tailieunhanh - Standard Specification for High-Strength Low-Alloy Structural Steel

"Standard Specification for High-Strength Low-Alloy Structural Steel" covers high-strength low-alloy structural steel shapes, plates, and bars for welded, riveted, or bolted construction intended primarily for use as structural members where savings in weight [mass] or added durability are important. The atmospheric corrosion resistance of the steel in most environments is substantially better than that of carbon structural steels with or without copper addition. When properly exposed to the atmosphere, this steel can be used bare (unpainted) for many applications. This specification is limited to material up to 4 in. [100 mm], inclusive, in thickness. | Designation A242 A242M 13 American Association State Highway and Transportation Officials Standard AASHTO No. M 161 Standard Specification for High-Strength Low-Alloy Structural Steel1 This standard is issued under the fixed designation A242 A242M the number immediately following the designation indicates the year of original adoption or in the case of revision the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon indicates an editorial change since the last revision or reapproval. This standard has been approved for use by agencies of the Department of Defense. 1. Scope 2. Referenced Documents This specification covers high-strength low-alloy struc- ASTM Standards 2 tural steel shapes plates and bars for welded riveted or bolted A6 A6M Specification for General Requirements for Rolled construction intended primarily for use as structural members Structural Steel Bars Plates Shapes and Sheet Piling where savings in weight mass or added durability are G101 Guide for Estimating the Atmospheric Corrosion Re- important. The atmospheric corrosion resistance of the steel in sistance of Low-Alloy Steels most environments is substantially better than that of carbon structural steels with or without copper addition. When prop- 3. General Requirements for Delivery erly exposed to the atmosphere this steel can be used bare Structural products furnished under this specification unpainted for many applications see Note 1 . This specifi- shall conform to the requirements of the current edition of cation is limited to material up to 4 in. 100 mm inclusive in Specification A6 A6M for the specific structural product thickness. ordered unless a conflict exists in which case this specification shall prevail. NOTE 1 For methods of estimating the atmospheric corrosion resis- tance of low-alloy steels see Guide G101. Coils are excluded from qualification to this specifica- When the steel is to be welded it is presupposed