Sample material for a grade a steel plate, and asked to do non-metallic inclusions in the evaluation of grain size and microstructure observation. Nonmetallic inclusions in the sampling direction is vertical, grain size and microstructure of the sampling direction is horizontal.

As well as material for steel A level required to do a non-metallic inclusions, die rate and microstructure observations. Non-metallic inclusions in the samples to a vertical, die, and microstructure of sample orientation is horizontal.

Samples are made of grade a steel plate, grain of uncertainty and requirements of non-metallic inclusions, microstructure observation. Non-metallic inclusions in the sampling direction is vertical, grain size and microstructure of sample orientation to landscape.