For Q370R spherical tanks, what is the hardness after heat treatment, for the base material, the heat-affected zone, and the welds?

2024-09-03View Original

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For Q370R spherical tanks, what is the hardness after heat treatment, for the base material, the heat-affected zone, and the welds?

Reply #22024-09-03

The hardness of Q370R material after heat treatment of spherical tanks varies depending on the specific heat treatment process (such as normalizing, annealing, quenching, etc.) and the subsequent cooling method. Typically, the hardness of the base material is around 150-200 HB; the hardness in the heat-affected zone and the weld may be slightly higher, but the exact values depend on the welding process and heat treatment parameters. It is recommended to consult the specific material certificates or conduct hardness tests to obtain accurate data. .

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