- Technology Driven, High Performance Fasteners
- Sonipat, Haryana India
- sales@bigboltnut.com
ASTM A 354
ASTM A354 covers the chemical and mechanical requirements of quenched and tempered alloy steel bolts, studs, and other externally threaded fasteners 4” and under in diameter. Two strength levels, grades BC and BD are summarized below. This specification is unrestricted in its configuration and can be a headed bolt, bent bolt, or threaded rod.
ASTM A354 Grades
| BD |  |
Grade BD bolts are higher in strength than grade BC, and equal in strength to ASTM F3125 grade A490 bolts. Unlike A490 however, the A354 standard is unrestricted in its configuration. Also, since A490 bolts are for structural use and do not exceed 1-1/2” in diameter, A354 grade BD should be considered for anchor bolts, threaded rods, other styles of headed bolts, and bolts larger than 1-1/2” diameter where similar mechanical properties are desired. A354 grade BD does not require a magnetic particle test like A490, except when called out as a supplemental requirement. |
| BC |  |
Lower in strength than BD. Should be considered in lieu of F3125 grade A325 bolts when configuration and size conflicts occur with A325 as described above for grade BD and A490 bolts. |
ASTM A354 Chemical properties
|
Property class |
Chemical composition % |
|||||||||
|
C. |
Mn. (min) |
Si. |
P. (max) |
S.(max) |
Cr.(min) |
Ni. (min) |
Mo.(min) |
B. (max) |
Ti. |
|
|
All s of Grade BC, Grade BD through 2-1/4” diameter. |
0.30-0.53 |
0.60 |
- |
0.035 max. |
0.040 max. |
- |
- |
- |
0.003 |
- |
|
Grade BD over 2-1/4” |
0.30-0.53 |
0.60 |
- |
0.035 max. |
0.040 max. |
0.40 |
0.40 |
0.15 |
0.003 |
- |
ASTM A354 Mechanical properties
|
Grade |
Size |
Tensile, ksi, min |
Yield, ksi, min |
Elong %, min |
RA %, min |
Hardness, HRC |
|
BC |
1/4 - 2-1/2 |
125 min |
109 |
16 |
50 |
26 - 36 |
|
Over 2-1/2 |
115 min |
99 |
16 |
45 |
22 - 33 |
|
|
BD |
All Sizes |
150 - 173 |
130 |
14 |
40 |
33 - 38 |
ASTM A354 Marking
|
Grade |
Marking Details |
|
BC |
Grade BC Bolts are marked or stamped with “354BC” along with RFL logo or as per customer need. |
|
BD |
Grade BC Bolts are marked or stamped with “354BD” along with RFL logo or as per customer need. |