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SA533 GrB CL1 and SA533 GrB CL2 steel plates properties and application

Heat treatment of SA533 GrB CL1 and SA533 GrB CL2 steel plates: the steel plates shall be subject to heat treatment, heated to a suitable temperature within the range of 1550-1800°F (845-980℃), and the holding time shall meet the requirements of uniform temperature on the whole plate thickness, and then quenched in water. The tempering shall then be carried out at a suitable temperature, but the tempering temperature shall not be lower than 1100 oF (595℃).

Chemical composition of SA533 GrB CL1 and SA533 GrB CL2 steel plates (smelting analysis %)
C: 0.25; Mn: 1.15-1.50; Mo: 0.45-0.60; Ni: 0.40-0.70; Si: 0.15-0.40; P: 0.012; S: 0.015; Cu: 0.10; V: 0.01

Mechanical properties of SA533 GrB CL2 steel plates:
Yield strength: ≥485 Mpa
Tensile strength: 620-795 Mpa
Elongation: ≥ 16%

SA533 GrB CL1 steel plate is a quenched and tempered manganese molybdenum and manganese molybdenum nickel alloy steel plate for pressure vessels. SA533 GrB CL1 steel plate is one of the main materials used in nuclear power industry and is widely used in BWR and pressure reactor. SA533 GrB CL2 steel plate is nuclear power vessel steel plate, which is quenched+tempered Mn Mo and Mn Mo Ni alloy steel plate.

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