Apparatus for obtaining sample coupon for metallographic evaluation

摘要

An apparatus is provided for obtaining a sample coupon from a container of molten metal for the performance of metallographic microstructural evaluation. The apparatus comprises a housing formed of a material resistant to thermal breakdown, the housing having an exterior surface, a closed first end, and a second end including an opening sized and shaped for receiving and retaining a support member. The housing further includes an interior coupon chamber and a passageway extending between the coupon chamber and the exterior surface. The coupon chamber has at least one generally flat surface and a cross-sectional dimension of not less than seven square millimeters and not greater than 1,250 square millimeters.