The cast martensitic stainless steel specified in this standard is based on mechanical properties as the main selection and acceptance basis. Its corrosion resistance is generally not used as an inspection item.
GB/T 6967-1986 history
2008GB/T 6967-2009 Martensitic stainless steel castings for general engineering application
1986GB/T 6967-1986 Medium and high strength stainless steel castings for engineering structure purposes