GB 10849-1989 Translated English of Chinese Standard. GB10849-1989: Cast aluminum-silicon alloy modificationhttps://www.chinesestandard.net, 30 nov. 2019 - 8 pages This standard specifies the classification principle and rating method for cast aluminum-silicon alloy modification. This standard applies to the evaluation of the metallographic structure of cast aluminum-silicon alloys that have undergone sodium modification and phosphorus modification. |