These specs are used when a heat treated alloy bolt is required, these specs can be used in any form of bolt, Headed Bolt, Anchor Bolt (threaded each end or fully threaded) or bent bolt。 A354BD is very similar to A490。
A354 grade BD bolts are higher in strength than A354 grade BC and equal in strength to ASTM A490 bolts. Unlike ASTM A490 however, the A354 BD specification is unrestricted in its configuration. Since A490 bolts are heavy hex structural bolts and do not exceed 1-1/2″ diameter, specification A354 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 as is required by the A490 specification.
|Element||Sizes 1/4 to 1-1/2||Sizes above 1-1/2|
|Carbon||0.30 – 0.53%||0.35 – 0.53%|