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ASTM A449
ASTM A449 covers headed bolts, rods, and anchor bolts in diameters ranging from 1/4"" through 3"" inclusive. It is a medium strength bolt manufactured from a medium carbon or alloy steel that develops its mechanical values through a heat treating process. It is intended for general engineering applications.
ASTM A449
Scope
ASTM A449 covers headed bolts, rods, and anchor bolts in diameters ranging from 1/4"" through 3"" inclusive. It is a medium strength bolt manufactured from a medium carbon or alloy steel that develops its mechanical values through a heat treating process. It is intended for general engineering applications.
ASTM A449 is virtually identical in chemistry and strength to ASTM A325 and SAE J429 grade 5. However, A449 is more flexible in the sense that it covers a larger diameter range and is not restricted by a specific configuration.
TYPES
TYPE 1
Plain carbon steel, carbon boron steel, alloy steel, or alloy boron steel.
TYPE 2
Withdrawn 2003
TYPE 3
Weathering steel.
MECHANICAL PROPERTIES
Size
Tensile, ksi
Yield, ksi
Elong. %, min
RA %, min
1/4 - 1
120 min
92 min
14
35
1-1/8 - 1-1/2
105 min
81 min
14
35
1-5/8 - 3
90 min
58 min
14
35
RECOMMENDED NUTS and WASHERS
Nuts
Washers
Plain
Galvanized
1/4 - 1-1/2
1-5/8 - 3
1/4 - 3
Note: Nuts of other grades having proof load stresses greater than the specified grade are suitable. The ASTM A563 Nut Compatibility Chart has a complete list of specifications.
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