How far can we say that "All My Sons" is a tragedy?

All My Sons does include some tragic elements such as conflict, need to assign blame and a tragic flaw within the main character, although the moment the tragic hero makes a wrong choice and creates his flaw outside the confines of the play, his choice to send out faulty parts. Conflict occurs every couple of pages within the play separated by a false happiness, for example when Joe and Chris are arguing when Kate walks in and they play happy families again. The need to assign blame is the most prominant tragic element within the play as it is used as a basis to start from. George's presence in the play is only caused by his need to assign blame on Joe and Blame brings the play to a tragic end.
When first looking at the play it doesn't seem very tragic until the very end when the protagonist meets his tragic end but when the play is analysed more carefully it becomes plain to see that it is a subtle tragedy, just because tragedy isn't leaping off the page, like Hamlet, it doesn't mean that it isn't there.
The main flaw with the play as a tragedy is that Joe Keller doesn't seem to quite fit the bill of "tragic hero" but this may be what Miller was aiming for. As a "man among men" Joe Keller's problems dont seem as tragic as those of kings and princes of which we are used to in our tragic texts. But from this suburban view his problems are larger and far more tragic than the "everyday man".
  

All My Sons - Act one Reading Journal

The intricate detailed description of the set before the play has even begun suggests that its arrangement has some importance. The poplar trees offer some seclusion to the scenes as if the Keller’s are attempting to hide something, also the form of poplar trees offers an almost military pattern to the trees which could reflect on the recent war and its importance within this play. The description of the fallen tree could also have some significance; it is described as its “fruit still clinging to its branches”. This tree is used as a device to represent Larry, the fallen son, the significance of its fruit still clinging to its branches even though its been struck down could resemble how Larry’s mother, Kate, still clings to the idea of Larry being alive even though he has fallen.

The Keller’s have Sue and Jim on one side of their garden and Frank an Lydia on the other side  the two couples are almost complete opposites of each other Frank and Lydia seem flirty and naive whereas Sue and Jim seem slightly bitter and generally savvier. These two couples are a complete contrast of one another yet their problems are completely normal which makes the Keller's stand out from them both.

Sorry, this is yet to be finished.