HB 20057-2011
Test methods for estimating grain size of superalloy investment castings (English Version)

Standard No.

HB 20057-2011

Language

Chinese, Available in English version

Release Date

2011

Published By

Professional Standard - Aviation

Latest

HB 20057-2011

Scope

This standard specifies the samples, evaluation methods, inspection results and judgments for grain size evaluation of high-temperature alloy equiaxed investment molded parts for aviation. This standard is applicable to the evaluation of the grain size of high-temperature alloy equiaxed investment castings for aviation.

HB 20057-2011 Referenced Document

• GB/T 13298 Inspection methods of microstructure for metals
• GB/T 6394-2002 Metal-methids for estimating the average grain size

HB 20057-2011 history

• 2011 HB 20057-2011 Test methods for estimating grain size of superalloy investment castings