Anchor Bolts: A36 or A307?
Anchor Bolts: A36 or A307?
(OP)
AISC 9th, says A307 has a higher Tensile strength, as well as higher allowable tensile and shear loads as compared to A36. I can find neither a Yield strength, nor an Ultimate value for A307. Why?
Other than the slight difference in values, what advantage does one have over the other?
Thank you ...
Other than the slight difference in values, what advantage does one have over the other?
Thank you ...






RE: Anchor Bolts: A36 or A307?
RE: Anchor Bolts: A36 or A307?
RE: Anchor Bolts: A36 or A307?
The ASTM callouts for all thread anchor bolt type stock should be F1554, Gr. 36 or A36.
RE: Anchor Bolts: A36 or A307?
RE: Anchor Bolts: A36 or A307?
RE: Anchor Bolts: A36 or A307?
RE: Anchor Bolts: A36 or A307?
A307- Grade B has tensile strength of 60KSI-100KSI.
A307-Grade C has "properties conforming to" ASTM A36- tensile strength of 58-80 KSI.
Yield is not listed for Grades A and B. There are hardness requirements for Grades A and B, as well as specified tensile requirements for each bolt size.
RE: Anchor Bolts: A36 or A307?
Apparently, as JStephen stated, MOST of the A307 bolts AND threaded rod is made from A36 steel. A307 Gr C, is a recommended specification that simply involves less certificationary paperwork that involves certain testing procedures which, unless required or specified by the engineer, can be avoided, thus costing less and producing virtually the same A307 material specification. Does anyone know anything more, either supporting, or contrary to this alleged claim by Birmingham Fastener?
Apparently, A36 and A307 are available in either threaded rod or headed bolts. AISC is not always accurate or current considering the 9th Ed. is over 15 years old...
We need to check with your local fabricator and national manufacturers to insure that our specifications and intentions compliment what is actually available and what the local fabricator is willing to work with, providing there is room for flexibility.
RE: Anchor Bolts: A36 or A307?
Where did you get your info from? I can't find it in AISC 9th Ed.
RE: Anchor Bolts: A36 or A307?
RE: Anchor Bolts: A36 or A307?
RE: Anchor Bolts: A36 or A307?
RE: Anchor Bolts: A36 or A307?
an A36 steel can be threaded to make a bolt (irregardles of whether there is a head or just a stud) but its properties is still the same which is comparable to A307GrC.
there used to be a specs for threaded round stock (i cant remember) and its also comparable to A36 grade. this was mainly used for non-standard sizes (at present F1554 is being used)
A307 Gr. A are manufactured with specified strength 60ksi to be used for structural connections not requiring high strength bolts while Gr. B are mainly intended for piping flange connections without elevated temp requirements, high strength or environmental requirements.
- structural (design, detailing & fabrication)