Standar for Bolt |
Grade |
Bolt Size |
Tension Stength |
Yield Strength |
Enlogation |
Hardness |
Head Marking |
|
in. |
ksi |
ksi |
% |
Brinell |
Rockwell C |
|||
A354 |
BC |
1/4~2-1/2 |
125min |
109min |
16 |
255-331 |
26-36 |
|
>2-1/2 |
115min |
99min |
16 |
235-311 |
22-33 |
|||
BD |
1/4~2-1/2 |
150min |
130min |
14 |
311-363 |
33-39 |
|
|
>2-1/2 |
140min |
115min |
14 |
293-363 |
31-39 |