316 SS all thread bar. 1

[shin25]

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.

 

[samdamon]

Shin- You probably meant Fu=75 ksi. You can get tech data in general on stainless steel from Nickel Development Institute.

 

[civilperson]

Yes, using a radius greater than a minimum or using heat.

 

[shin25]

samdamon,

It is fy=75 ksi and fu=100 ksi.

 

[samdamon]

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.

 

[btrueblood]

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.

 

[btrueblood]

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.

 

[shin25]

btrueblood,
Thanks, but can you tell me bend radius for 3/4" all thread rod?