Physical Metallurgy of Modern Creep-Resistant Steel for Steam Power Plants: Microstructure and Phase Transformations

Table 1

Comparison of the coefficient of thermal expansion (CTE) and thermal conductivity for ferritic and austenitic steel at 100°C. The compositions (wt%) of the steels are also given [2, 3].

(a)

Steel	CTE/	Thermal conductivity/
Ferritic	9.9	24.9
Austenitic	17.3	16.3

(b)

Steel	AISI type	C	Mn	P	S	Si	Cr	Ni
Ferritic	403	0.15	1.00	0.040	0.03	0.50	11.5–13.0	—
Austenitic	305	0.12	2.00	0.045	0.03	1.00	17–19	10.5–13.0