POSCO Holdings Inc.
STEEL FOR PRESSURE VESSELS WITH EXCELLENT RESISTANCE TO HIGH-TEMPERATURE TEMPERING HEAT TREATMENT AND POST-WELD HEAT TREATMENT AND MANUFACTURING METHOD THEREFOR

Abstract:

The present invention relates to steel for pressure vessels used in a boiler, a pressure vessel fittings, etc. of a power station and, more particularly, to steel for pressure vessels with excellent resistance to high-temperature tempering heat treatment and post-weld heat treatment; and a manufacturing method therefor.