Abstract: The influence of temperature on impact toughness of operational 12Kh1MF steel of steam superheater collector of TP-100 type boiler was investigated. It was established, that with the increase of temperature from 20 to 200 °C the impact toughness increases and in further reaches the plateau. Main dependencies of changes of steel microhardness along the thickness of collector pipe taking into consideration the distance from opening were revealed.Keywords: trdota, mikrotrdotaPublished in DKUM: 10.07.2015; Views: 753; Downloads: 25 Link to full text