Astm a488m

Solo disponible en BuenasTareas
  • Páginas : 32 (7807 palabras )
  • Descarga(s) : 9
  • Publicado : 18 de agosto de 2010
Leer documento completo
Vista previa del texto
Designation: A 488/A 488M – 01e1

An American National Standard

Standard Practice for

Steel Castings, Welding, Qualifications of Procedures and Personnel1
This standard is issued under the fixed designation A 488/A 488M; 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 parenthesesindicates the year of last reapproval. A superscript epsilon (e) indicates an editorial change since the last revision or reapproval. This standard has been approved for use by agencies of the Department of Defense.

e1 NOTE—A grade number in Category 5 of Table 1 was corrected editorially in October 2001.

1. Scope 1.1 This practice establishes the qualification of procedures, welders, andoperators for the fabrication and repair of steel castings by electric arc welding. 1.1.1 Qualifications of a procedure and either or both the operator or welder under Section IX of the ASME Boiler and Pressure Vessel Code shall automatically qualify the procedure and either or both the operator or welder under this practice. P-number designations in the ASME grouping of base metals for qualification maybe different than the category numbers listed in Table 1. Refer to Appendix X1 for a comparison of ASTM category numbers with the corresponding ASME P-Number designations. 1.2 Each manufacturer or contractor is responsible for the welding done by his organization and shall conduct the tests required to qualify his welding procedures, welders, and operators. 1.3 Each manufacturer or contractorshall maintain a record of welding procedure qualification tests (Fig. 1), welder or operator performance qualification tests (Fig. 2), and welding procedure specification (Fig. 3), which shall be made available to the purchaser’s representative on request. 1.4 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown inbrackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with this practice. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establishappropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

2. Referenced Documents 2.1 ASTM Standards: A 27/A 27M Specification for Steel Castings, Carbon, for General Application2 A 148/A 148M Specification for Steel Castings, High Strength, for Structural Purposes2 A 216/A 216M Specification for Steel Castings, Carbon, Suitable for Fusion Welding,for High-Temperature Service2 A 217/A 217M Specification for Steel Castings, Martensitic Stainless and Alloy, for Pressure-Containing Parts, Suitable for High-Temperature Service2 A 351/A 351M Specification for Castings, Austenitic, Austenitic–Ferritic (Duplex), for Pressure–Containing Parts2 A 352/A 352M Specification for Steel Castings, Ferritic and Martensitic, for Pressure-Containing Parts,Suitable for Low-Temperature Service2 A 356/A 356M Specification for Steel Castings, Carbon, Low Alloy, and Stainless Steel, Heavy-Walled for Steam Turbines2 A 370 Test Methods and Definitions for Mechanical Testing of Steel Products3 A 389/A 389M Specification for Steel Castings, Alloy, Specially Heat-Treated, for Pressure-Containing Parts, Suitable for High-Temperature Service2 A 447/A 447M Specificationfor Steel Castings, Chromium-Nickel-Iron Alloy (25-12 Class), for HighTemperature Service2 A 487/A 487M Specification for Steel Castings Suitable for Pressure Service2 A 494/A 494M Specification for Castings, Nickel and Nickel Alloy2 A 732/A 732M Specification for Castings, Investment, Carbon and Low Alloy Steel for General Application, and Cobalt Alloy for High Strength at Elevated Temperatures2 A...
tracking img