Allowable stresses for A320 SS bolts?
Allowable stresses for A320 SS bolts?
(OP)
I am looking confirmation for my calculation of the allowable stresses for ASTM A320, Grade B8 stainless steel bolts. I think I have figures out that ASTM A320, Grade B8 is similar to UNS deisngation 304 for stainless steel.
From that, I went into the ASCE 8-02 publication, "Specification for the Design of Cold-Formed Stainless Steel Structural Members." In there, they list the safety factor for bolts of 3. Table 6 gives nominal shear and tensile stresses. Using these, I came up with the following:
Ft = 56 ksi / 3 = 18.0 ksi
Fv = 45 ksi / 3 = 15.0 ksi (no threads in shear plane)
Fv = 33.7 ksi / 3 = 11.2 ksi (threads in shear plane)
Can anyone out there with any stainless steel bolt experience confirm these numbers for me? Thanks.
From that, I went into the ASCE 8-02 publication, "Specification for the Design of Cold-Formed Stainless Steel Structural Members." In there, they list the safety factor for bolts of 3. Table 6 gives nominal shear and tensile stresses. Using these, I came up with the following:
Ft = 56 ksi / 3 = 18.0 ksi
Fv = 45 ksi / 3 = 15.0 ksi (no threads in shear plane)
Fv = 33.7 ksi / 3 = 11.2 ksi (threads in shear plane)
Can anyone out there with any stainless steel bolt experience confirm these numbers for me? Thanks.






RE: Allowable stresses for A320 SS bolts?
Check http://www.americanfastener.com/techref/grade.htm
HTH
Regards
VOD
RE: Allowable stresses for A320 SS bolts?
Anyway, your numbers seem to be in the ball park from what I've seen.