Attached are two test reports regarding malleable iron.  The last time this issue was raised, we set up the tests with two goals.  1) Standard pull test per the ASTM specification for qualification of handrails, and 2) An expedient impact test to address specifically the issue Lisa raised, which is shocking the iron with impact. 

The first test was successful to the point that we exceeded test requirements by 600 lbs.  This second test consisted of swinging a 90 lb pendulum into a welded railing from a height of roughly 3’.  As you will see, the pipe took a ferocious beating and there was absolutely no effect of the welded joint nor the brackets.

These brackets were welded using the GMAW process, at 19 volts with a wire feed speed of approximately 225.  Wire diameter was .035, Gas was C-25

1701 Shock Test

1701-2 Casting Horizontal

1701-2 Casting Vertical