1 Yield strength is the lowest stress that produces a permanent deformation in a material. 2  In some materials, like aluminium alloys, the point of yielding is difficult to identify, thus it is usually defined as the stress required to cause 0.2% plastic strain. 3  This is called a 0.2% proof stress.
This year's deadline to file your personal income tax return is midnight on May 5 â five days later than the usual Apr. 30 cutoff. You can thank that nasty Heartbleed computer bug for the extension, after it forced the Canada Revenue Agency to shut down its E-File system earlier in April.his year's deadline to file your personal income tax return is midnight on May 5 â five days later than the usual Apr. 30 cutoff. You can thank that nasty Heartbleed computer bug for the extension, after it forced the Canada Revenue Agency to shut down its E-File system earlier in April.
It is generally subject to the same April 15 deadline. If you need to file a Form 1120, you must file it by the 15th day of the third month following the close of the tax year, which for most taxpayers is March 15. You cannot send this form to the IRS with your personal income tax return.t is generally subject to the same April 15 deadline. If you need to file a Form 1120, you must file it by the 15th day of the third month following the close of the tax year, which for most taxpayers is March 15. You cannot send this form to the IRS with your personal income tax return.