Variation in A449 bolt tensile strength.
Variation in A449 bolt tensile strength.
(OP)
Does the tensile strength of A449 bolts vary by diameter? I know that you use a different tensile strength to design bolts 1" and under than you do for 1 1/2" to 1 3/4".
For example, when designing 1 3/4" diam. to 3" diam bolts you based the design on a minimum tensile strength of 90 ksi. However would a 2" diam bolt have the same minimum tensile strength as a 3" bolt?
For example, when designing 1 3/4" diam. to 3" diam bolts you based the design on a minimum tensile strength of 90 ksi. However would a 2" diam bolt have the same minimum tensile strength as a 3" bolt?





RE: Variation in A449 bolt tensile strength.
I don't have a copy of ASTM A 449 handy, but it should be referenced in this specification as to the variability in mechanical properties as a function of product form size. If it is not mentioned in this specification, you are permitted to use the same value.
RE: Variation in A449 bolt tensile strength.
The answer to your last question is yes. The ASTM standard uses the abbreviation incl. to mean inclusive, so that the entire range of 1 3/4" to 3" has the same requirements for hardness and strength: 183-235 HB and 90 ksi respectively.
RE: Variation in A449 bolt tensile strength.
RE: Variation in A449 bolt tensile strength.