美国进口原版 ASTM E125 铸铁件缺陷磁痕的标准参考照片（四张）
ASTM E125 铸铁件缺陷磁痕的标准参考底片
Adjunct to E125 Reference Photographs for Magnetic Particle Indications on Ferrous Castings
These reference photographs are available on four large charts arranged for each type of discontinuity.
Plate 1 includes Linear Discontinuities
Plate 2 includes Shrinkage and Inclusions
Plate 3 includes Internal Chills and Unfused Chaplets, Porosity, and Welds
Plate 4 includes False Indications and Magnetic Anomalies.
In total, this includes 47 photographs, approximately 38 inches x 20 inches.