huangyhg

316 ss all thread bar.
i am in a situation where i have to install 316 stainless steel all thread bar, fy=75 ksi vertically in a concrete slab. but for some unavoidable reasons i have to field bend after installation about 10 degrees from the vertical axis.
my question is, can this kind of bars can be bent the way i am suggesting?
thanks in advance.

shin- you probably meant fu=75 ksi. you can get tech data in general on stainless steel from nickel development institute.
yes, using a radius greater than a minimum or using heat.
samdamon,
it is fy=75 ksi and fu=100 ksi.
shin- refs i have here say fy (.2% offset) for aisi 316 is 30 ksi, fu=75 ksi, if its an annealed steel. if not annealed you can get fy/fu = 50/90 minimum. i always assume the lower values as a precaution. i could be wrong (wouldn't be the first time), but where did you get your numbers? regards.
astm a193, grade b8m (type 316), and b8mn (type 316n), in strain-hardened condition (class 2), have yields of 96 ksi for 3/4" and smaller diameters, 80 ksi for 3/4 to 1" diameter, 65 ksi for 1 to 1-1/4, and 50 ksi for over 1-1/4 to 1-1/2 diameter.
oh, but don't heat it in the strain hardened condition, it will lose strength. its elongation capability in the full-hard condition is probably around 8 or 9%, based on numbers for type 301; so find a bend radius that keeps the maximum fiber stress in plastic bending well below that, and it should be fine.
btrueblood,
thanks, but can you tell me bend radius for 3/4" all thread rod?

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