ASTM A802-19

Podrobné informácie

Označenie: ASTM A802-19

Dátum vydania: 01.09.2019

Stránok: 3

Krajina: Americká technická norma

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Anotácia

This practice covers the standard acceptance criteria for the determination of surface texture, surface roughness, and surface discontinuities of steel castings by visual examination. The acceptance levels utilize the Steel Castings Research and Trade Association (SCRATA) graded reference comparators described as follows: Level A for surface texture, Level B for nonmetallic inclusions, Level C for gas porosity, Level D for solidification discontinuities, Level E for 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.


Keywords:
steel castings, surface acceptance standards, visual,, ICS Number Code 77.140.80 (Iron and steel castings)