Designation: A /A M – 95 (Reapproved ) An American National Standard. Standard Practice for. Steel Castings, Surface Acceptance Standards, . 6 Apr This standard is issued under the fixed designation A/AM; 1 This practice is under the jurisdiction of ASTM Committee A01 on Steel. ASTM A/AM: Standard Practice for Steel Castings, Surface Acceptance Standards, Visual Examination.
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The object of satm standard is to facilitate cooperation between founder and casting purchaser in determining the surface astm a802, and quality level required. Metal Removal Marks Astm a802 Dressing. The comparator can also be used as the standard of quality inspection.
It should assist in avoiding misunderstanding arising from imprecise descriptions at the order stage and should also help in astm a802 a surface that is amendable to a particular techniques of non-destructive testing.
Visual Inspection Acceptance Criteria.
ASTM A Surface Acceptance Standard for Steel Castings – Mookambika Metallurgical Solutions
Historical Version s – view previous versions of standard. Metal Removal Marks Mechanical Dressing. Metal Removal Marks Welds – indications of welds fully or partially removed by thermal or mechanical dressing.
Four levels of acceptance standards are provided. Metal Removal Marks Mechanical Dressing – surface remaining astm a802 using astm a802 mechanical means of dressing a cast surface or a previously thermally dressed surface.
Surface Texture – the natural surface of the casting after shot blasting. Fusion Discontinuities – surface irregularities giving a wrinkled appearance. This practice covers the standard acceptance criteria for the determination of surface texture, surface roughness, and astm a802 discontinuities of steel castings by visual examination.
Link to Active This link will always route to the current Active version of astm a802 standard. This abstract is a brief summary of the referenced standard. Gas Porosity – Indications of gas t the casing surface.
ASTM does not give any warranty express or a82 or make any representation that the contents of this abstract are accurate, complete or up to date. The use of the comparators is superior to methods based on photographs which can introduce uncertainties concerning interpretation, particularly with regards o the astm a802 of surface irregularities.
Inserts – indications of chaplets sand core supports or internal astm a802.
It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. The casting designer and purchasers can denote the level one to four on the drawings as the requirements of surface quality, then the founder, Astm a802 Foundry, will check astm a802 photos, and learn about the requirements.
Expansion Discontinuities – slightly raised surface irregularities.
Level A for surface texture, Level B astm a802 nonmetallic inclusions, Level C for gas porosity, Level D for solidification discontinuities, Level E astm a802 sand expansion discontinuities, Level F for metal inserts, Level G for thermally cut surfaces, Level H for mechanically prepared surfaces, and Level J for welded surfaces.
Non-Metallic Inclusions – Non-metallic material trapped on the surface of castings. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use astm a802 application.