Microstructure and Properties of Super-Ferritic Stainless Steels Used for Marine Construction after Fire Exposure

Table 1

The main element content and the structure of intermediate phases in SFSS(wt%) [25].

Phases	Structure	Fe	Cr	Mo	Ni	Nb	Si
σ-phase	Body-centered tetragonal	61.5	31.6	4.9	1.5	—	0.5
χ-phase	Cube	58.0	22.7	15.8	2.2	—	1.3
Laves phase	Hexagonal	53.6	20.2	10.8	3.8	10.1	1.5