Upvote 0 Downvote
You need to provide more specific details of the 4130 material form, quality, loading conditions, etc. A good place to start is MMPDS-01 figures 2.3.1.2.8(a) thru 2.3.1.2.8(h). http://everyspec.com/FAA/FAA-General/download.php?spec=DOT-FAA-AR-MMPDS-01-JAN2003.024102.pdf
