NB/T 20008.12-2010 Other material for pressurized water reactor nuclear power plants-Part 12: Forged or rolled bars for class 1,2,3 bolts and nuts (English Version)
This part specifies the technical requirements for the manufacturing, chemical composition, mechanical properties, non-destructive testing and other technical requirements for forged and rolled rods for bolts and nuts used in level 1, 2 and 3 equipment of pressurized water reactor nuclear power plants. This section applies to forged and rolled rods for grade 1, 2, and 3 bolts in pressurized water reactor nuclear power plants as follows:
——40CrMoV alloy steel (diameter not greater than 180 mm);
——12Crl3Ni (diameter not greater than 100 mm), 05Crl6Ni4Mo (diameter Not larger than 250 mm) martensitic stainless steel;
——06Cr19Nil0, 06Crl7Ni12Mo2, 05Crl9Ni10, 05Cr17Ni12Mo2 deformation work hardened austenitic stainless steel (not larger than 40 mm in diameter);
——12Crl2Ni3Mo2VN martensitic stainless steel (not larger than 250 mm in diameter, working temperature Not greater than 350℃);
——05Crl7Ni4Cu4Nb and 05Crl5Ni4Cu4Mo2 martensitic precipitation hardening stainless steel (diameter not greater than 200 mm);
——06Cr15Ni25Ti2MoAlVB austenitic precipitation hardening stainless steel. This section also applies to the following forged and rolled rods for grade 1, 2 and 3 bolts and nuts in pressurized water reactor nuclear power plants:
——45 carbon steel (diameter not greater than 100 mm);
——42CrMo alloy steel (diameter not greater than 180 mm);
——12Cr13 martensitic stainless steel (diameter not larger than 100 mm);
——06Crl9Nil0, 06Crl7Nil2Mo2, 05Cr19NilO and 05Cr17Nil2Mo2 austenitic solid solution stainless steel.
NB/T 20008.12-2010 history
2019NB/T 20008.12-2019 Other materials for pressurized water reactor nuclear power plants Part 12: Forged and rolled rods for bolts and nuts of grade 1, 2 and 3
2010NB/T 20008.12-2010 Other material for pressurized water reactor nuclear power plants-Part 12: Forged or rolled bars for class 1,2,3 bolts and nuts
2000EJ/T 1126-2000 Specification for safety - class. 2 bolting material used in pressure vessel for pressurized water reactor nuclear power plants
NB/T 20008.12-2010 Other material for pressurized water reactor nuclear power plants-Part 12: Forged or rolled bars for class 1,2,3 bolts and nuts has been changed from EJ/T 1126-2000 Specification for safety - class. 2 bolting material used in pressure vessel for pressurized water reactor nuclear power plants.