Metallurgy and characterisation of phase constituents of
experimental steels
The increasing demand for economic steels with higher toughness, better
weldability and less expensive alloying elements has resulted to modernTMCP steels. These materials are increasingly being used in the
design of offshore support structures. Some of the advance structural
steels are shown in Table 1(a) and conventional steels in
Table 1(b). The TMCP steel
grades have been manufactured specifically for offshore pipelines,
platforms, pressure vessels, and modern wind turbine installations
[21]. Currently they are replacing the more traditional ones in
Table 1(b). The BS4360 Grade 50D is equivalent to S355J2+N hot rolled
normalized steel.
Table 1: (a) Advanced S355 steel
subgrades for marine applications [22] (b) Conventional S355
structural steel grades [23][24][25][26]