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1.1 This specification covers deformed and plain stainless steel bars for concrete reinforcement used in applications requiring resistance to corrosion or controlled magnetic permeability. The standard sizes and dimensions of deformed bars and their numerical designation shall be those listed in . The text of this specification references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the specification.

1.1.1 Supplementary requirement (S1) of an optional nature is provided. It shall apply only when specified by the purchaser. In order to obtain a controlled magnetic permeability product, steel conforming to Supplementary Requirement S1 should be ordered.

1.2 The chemical composition of the stainless steel alloy shall be selected for suitability to the application involved by agreement between the manufacturer and the purchaser. This is an important consideration in achieving the desired corrosion resistance and/or controlled magnetic permeability.The alloys shown in have found the most use in North America. These and other stainless steel alloys specified in A 276 or other specifications are available for consideration in product selection. Consult with the steel manufacturer for stainless steel alloy availability.

1.3 Bars are generally of three minimum yield levels, namely, 40 000 [300 MPa], 60 000 [420 MPa], and 75 000 psi [520 MPa], designated as Grade 40 [300], Grade 60 [420], and Grade 75 [520], respectively.

1.4 Plain rounds in sizes up to and including 2 in. [50.8 mm] in diameter, when specified for dowels, spirals, structural ties, and supports, shall be furnished under this specification in Grade 40 [300], Grade 60 [420], and Grade 75 [520], respectively. Bending properties, when required, shall be by agreement between the manufacturer and purchaser. Requirements providing for deformations and marking shall not be applicable to plain bars.

1.5 Weldability of most stainless steel compositions is generally good, however, pre-weld or post-weld procedures, or both, are necessary. Where material is to be welded, a welding procedure suitable for the chemical composition and intended use or service shall be used. Retesting of physical properties should be considered following welding procedures depending upon the steel composition and welding operation involved. Note 1It is recommended that the user consult the manufacturer for information available from the Nickel Development Institute (NIDI) (Toronto, Canada).

1.6 This specification is applicable for orders in either inch-pound units (as Specification A 955) or in SI units (as Specification A 955M).

1.7 The values stated in either inch-pound or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard.

 

Document History

  1. ASTM A955/A955M-20c


    Standard Specification for Deformed and Plain Stainless Steel Bars for Concrete Reinforcement

    • Most Recent
  2. ASTM A955/A955M-20b


    Standard Specification for Deformed and Plain Stainless Steel Bars for Concrete Reinforcement

    • Historical Version
  3. ASTM A955/A955M-20a


    Standard Specification for Deformed and Plain Stainless Steel Bars for Concrete Reinforcement

    • Historical Version
  4. ASTM A955/A955M-20


    Standard Specification for Deformed and Plain Stainless Steel Bars for Concrete Reinforcement

    • Historical Version
  5. ASTM A955/A955M-19


    Standard Specification for Deformed and Plain Stainless Steel Bars for Concrete Reinforcement

    • Historical Version
  6. ASTM A955/A955M-18b


    Standard Specification for Deformed and Plain Stainless Steel Bars for Concrete Reinforcement

    • Historical Version
  7. ASTM A955/A955M-18a


    Standard Specification for Deformed and Plain Stainless Steel Bars for Concrete Reinforcement

    • Historical Version
  8. ASTM A955/A955M-18


    Standard Specification for Deformed and Plain Stainless Steel Bars for Concrete Reinforcement

    • Historical Version
  9. ASTM A955/A955M-17a


    Standard Specification for Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement

    • Historical Version
  10. ASTM A955/A955M-17


    Standard Specification for Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement

    • Historical Version
  11. ASTM A955/A955M-16a


    Standard Specification for Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement

    • Historical Version
  12. ASTM A955/A955M-16


    Standard Specification for Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement

    • Historical Version
  13. ASTM A955/A955M-15


    Standard Specification for Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement

    • Historical Version
  14. ASTM A955/A955M-14


    Standard Specification for Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement

    • Historical Version
  15. ASTM A955/A955M-12e1


    Standard Specification for Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement

    • Historical Version
  16. ASTM A955/A955M-12


    Standard Specification for Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement

    • Historical Version
  17. ASTM A955/A955M-11e1


    Standard Specification for Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement

    • Historical Version
  18. ASTM A955/A955M-11


    Standard Specification for Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement

    • Historical Version
  19. ASTM A955/A955M-10a


    Standard Specification for Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement

    • Historical Version
  20. ASTM A955/A955M-10


    Standard Specification for Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement

    • Historical Version
  21. ASTM A955/A955M-09b


    Standard Specification for Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement

    • Historical Version
  22. ASTM A955/A955M-09a


    Standard Specification for Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement

    • Historical Version
  23. ASTM A955/A955M-09


    Standard Specification for Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement

    • Historical Version
  24. ASTM A955/A955M-07a


    Standard Specification for Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement

    • Historical Version
  25. ASTM A955/A955M-07


    Standard Specification for Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement

    • Historical Version
  26. ASTM A955/A955M-06a


    Standard Specification for Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement

    • Historical Version
  27. ASTM A955/A955M-06


    Standard Specification for Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement

    • Historical Version
  28. ASTM A955/A955M-05a


    Standard Specification for Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement

    • Historical Version
  29. ASTM A955/A955M-05


    Standard Specification for Deformed and Plain Stainless Steel Bars for Concrete Reinforcement

    • Historical Version
  30. ASTM A955/A955M-04ae1


    Standard Specification for Deformed and Plain Stainless Steel Bars for Concrete Reinforcement

    • Historical Version
  31. ASTM A955/A955M-04a


    Standard Specification for Deformed and Plain Stainless Steel Bars for Concrete Reinforcement

    • Historical Version
  32. ASTM A955/A955M-04

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    Standard Specification for Deformed and Plain Stainless Steel Bars for Concrete Reinforcement

    • Historical Version
  33. ASTM A955/A955M-03b


    Standard Specification for Deformed and Plain Stainless Steel Bars for Concrete Reinforcement

    • Historical Version
  34. ASTM A955/A955M-03a


    Standard Specification for Deformed and Plain Stainless Steel Bars for Concrete Reinforcement

    • Historical Version
  35. ASTM A955/A955M-03


    Standard Specification for Deformed and Plain Stainless Steel Bars for Concrete Reinforcement

    • Historical Version
  36. ASTM A955/A955M-02


    Standard Specification for Deformed and Plain Stainless Steel Bars for Concrete Reinforcement

    • Historical Version
  37. ASTM A955/A955M-01


    Standard Specification for Deformed and Plain Stainless Steel Bars for Concrete Reinforcement

    • Historical Version