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    작성일 : 13-12-11 21:16
    ASTM F1554
     글쓴이 : 관리자
    조회 : 5,211  
    ASTM F1554
     
    Scope
     
    The ASTM F1554 specification was introduced in 1994 and covers anchor bolts designed to anchor structural supports to concrete foundations. F1554 anchor bolts can take the form of either headed bolts, straight rods, or bent anchor bolts. The three grades 36, 55, and 105 designate the minimum yield strength (ksi) of the anchor bolt. The bolts can be either cut or roll threaded and a weldable grade 55 can be substituted for grade 36 at the supplier’s option. Color coding on the end - 36 blue, 55 yellow, and 105 red – helps facilitate easy identification in the field. Permanent manufacturer and grade marking is allowed under the S2 supplementary requirements.
    Applications for F1554 anchor bolts include columns in structural steel framed buildings, traffic signal and street lighting poles, and overhead highway sign structures to name just a few.

    Grades

    F1554 Grade 36 Low carbon, 36 ksi yield steel anchor bolts
    F1554 Grade 55 High strength, low alloy, 55 ksi yield steel anchor bolts
    F1554 Grade 105 Alloy, heat treated, high strength 105 ksi yield steel anchor bolts

    Mechanical Properties

    Grade Marking Size inches Tensile, ksi Yield, ksi min Yield, MPa min Elong. % min RA % min
    36 F1554 Grade 36 1⁄4 - 4 58 - 80 36 248 23 40
    55 F1554 Grade 55 1⁄4 - 2 75 - 95 55 380 21 30
    21⁄4 - 21⁄2 75 - 95 55 380 21 22
    23⁄4 - 3 75 - 95 55 380 21 20
    31⁄4 - 4 75 - 95 55 380 21 18
    105 F1554 Grade 105 1⁄4 - 3 125 - 150 105 724 15 45
    • Stamping of F1554 bolts with manufacturer's identification is a supplemental requirement (S2)
    • Color coding is required unless the grade is stamped in accordance with supplemental requirement (S3).
    • When Grade 36 is specified, a weldable Grade 55 may be furnished at the supplier's option.

    Chemical Properties

    Element Grade 36 Grades 55 and 105
    Sizes up to 3/4 Sizes over 3/4 to 1-1/2 Sizes over 1-1/2 to 4
    Carbon 0.26% 0.27% 0.28%  
    Manganese * 0.60 - 0.90% 0.60 - 0.90%  
    Phosphorus, max 0.04% 0.04% 0.04% 0.040%
    Sulfur, max 0.05% 0.05% 0.05% 0.050%
    Copper, min (when specified) 0.20% 0.20% 0.20% 0.20%
    * Optional with the manufacturer but shall be compatible with weldable steel

    Supplementary Testing

    Charpy impact testing can be requested as a supplementary requirement. Supplemental S4 designates impact testing at +40°F and is applicable to both grades 55 and 105. Supplemental S5 designates impact testing at -20°F and is applicable only to grade 105. In both cases the minimum v-notch energy requirement is an average of 15ft-lbs for three specimens, with no one specimen falling below 12ft-lbs.

    Recommended Nuts and Washers

    Grade Size inches Nuts Washer
    Plain Galvanized
    36 1⁄4 - 11⁄2 A563A Hex A563A Hex F436
    13⁄4 - 4 A563A Heavy Hex A563A Heavy Hex F436
    55 1⁄4 - 11⁄2 A563A Hex A563A Heavy Hex F436
    13⁄4 - 4 A563A Heavy Hex A563A Heavy Hex F436
    105 1⁄4 - 11⁄2 A563D Heavy Hex¹ A563DH Heavy Hex² F436
    13⁄4 - 3 A563DH Heavy Hex² A563DH Heavy Hex² F436
    1. A563-D rarely available, A563DH or A194-2H substituted.
    2. Per ASTM A563, A194-2H may be substituted for A563-DH.
     
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