ASME PTB-8:2014 pdf download PROCUREMENT GUIDELINES FOR METALLIC MATERIALS
3 ASME ADOPTION OF MATERIAL SPECIFICATIONS ASME material specifications are those that are published in the BPVC Section II, Parts A, B and C. The majority of ASME material specifications are based on ASTM or AWS specifications. ASME ferrous material specifications are identified by the letters “SA” as the first characters in the specification number. For example, SA-106 refers to an ASME specification, whereas A106 refers to an ASTM specification. ASME nonferrous material specifications are identified by the letters “SB” as the first characters in the specification number. For example, SB-366 refers to an ASME material specification, whereas, B366 refers to an ASTM material specification. ASME welding rod, filler metal, and electrode material specifications are identified by the letters “SFA” as the first characters in the specification number.
For example, SFA-5.1/SFA-5.1M refers to an ASME specification, whereas, A5.1/A5.1M refers to an AWS welding material specification. As ASME adopts ASTM and other acceptable international material specifications for pressure vessel construction, the requirements in the ASME specification generally will be the same as those in the adopted ASTM or the acceptable international specification. However, some of the ASME material specifications include a statement underneath the title of the specification that lists the exceptions from the ASTM (or international) specification, or additional ASME requirements. Users should consult the appropriate specification to determine the differences between the ASME and the ASTM/AWS (or other international) specifications.
3.1 ASME Material Specifications In general, materials used for ASME BPVC construction are required to be ASME materials. The BPVC Section II, Part D, Tables 1A, 1B, 2A, 2B, C, 5A and 5B list all materials that may be used for ASME Code construction. Materials that have a temperature listed in the column titled “Applicability and Maximum Temperature Limits” may be used for ASME Code construction within the indicated temperature range for the applicable BPVC Section. Materials that have “NP” listed in this column may not be used for construction under that Section. Materials that are not listed in the BPVC Section II, Part D, may be used for ASME Code construction if permitted by an ASME Code Case. The materials used for ASME Code construction must be furnished in accordance with the specifications listed in BPVC, Section II.
The materials for Code use shall be ordered, produced, and documented in accordance with either the ASME specification in Section II (except as limited by the rules of the applicable construction code), or with an ASTM specification listed in Table II-200-1, or with a specification issued by other acceptable non-ASTM (international) specifications listed in Table II-200-2, or in a ASME Code Case for the construction code(s) listed in the ASME Code Case. The ASME SA material specifications include a statement under the title of the specification that identifies the related ASTM or the international material specification. Many ASME SA material specifications are identical with a particular edition of the same ASTM specification, in which case the ASME SA specification states that the ASME SA specification is identical with the ASTM or the international material specification, and lists the year date of the publication of that specification that is used for adoption of it as the ASME SA material specification. However, not all of the ASME SA material specifications are identical with the ASTM or the related international material specification. In such cases the statement under the title of the ASME SA specification also lists the exceptions, or modifications, or additional requirements to the adopted specification for use in ASME Code construction. For example, the ASME SA specification SA-335 adds hardness requirements for Grades P23 and P911 pipes. Another example is fusion welded pipes under specifications SA-671 and SA- 672 that include an additional statement that limit fabrication of such pipe for ASME Section III
ASME PTB-8:2014 pdf download
