Home>ASTM Standards>ASTM A827-14(R2018) pdf free download

ASTM A827-14(R2018) pdf free download

ASTM A827-14(R2018) pdf free download.Standard Speci fication for Plates, Carbon Steel, for Forging and Similar Applications
1. Scope
1.1 This specification covers carbon steel plates, forging quality, intended for forging, quenching-and-tempering, and similar applications in which uniformity of composition and freedom from injurious imperfections are important. 1.2 The plates are available in six grades, or chemical compositions. 1.3 When the steel is to be welded, it is presupposed that a welding procedure suitable for the grade of steel and intended use or service will be utilized. See Appendix X3 of Specifica- tion A6/A6M for information on weldability. 1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. 1.5 This international standard was developed in accor- dance with internationally recognized principles on standard- ization established in the Decision on Principles for the Development of International Standards, Guides and Recom- mendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
3. General Requirements and Ordering Information
3.1 Material furnished under this specification shall con- form to the requirements of the current edition of Specification A6/A6M, for the ordered material, unless a conflict exists in which case this specification shall prevail.
4. Materials and Manufacture
4.1 The steel shall be killed.
5. Chemical Composition
5.1 The heat analysis shall conform to the requirements for the applicable grade listed in Table 1.
6. Mechanical Property Requirements
6.1 The plates shall not be subject to mechanical property testing unless otherwise specified on the order.
7. Quality
7.1 General—The plates shall be free of injurious imperfec- tions and shall have a workmanlike finish. 7.2 Finish—The plates shall be furnished with a finish such as that produced by hot-rolling, except for ground areas resulting from conditioning operations, unless otherwise speci- fied on the order. 7.3 Surface Imperfections: 7.3.1 All injurious surface imperfections shall be removed by the material manufacturer or processor. Shallow imperfections shall be ground to sound metal; the ground area shall be well-faired and the thickness of the ground plate shall not be reduced below the minimum thickness permitted. All surface imperfections, the removal of which will reduce the plate thickness below the minimum permitted, shall be cause for rejection; however, such imperfections may be repaired by welding as provided in 7.5. 7.4 Edge Imperfections: 7.4.1 Laminar-type discontinuities 1 in. [25 mm] and less in length, and visible to the unaided eye on the edges of plates as prepared for shipment by the manufacturer or processor, are acceptable and do not require exploration. 7.4.2 All larger discontinuities shall be explored to deter- mine their depth and extent. Discontinuities shall be considered continuous when located in the same plane within 5 % of the plate thickness and when separated by a distance less than the length of the smaller of two adjacent discontinuities. 7.4.3 Indications visible to the unaided eye, on the cut edges of a plate as prepared for shipment by the manufacturer or processor shall not exceed the limits given in Columns 1 and 2 of Table 2. 7.4.4 Larger indications shall be removed by the manufac- turer or processor by grinding provided the resultant cavity does not exceed the limits given in Columns 3 and 4 of Table 2. 7.4.5 Indications of greater magnitude shall be cause for rejection; however, the defects may be removed and replaced with weld metal as provided in 7.5. 7.4.6 Indications on the edges of a plate cut during fabrica- tion shall be cause for rejection of the plate, at the discretion of the purchaser, when the magnitude exceeds the limits given in Columns 5 and 6 of Table 2. The defects may be removed and replaced with weld metal as provided in 7.5. 7.5 Repair by Welding: 7.5.1 Repairs shall be done by welders or welding operators meeting the qualification requirements of ASME Boiler and Pressure Vessel Code.

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